total synthesis enabled by cross-coupling的副本 · 2019. 10. 11. · why do people care about...

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Total Synthesis Enabled by Cross-Coupling Xiaheng Zhang MacMillan Group Meeting May 30 th ."2019 O O O BnO O OPMB H H H H H H OTBS O TfO O O O O O O O O OTBS Me H H H H H H H H H H H H H Me H H O O O O O O O O O OTBS Me H H H H H H H H H H H H H Me H H O O O OBn O PMBO H H H H H H TBSO H Pd

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  • Total Synthesis Enabled by Cross-Coupling

    Xiaheng ZhangMacMillan Group Meeting

    May 30th 2019

    O

    O OBnO

    O

    OPMB

    HH

    H

    H HH

    OTBS

    O

    TfO

    O

    OO

    OO

    O O

    O OTBS

    Me

    H

    HH

    HH

    H

    H

    H

    H

    HH

    HH

    Me

    H

    H

    OO

    O O

    O O

    OO

    OOTBS

    Me

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    Me

    H

    H

    O

    O

    O

    OBn

    O

    PMBO

    H

    H

    HH

    H

    H

    TBSO

    H

    Pd

  • Why Do People Care About Total Synthesis

    ■ invent, test and develop new methodology

    ■ produce bioactive molecules■ prepare analogs for drug discovery■ foundamental study cases for process chemistry

    Strychnine(Woodward, 1954)

    Erythronolide B(Corey, 1978)

    Taxol(Nicolaou, 1994)

  • Why Do People Care About Total Synthesis

    All new approved drugs 1981−2014■ S = Synthetic drug

    ■ More than 50% approved drugs are synthetic drugs

    Cragg, G. M.; Newman, D. J. J. Nat. Prod. 2016, 79, 629.

  • The Most Common Synthetic Tools in the Total Synthesis

    What’s next? Cross-Coupling Reaction

    Ph

    O

    Me

    H Ph

    O

    Aldol reactionPh

    O

    Me

    Ph

    OH

    R3MgBr

    Grignard reaction

    R1 R2

    O

    R1 R2

    OH

    R3

    Diels-Alder reaction Wittig reaction

    R1 R2

    O

    R1 R2Ph3PR3

    R4

    R4R3

  • Total Synthesis Enabled by Cross-Coupling

    Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Outline

    Pd

    Iron-Catalyzed Cross- Coupling in Total Synthesis

    Fe

    Copper-Catalyzed Cross-Coupling in Total Synthesis

    Cu

    Nickel-Catalyzed Cross- Coupling in Total Synthesis

    Ni

  • Total Synthesis Enabled by Cross-Coupling

    Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Outline

    Pd

  • Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Suzuki, Stille, Negishi reaction

    R1 R2YX R1 R2

    Pd

    X = ZnBr, B(OR)2, SnR3 Y = Cl, Br, I, OTf

    Heck reaction

    R4Y

    Pd

    Y = Cl, Br, I, OTf

    R2

    R1H

    R3

    R2

    R1R4

    R3

    Sonogashira reaction

    R2Y

    Pd

    Y = Cl, Br, I, OTfR1

    H

    R1

    R2

  • Sequential Heck Reactions in the Enantioselective Synthesis of Estrone

    L. F. Tietze, T. NVbel, M. Spescha, J. Am. Chem. Soc. 1998, 120, 8971.

    Pd(OAc)2, PPh3, 50%MeO

    BrBr

    Me

    H

    OtBu intermolecular Heck reactionMeO

    BrPdLn

    Me

    H

    OtBu

    Me

    H

    OtBu

    MeO

    Br

    Me

    H

    OtBu

    MeO

    H

    H H

    PPd

    O O

    PdOO P

    Me

    Me

    o-Tol o-Tol

    o-Tol o-Tol

    intramolecular Heck reaction99%

    Me

    H

    HO

    H

    H

    O

    estrone

  • Intramolecular Heck Reactions in the Total Synthesis of Dehydrotubifoline

    V. H. Rawal, C. Michoud, R. F. Monestel, J. Am. Chem. Soc. 1993, 115, 3030.

    N

    CO2MeH

    N

    Me

    N

    CO2MeH

    NI

    Me

    Pd(OAc)2, K2CO3, 84%

    N

    N

    Me

    PdLnO

    MeON

    NHMe

    PdLn

    CO2Me

    bond rotation

    N

    NMe

    CO2Me

    PdLn

  • Intramolecular Heck Reactions in the Total Synthesis of Dehydrotubifoline

    V. H. Rawal, C. Michoud, R. F. Monestel, J. Am. Chem. Soc. 1993, 115, 3030.

    NH H

    NI

    Me

    N

    N

    Me

    dehydrotubifoline

    Pd(OAc)2, K2CO3, 79%

    NH

    N

    Me

    PdLn

  • Intramolecular Heck Cascade for the Total Synthesis of Scopadulcic Acid B

    L. E. Overman, D. J. Ricca, V. D. Tran, J. Am. Chem. Soc. 1993, 115, 2042.

    Pd(OAc)2, PPh3

    Me

    OTBS

    IO

    O

    H

    OTBS

    PdLn

    Me

    1,2-insertion

    H

    OTBS

    Me

    PdLn

    β-hydride elimination

    H

    OTBS

    Me

    O

    O

    H

    OBz

    Me

    O

    HO2C

    HO

    H

    scopadulcic acid B

  • The Use of Heck Reaction in the Commercial Synthesis of Singulair

    Merck Team. J. Org. Chem. 1993, 58, 3731.Merck Team. J. Org. Chem. 1996, 61, 3398.

    Me MeOH

    NCl S

    CO2H

    Singulair, by Merck

    prevent asthma attacks

    intermolecular Heck

    NCl OH I

    CO2Me

  • The Use of Heck Reaction in the Commercial Synthesis of Singulair

    Merck Team. J. Org. Chem. 1993, 58, 3731.Merck Team. J. Org. Chem. 1996, 61, 3398.

    Singulair

    NCl OH

    I

    CO2Me

    CO2MeNCl OHPd(OAc)2, 83%

    HPdLn

    CO2MeNCl Oβ-hydride elimination

    tautomerization

  • ‘Stitching Cyclization’ Route to the Enediyene Core Synthesis

    M. D. Shair, T.-Y. Yoon, K. K. Mosny, T. C. Chou, S. J. Danishefsky, J. Am. Chem. Soc. 1996, 118, 9509.M. D. Shair, T.-Y. Yoon, S. J. Danishefsky, Angew. Chem. Int. Ed. 1995, 34, 1721.

    Pd(PPh3)4, 81%TeocN

    O

    Me

    OH

    OH

    II

    OTBS

    TeocNO

    Me

    OH

    OH

    OTBS

    Me3Sn SnMe3

    tandem Stille coupling

    HNO

    Me

    CO2H

    OMe

    OH

    OH

    OH O

    O

    (±)-dynemicin

    N

    Me

    OH

    OH

    II

    OTBS

    O

    MeO

  • Palladium-Catalyzed Cross-Coupling in the Total Synthesis of Chalcitrin

    Yang, M.; Yin, F.; Fujno, H.; Snyder, S. J. Am. Chem. Soc. 2019, 141, 4515.

    O

    O

    H

    OH

    O

    O

    O

    O

    CO2HHO2C

    HOOH

    OH

    HO

    chalcitrin

    O

    O

    H

    OH

    O

    O

    O

    O

    CO2BnBnO2C

    BnOOBn

    OBn

    BnO

    O

    O

    H

    OH

    O

    O

    CO2Bn

    OBn

    BnOPd

    O

    O

    CO2Bn

    OBn

    BnO

    I

    Heck reaction

  • Palladium-Catalyzed Cross-Coupling in the Total Synthesis of Chalcitrin

    Yang, M.; Yin, F.; Fujno, H.; Snyder, S. J. Am. Chem. Soc. 2019, 141, 4515.

    O

    O

    H

    OH

    O

    O

    H

    OH

    Me3Sn

    SnMe3

    O

    O

    O

    O

    CO2HHO2C

    HOOH

    OH

    HO

    chalcitrin

    O

    O

    H

    OH

    O

    O

    O

    O

    CO2BnBnO2C

    BnOOBn

    OBn

    BnO

    Pd

    O

    O

    CO2Bn

    OBn

    BnO

    I

    tandem Stille coupling

  • Palladium-Catalyzed Cross-Coupling in the Total Synthesis of Chalcitrin

    Yang, M.; Yin, F.; Fujno, H.; Snyder, S. J. Am. Chem. Soc. 2019, 141, 4515.

    O

    O

    H

    OH

    O

    O

    H

    OH

    I

    Br

    O

    O

    O

    O

    CO2HHO2C

    HOOH

    OH

    HO

    chalcitrin

    O

    O

    H

    OH

    O

    O

    O

    O

    CO2BnBnO2C

    BnOOBn

    OBn

    BnO

    Pd

    O

    O

    CO2Bn

    OBn

    BnO

    SnBu3

    tandem Stille coupling

    BBr3

    52% two steps

  • Carbopalladation/Stille Coupling Cascade for the Synthesis of Ileabethoxazole

    Yang, M.; Yang, X.; Sun, H.; Li, A. Angew. Chem., Int. Ed. 2016, 55, 2851.

    Pd(PPh3)4, 55%Me

    OTf

    MeO

    Si

    Me

    iPr iPrN

    O

    Bu3Sn

    TIPS

    Me

    Me OSi

    Me

    PdLn

    iPr

    iPr

    Me

    Me OSi

    MeiPr

    iPr

    NO

    TIPS

    6π-electrocyclizationaromatization

    Me

    Me

    NO

    TIPS

    Si

    Me

    OiPr

    iPr

    Me

    Me

    NO

    Me

    Me OHMe

    Ileabethoxazole

  • Suzuki-Miyaura Coupling in the Total Synthesis of Gymnocin A

    Tsukano, C.; Sasaki, M. J. Am. Chem. Soc. 2003, 125, 14294.

    O

    O OBnO

    O

    OPMB

    HH

    H

    H HH

    OTBS

    O

    TfO

    O

    OO

    OO

    O O

    O OTBS

    Me

    H

    HH

    HH

    H

    H

    H

    H

    HH

    HH

    Me

    H

    H

    OO

    O O

    O O

    OO

    OOTBS

    Me

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    H

    Me

    H

    H

    O

    O

    O

    OBn

    O

    PMBO

    H

    H

    HH

    H

    H

    TBSO

    H

    81%

    Pd(PPh3)4

  • Iterative Cross-Coupling in the Total Synthesis of Synechoxanthin

    Fujii, S.; Chang, S. Y.; Burke, M. D. Angew. Chem., Int. Ed. 2011, 50, 7862.

    Me

    Me

    HOOC

    MeMe

    Me Me Me

    Me

    COOH

    Synechoxanthin

    Me

    Me

    MeO2C

    I B

    Me

    BO

    OMe

    Me

    MeMe

    OO

    MeN

    OO

    IBr

    MIDA boronates

  • Iterative Cross-Coupling in the Total Synthesis of Synechoxanthin

    Fujii, S.; Chang, S. Y.; Burke, M. D. Angew. Chem., Int. Ed. 2011, 50, 7862.

    Me

    Me

    MeO2C

    I

    B

    Me

    BO

    OMe

    Me

    MeMe

    OO

    MeN

    OO

    MIDA boronates

    PdCl2dppf, K3PO470%

    B

    MeOO

    MeN

    OO

    Me

    Me

    MeO2C

    NaOMe, I2

    99%I

    Me

    Me

    Me

    MeO2C

    B

    MeOO

    MeN

    OO

    Me

    Me

    Me

    MeO2CPdCl2dppf, K3PO4

    65%

    MIDA boronates

  • Iterative Cross-Coupling in the Total Synthesis of Synechoxanthin

    Fujii, S.; Chang, S. Y.; Burke, M. D. Angew. Chem., Int. Ed. 2011, 50, 7862.

    Pd(OAc)2, XPhos, NaOH53% overallB

    MeOO

    MeN

    OO

    Me

    Me

    Me

    MeO2C

    IBr

    then deprotection

    Me

    Me

    HOOC

    MeMe

    Me Me Me

    Me

    COOH

    Synechoxanthin

    double cross-coupling

  • Palladium-Catalyzed Macrocyclization in Total Synthesis

    Zhu, X.; McAtee, C. C.; Schindler, C. S. Org. Lett. 2018, 20, 2862. Zhu, X.; McAtee, C. C.; Schindler, C. S. J. Am. Chem. Soc. 2019, 141, 3409.

    81%

    NBn

    N

    O

    O

    I I OBnMeO

    Pd(dppf)3CH2Cl2B2Pin2, DMSO/H2O

    NBn

    N

    O

    O

    BnOOMe

    NNH

    H

    H

    HO

    O

    herquline B

    MeMe

    NBn

    N

    O

    O

    Bin Bin OBnMeO

    Me

  • Palladium-Catalyzed Macrocyclization in Total Synthesis

    He, C.; Stratton, T. P.; Baran, P. S. J. Am. Chem. Soc. 2019, 141, 29.

    60%

    NH

    N

    O

    O

    I I OMeMeO

    Pd(dppf)3CH2Cl2B2Pin2, DMSO/H2O

    NH

    N

    O

    O

    MeOOMe

    NNH

    H

    H

    HO

    O

    herquline B

    MeMe

  • Palladium-Catalyzed Macrocyclization in Total Synthesis

    Cox, J. B.; Kimishima, Aoi.; Wood, J. L. J. Am. Chem. Soc. 2019, 141, 25.

    37%

    NH

    NH

    O

    O

    I I OHMeO

    Pd(dppf)3CH2Cl2B2Pin2, DMSO/H2O

    NH

    NH

    O

    O

    HOOMe

    NNH

    H

    H

    HO

    O

    herquline B

    BocBoc MeO

    MeO

  • Palladium-Catalyzed Carbonylation in the Total Synthesis

    Bai, Y.; Shen, X.; Li, Y.; Dai, M. J. Am. Chem. Soc. 2016, 138, 10838.

    OTBDPS

    H

    HI

    OOPMB

    Me

    OHMe

    OTBDPS

    H

    H

    OOPMB

    Me

    OHMe H

    PdLn

    Pd(OAc)2, P(2-furyl)3CO (3 atm)

    43%

    OTBDPS

    H

    H

    OOPMB

    Me

    OHMe H

    OLnPd

    OTBDPS

    H

    H

    OOPMB

    Me

    OMe H

    O

    Spinosyn A core structure

  • C-H Arylation in the Total Synthesis of Piperarborenine B

    Zaitsev, V. G.; Shabashov, D.; Daugulis, O. J. Am. Chem. Soc. 2005, 127, 13154.Gutekunst, W. R.; Baran, P. S. J. Am. Chem. Soc. 2011, 133, 19076.

    Gutekunst, W. R.; Gianatassio, R.; Baran, P. S. Angew. Chem., Int. Ed. 2012, 51, 7507.

    Pd(OAc)2, Ag2CO3, 52%O

    NH

    HMeO2C

    SMe OMe

    OMe

    OMe

    I

    O

    NH

    MeO2C

    SMe

    OMe

    OMeMeO

    O

    NH

    MeO2C

    SMe

    OMe

    OMeMeO

    LiOtBu79%

    Pd(OAc)2, 52%

    OMe

    OMe

    I

    O

    NH

    MeO2C

    SMe

    OMe

    OMeMeO

    MeOOMe

    3 steps

    O

    N

    OMe

    OMeMeO

    MeOOMe

    O

    N

    O

    O

    Piperarborenine B

  • C-H Arylation in the Total Synthesis of Podophyllotoxin

    Ting, C. P.; Maimone, T. J. Angew. Chem. Int. Ed. 2014, 53, 3115.

    Pd(OAc)2, Ag2CO3O

    O

    OTIPS

    CO2Me

    O

    NHArI

    OMe

    OMe

    OMe

    O

    O

    OTIPS

    CO2Me

    N ON

    30%

    O

    O

    OTIPS

    CO2Me

    LnPd N

    O

    N

    O

    O

    OH

    MeO

    OMe

    OMe

    O

    O

    H

    H

    Podophyllotoxin

  • C-H Arylation in the Total Synthesis of Podophyllotoxin

    Ting, C. P.; Maimone, T. J. Angew. Chem. Int. Ed. 2014, 53, 3115.

    Pd(OAc)2, K2CO3O

    O O

    NHI

    OMe

    OMe

    OMe

    O

    O

    OH

    MeO

    OMe

    OMe

    O

    O

    H

    H

    Podophyllotoxin

    OO

    Me Me

    SMe

    O

    O O

    NHDG

    OO

    Me Me

    MeO

    OMe

    OMe

    45% single diastereomer

  • C-H Alkenylation in the Total Synthesis of Psiguadial

    Chapman, L. M.; Beck, J. C.; Wu, L.; Reisman, S. E. J. Am. Chem. Soc. 2016, 138, 9803.

    Pd(OAc)2, Ag2CO3, 72%Me

    Me

    O

    NH N

    H

    Me

    Me

    O

    NH N

    O

    O

    O

    O

    I

    Me

    Me

    O

    Key structure of psiguadial

  • Decarboxylative Alkenylation in the Total Synthesis of (+)-Dihydro-β-erythroidine

    Clementson, S.; Jessing, M.; Pedersen, H.; Vital, P.; Kristensen, J. L. J. Am. Chem. Soc. 2019, ASAP

    [PdCl(allyl)]2, S-Phos, 110 oC

    (+)-Dihydro-β-erythroidine

    NTBSO

    TfO

    H

    MeO

    NTBSO

    H

    MeO

    NC

    NO

    H

    MeO

    OHCl, one pot

    KO

    O

    CN

    54% yield

  • Palladium-Catalyzed Decarboxylative Coupling of Cyanoacetate Salts with ArX

    Shang, R.; Ji, D.; Chu, L.; Fu, Y.; Liu, L. Angew. Chem. Int. Ed. 2011, 50, 4470.

    [PdCl(allyl)]2, S-Phos, 120 oC

    83% yield 82% yield 71% yield

    OTf

    85% yield

    CNKOOC CN

    CN

    OMe

    CN

    MeO2C

    MeMe

    CN

    Me

    ClCN

    F3C

  • Total Synthesis Enabled by Cross-Coupling

    Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Outline

    Pd

    Iron-Catalyzed Cross- Coupling in Total Synthesis

    Fe

    Copper-Catalyzed Cross-Coupling in Total Synthesis

    Cu

    Nickel-Catalyzed Cross- Coupling in Total Synthesis

    Ni

  • Iron-Catalyzed Cross-Coupling in Total Synthesis

    Kumada type coupling

    R ArXMgBr R Ar

    Fe

    R = alkyl X = Br, Cl, OTf, SPh, SO2R

  • Iron-Catalyzed Cross-Coupling in the Total Synthesis of (R)-(+)-muscopyridine

    Scheiper, B.; Glorius, F.; Leitner, A.; Furstner, A. Proc. Natl. Acad. Sci. U. S. A. 2004, 101, 11960.Furstner, A.; Leitner, A. Angew. Chem., Int. Ed. 2003, 42, 308.

    N OTfClBrMg

    Me

    Fe (5 mol%), 0 oC, 20 minNCl

    Me

    OFe

    N

    O

    N

    tBu

    tButBu

    tBu Cl

    BrMg

    Fe (5 mol%), 0 oC, 30 min

    N

    Me

    64% two steps

    N

    Me

    (R)-(+)-muscopyridine

  • Iron-Catalyzed bis-Methylation in the Total Synthesis of Cylindrocyclophane A

    K. C. Nicolaou, Y.-P. Sun, H. Korman, D. Sarlah, Angew. Chem., Int. Ed. 2010, 49, 5875.

    MeMgBr

    Fe(acac)3 (30 mol%), 0 oC

    OTf

    n-C4H9

    n-C4H9OTf

    MeO OMe

    OMeMeO

    H

    HMe

    n-C4H9

    n-C4H9Me

    MeO OMe

    OMeMeO

    H

    H

    80%

    Me

    n-C4H9

    n-C4H9Me

    HO OH

    OHHO

    H

    HHO

    OH

    Cylindrocyclophane A

  • Iron-Catalyzed Ring-Opening/Cross-Coupling in the Synthesis of Pateamine A

    Sun, C.-L.; Fürstner, A. Angew. Chem., Int. Ed. 2013, 52, 13071.Zhuo, C.-X.; Fürstner, A. Angew. Chem., Int. Ed. 2016, 55, 6051.Zhuo, C.-X.; Fürstner, A. J. Am. Chem. Soc. 2018, 140, 10514.

    MeMgBr

    Fe(acac)3

    64%

    N

    SOH

    OTBDPS

    OO

    O

    Me

    O

    N

    SOH

    OTBDPS

    OO

    CO2H

    Me Me

    N

    S

    O

    OO

    Me

    Me

    O

    R

    Pateamine A

    O O

    RMe

    FeLn

    proposed intermediate

  • Iron-Catalyzed Cyclopropylation in the Synthesis of Pharmaceutical Ingredient

    C. Risatti, K. J. Natalie, Z. Shi and D. A. Conlon, Org. Process Res. Dev. 2013, 17, 257.

    Fe(acac)3 (5 mol%), 0 oC

    96%

    MgBrN MeCl

    CF3

    N Me

    CF3

    N

    OF

    H Me

    N

    CF3

    Cl

    NK1/serotonin receptor antagonistBMS

  • Total Synthesis Enabled by Cross-Coupling

    Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Outline

    Pd

    Iron-Catalyzed Cross- Coupling in Total Synthesis

    Fe

    Copper-Catalyzed Cross-Coupling in Total Synthesis

    Cu

    Nickel-Catalyzed Cross- Coupling in Total Synthesis

    Ni

  • Copper-Catalyzed Cross-Coupling in Total Synthesis

    Copper catalysis C-X bond formation

    R NuHX R Nu

    Cu

    X = Cl

    Ullmann-type Coupling Chan-Lam-Evans-type Coupling

    X

    R3R2

    R1

    X B(OH)2

    R3R2

    R1

    B(OH)2

    N-nucleophileNH

    NH2

    O

    NH2

    NH

    O-nucleophile ROH ArOH RCOOH

    other-nucleophile RSH ArSH CF3 CN

  • Copper-Catalyzed Cross-Coupling in Total Synthesis

    Ma, D.; Zhang, Y.; Yao, J.; Wu, S.; Tao, F. J. Am. Chem. Soc. 1998, 120, 12459 Ma, D.; Xia, C.; Jiang, J.; Zhang, J. Org. Lett. 2001, 3, 2189;

    1) CuI, K2CO32) SOCl2

    martinellic acid

    I

    I CO2Me

    H2NOH

    72%

    CO2Me

    NH

    OH

    I

    NH

    N

    HO2C

    HN

    HN

    Me

    Me

    HN

    HN

    NH

    Me

    Me

  • Copper-Catalyzed Cross-Coupling in Total Synthesis

    Kanakis, A. A.; Sarli, V. Org. Lett. 2010, 12, 4872.

    OMe O

    N

    Br

    Ts O

    NH

    OMe

    Cu(OAc)2, DBU

    43%

    OMe O

    NTs

    O

    N

    OMe

    OH O

    HN

    O

    N

    OH

    Cl

    Cl

    Cl

    Cl

    Marinopyrrole A

  • Copper-Catalyzed Cross-Coupling in Total Synthesis

    Salih, M. Q.; Beaudry, C. M. Org. Lett. 2013, 15, 4540.

    CuI, proline, K3PO4

    Myricatomentogenin

    24%

    Br

    OMe

    Me

    O O

    OMe

    OH

    Me

    Me

    OMe

    Me

    O

    OMeO

    O

    Me Me

    BCl3, 44%

    HO

    O

    OHMeO

    O

  • Copper-Catalyzed Cross-Coupling in Total Synthesis of Peptides

    Li, H.; Tsu, C.; Blackburn, C.; Li, G.; Hales, P.; Dick, L.; Bogyo, M. J. Am. Chem. Soc. 2014, 136, 13562.

    BocNH

    HN

    NH

    O

    O

    O

    B

    HN

    Me

    OH

    Cu(OA)2, MeOH Et3N, rt Boc N

    H

    HN

    NH

    O

    O

    O

    O

    HN

    Me

    HCl

    H2N

    HN

    NH

    O

    O

    O

    O

    HN

    Me

  • Copper-Catalyzed Cross-Coupling in the Total Synthesis of Paliurine F

    M. Toumi, F. Couty and G. Evano, Angew. Chem., Int. Ed. 2007, 46, 572.

    NBoc

    OH

    OTBSOMe

    OI

    CuI, Phen, Cs2CO3

    75%

    OMe

    O

    NBoc

    O

    OTBS

    OMe

    NBoc

    O

    OI

    HN

    Me

    O

    NH2

    NH HNMe Me

    CuI

    70%

    OMe

    NBoc

    O

    O

    HN

    Me

    ONH

    Core structure of Paliurine F

  • Copper-Catalyzed Cross-Coupling in the Total Synthesis of Paliurine F

    M. Toumi, F. Couty and G. Evano, Angew. Chem., Int. Ed. 2007, 46, 572.

    OMe

    NBoc

    O

    OI

    HN

    Me

    O

    NH2

    NH HNMe Me

    CuI

    70%

    OMe

    NBoc

    O

    O

    HN

    Me

    ONH

    Core structure of Paliurine F

    OMe

    NBoc

    O

    O

    HN

    Me

    O

    NH221%

    OMe

    NBoc

    O

    O

    HN

    Me

    ONH

    Core structure of Paliurine F

    PdCl2, CuCl2

    aza-Wacker reaction

    Previous route

  • Copper-Catalyzed Cross-Coupling in the Synthesis of Nicergoline

    Moon, P. J.; Yin, S. K.; Lundgren, R. J. J. Am. Chem. Soc. 2016, 138, 13826.

    N

    Me

    NMe

    O

    O

    N

    BrH

    MeO

    Me

    N

    Me

    NMe

    O

    O

    N

    H

    MeO

    Me

    O

    OEt

    Nicergoline

    1) PdCl2MeCN2, dippf, B2(neop)2, 95%

    2) Cu(OTf)2, Et3N, 57%

    O

    OEtHOOC

    Copper-catalyzed decarboxylative C-C bond formation

  • Copper-Catalyzed Decarboxylative Arylation of Malonate

    Moon, P. J.; Yin, S. K.; Lundgren, R. J. J. Am. Chem. Soc. 2016, 138, 13826.

    Cu(OTf)2, Et3N, air, rt

    75% yield

    B(neop)2HOOC

    O

    OEt

    O

    OEt

    O

    OEt

    Ac

    67% yield

    NO

    OEt

    54% yield

    O

    OEt

    Br

    F

    68% yield

    O

    OEt

    NO2

    47% yield

    NO

    OEtBr

    Cl

    84% yield

    O

    NPh2

    I

    58% yield

    O

    Br

    N

    77% yield

    NO

    OEt

    F3C

  • Total Synthesis Enabled by Cross-Coupling

    Palladium-Catalyzed Cross-Coupling in Total Synthesis

    Outline

    Pd

    Iron-Catalyzed Cross- Coupling in Total Synthesis

    Fe

    Copper-Catalyzed Cross-Coupling in Total Synthesis

    Cu

    Nickel-Catalyzed Cross- Coupling in Total Synthesis

    Ni

  • Nickel-Catalyzed Cross-Coupling in Total Synthesis

    C-C bond formation

    R1 R2YX R1 R2

    Ni

    X = Br, I, B(OR)2, COOH Y = Cl, Br, I, OTf

    Nozaki-Hiyama-Kishi reaction

    NiX

    O

    R

    Cr

    R

    OH

  • Nickel-Catalyzed Cross-Coupling in Total Synthesis

    First Nickel-mediated reductive coupling—Farben, 1943

    Cl

    MeMe

    Me

    Ni(CO)4, MeOH, reflux, 80%

    I.G. Farben. Belgian Patent 448884. February 27, 1943; Chem. Abstr. 1947, 41, 6576.

    Corey, E. J.; Hamanaka, E. J. Am. Chem. Soc. 1964, 86, 1641.Corey, E. J.; Hamanaka, E. J. Am. Chem. Soc. 1967, 89, 2758.

    Br

    Me

    MeBr Me

    Me

    Ni(CO)4, NMPMe

    MeMe

    MeMe

    MeMe

    Me

    (PhS)2, hv

    Corey’s synthesis of Humulene

  • Nickel-Catalyzed Cross-Coupling in Total Synthesis

    First Nickel-mediated reductive coupling—Farben, 1943

    Cl

    MeMe

    Me

    Ni(CO)4, MeOH, reflux, 80%

    I.G. Farben. Belgian Patent 448884. February 27, 1943; Chem. Abstr. 1947, 41, 6576.

    Corey, E. J.; Semmelhack, M. F. J. Am. Chem. Soc. 1967, 89, 2755.

    Corey’s synthesis of epi-β-santalene

    Me

    I

    DMF, 90%

    NiBr2

    Me Me

    2

    Me

    Me

    Me

    epi-β-santalene

  • Nickel-Catalyzed Cross-Coupling in Total Synthesis

    Chen, W.-W.; Zhao, Q.; Xu, M.-H.; Lin, G.-Q. Org. Lett. 2010, 12, 1072.

    OMe

    MeO

    MeO

    Br O

    H

    NiCl2(PPh3)2, Bu4Ni, Zn

    67%, 68% ee

    OMe

    MeO

    MeO CHO

    MeO

    MeO

    OMe

    CHO

    O

    OP N N Ph

    MeO

    MeO

    MeOMeO

    MeO

    OMe

    OH

    Me

    isoschizandrin

  • Nickel-Catalyzed Cross-Coupling in Total Synthesis

    Watson, A. T.; Park, K.; Wiemer, D. F.; Scott, W. J. J. Org. Chem. 1995, 66, 5102.

    MeMe

    I

    Me

    H

    BrMg

    OMe

    OMe

    NiCl2(dppf) (20 mol%), 0 oC

    44%

    MeMe

    Me

    H

    MeO

    OMesp2-sp3 coupling

    MeMe

    Me

    H

    HO

    OH

    arenarol

  • Nozaki-Hiyama-Kishi Reaction in the Total Synthesis of Palytoxin

    Jin, H.; Uenishi, J.-I.; Christ, W. J.; Kishi, Y. J. Am. Chem. Soc. 1986, 108, 5644

    OO

    I

    Me

    MeMe

    Me OAc

    O

    OBn

    BnO OBnOAc

    H

    O

    MeO

    O

    OBn

    BnO OBnOAc

    OH

    MeO OO

    Me

    MeMe

    MeAcO

    86% yield

    NiCl2, CrCl3

  • Nozaki-Hiyama-Kishi Reaction in the Total Synthesis of Palytoxin

    Jin, H.; Uenishi, J.-I.; Christ, W. J.; Kishi, Y. J. Am. Chem. Soc. 1986, 108, 5644

    Ni(0)

    OO

    I

    Me

    MeMe

    Me OAc

    oxidative addition O ONiII

    Me

    MeMe

    Me OAc

    CrCl3

    OO

    CrIII

    Me

    MeMe

    Me OAc

    O

    OBn

    BnO OBnOAc

    H

    O

    MeO

    carbonyl addition

    transmetallation

    O

    OBn

    BnO OBnOAc

    OH

    MeO OO

    Me

    MeMe

    MeAcO

    86% yield

  • Nozaki-Hiyama-Kishi Reaction in the Total Synthesis of Eleutherobin

    Chen, X.-T.; Bhattacharya, S. K.; Zhou, B.; Gutteridge, C. E.; Pettus, T. R. R.; Danishefsky, S. J. J. Am. Chem. Soc. 1999, 121, 6563.

    NiCl2 (1.0 eq), CrCl3 (5.0 eq)TBDPSO

    O

    O

    H

    MeMe

    MeBr

    OTBDPS

    O

    OHMeMe

    Me

    74%

    O

    O

    MeMe

    Me

    OMeN

    N

    Me

    OMe

    O

    O

    OAc

    OH

    OH

    Eleutherobin

  • Nozaki-Hiyama-Kishi Reaction in the Total Synthesis of Chromodorolide

    Tao, D. J.; Stutskyy, Y.; Overman, L. E. J. J. Am. Chem. Soc. 2016, 138, 2186.

    NiCl2 (3 mol%)CrCl2 (100 mol%)

    66%, dr >20:1

    Me

    Me MeH

    I

    O

    O

    O

    Me

    Me

    H

    MeO2C

    OBn

    Me

    Me MeH

    O

    OHO Me

    Me

    MeO2COBn

    Core structure of chromodorolide

    N

    O

    MsHN

    Me

    MeMe

  • Nozaki-Hiyama-Kishi Allylation in Total Synthesis

    Zhu, L.; Tong, R. Org. Lett. 2015, 17, 1966.

    CrCl2 (20 eq)

    95%, single isomer

    OCO2Me

    Me

    TESO

    Me

    Me

    OAc

    Br

    OTBS

    CHO

    O

    Me

    TESO

    Me

    Me

    OAc

    OTBS

    HO

    CO2Me

    O

    Me

    OH

    Me

    Me

    OAc

    OTBSO

    O

    uprolide F

    Cr

    OR1

    R2

    Zimmerman-Traxlertransition state

  • Diastereoselective Allylation of Aldehydes

    Schwarz, J. L.; Schafë rs, F.; Tlahuext-Aca, A.; Lückemeier, L.; Glorius, F. J. Am. Chem. Soc. 2018, 140, 12705.

    95% yield, dr >19:1

    H

    OCr Ph

    OH

    homoallylic alcohol

    Ph

    OHOMe

    OMe

    CrCl2 (10 mol%)

    PhN

    OH

    85% yield, dr >19:1

    Ph

    PhNPh2

    OH

    90% yield, dr >19:1

    Ph

    NPh2

    OH

    56% yield, dr >19:1

    NPh2

    OH

    82% yield, dr >19:1

    NBoc

    NPh2

    OH

    86% yield, dr >19:1

    I

  • Nickel-Catalyzed Alkyne-Aldehyde Reductive Coupling in Total Synthesis

    Colby, E. A.; O’Brien, K. C.; Jamison, T. F. J. Am. Chem. Soc. 2004, 126, 998Colby, E. A.; O’Brien, K. C.; Jamison, T. F. J. Am. Chem. Soc. 2005, 127, 4297

    O

    *O

    O

    O

    Me

    HO

    Me

    Me

    Me

    amphidinolide T1

    Ph

    MeR H

    O Ni(cod)2 (5 mol%), Bu3P (20 mol%)Et3B 2.0 eq, rt Ph Ph

    Me

    OH

    Ph

    MeNi(cod)2 (5 mol%), Bu3P (20 mol%)

    Et3B 2.0 eq, rt PhMe

    O ROH

    R

  • Decarboxylative Coupling via Nickel Catalysis in Total Synthesis

    Merchant, R. R.; Oberg, K. M.; Lin, Y.; Novak, A. J. E.; Felding, J.; Baran, P. S J. Am. Chem. Soc. 2018, 140, 7462.

    CO2Me

    Me

    O

    Me

    OTES

    O

    CO2Me

    Me

    O

    Me

    COOHHH

    1) PPTS2) TPAP, NMO 1) DIC, TCNHPI

    ClZnMe

    MeNi

    CO2Me

    Me

    O

    Me

    HH

    OTES

    Me

    Me

    2)

    3) TiCl2, PdCl2, Zn, CH2I2

    28% (5 steps)

    Me

    O

    Me

    HH

    Me

    MeO

    O

    MeMe

    OH

    subglutinol B

    4 steps

  • Decarboxylative Coupling via Nickel Catalysis in Total Synthesis

    Merchant, R. R.; Oberg, K. M.; Lin, Y.; Novak, A. J. E.; Felding, J.; Baran, P. S J. Am. Chem. Soc. 2018, 140, 7462.

    Me

    O

    Me1) DIC, TCNHPI

    ClZnMe

    MeNi

    OTES

    2)

    Me

    O

    Me

    Me

    Me

    O

    O

    MeMe

    OH

    higginsianin A

    HO

    COOH

    Me

    O

    MeOTES

    HO

    H

    Me

    Me

    dr 1.3:1single isomer

    H

    Me

    O

    Me

    HH

    Me

    MeO

    O

    MeMe

    OH

    subglutinol B

    42%

  • Decarboxylative Coupling via Nickel Catalysis in Total Synthesis

    Zhang, J.; Li, Z.; Zhuo, J.; Cui, Y.; Han, T.; Li, C. J. Am. Chem. Soc. 2019, 141, 8372.

    PhZnCl

    Me

    O

    O O

    O N

    O

    O OO

    Me

    H

    Ph

    Me

    TBSO OTBS OBn

    COOHMe

    HO OH O

    O

    O

    longirabdiol

    Ni or Fe

    Me

    O

    O

    Ph

    direct coupling

  • Decarboxylative Coupling via Nickel Catalysis in Total Synthesis

    Zhang, J.; Li, Z.; Zhuo, J.; Cui, Y.; Han, T.; Li, C. J. Am. Chem. Soc. 2019, 141, 8372.

    PhBr

    Me

    O

    O O

    O N

    O

    O OO

    Me

    H

    Ph

    Zn

    60% yield, dr 4.2:1

    Me

    TBSO OTBS OBn

    COOHMe

    HO OH O

    O

    O

    longirabdiol

    CuCl2 (5 mol%)

    PCy2

    Me2N

    DavePhos

    Me

    Br

    O

    OH (7 mol%)