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Supporting Information
Aqueous Single Step Synthesis and Structural Characterization of Allylated, Propargylated, and Benzylated 3-Substituted 3-Aminooxindoles
Sameer A. Karpe, Man Singh*, and L. Raju Chowhan
School of Chemical Sciences, Central University of Gujarat, Gandhinagar, Gujarat - 382030,
India
Tel. No. 079-23260210, Fax No. 079-23260076E-mail address: [email protected], [email protected], and
1. General Information ………………………………………….………………..S2
2. Spectral Characterization Data……………………………………………..….S4
3. FTIR, NMR and Mass Spectral Data for compounds (1.5a-1.5o) …………….S15
S1
1. General information:
Isatin, 5-chloroisatin, alkyl halides, and ammonium chloride used were of analytical
grade obtained from Sigma-Aldrich and used without further purification. Isatin imine
derivatives were synthesized by following the method reported in literature[1] and
characterized with standard spectroscopic techniques to confirm the structures. All organic
solvents used were obtained from SD Fine Chemicals Ltd. (Mumbai, India). The Milli-Q-
water (Millipore SAS 67/20 Mosheim) of 10−7 S cm−1 was used for preparing an aqueous
saturated NH4Cl solution. Zinc dust of 90% purity was used. Reaction progress was
monitored by TLC (Merck, silica GF257) using ethyl acetate and n-hexane (4:6 v/v) as a
mobile phase and spots were visualized under UV light (RICO scientific industries, Model
RSUV-5). FTIR spectra were recorded on a Perkin-Elmer Spectrum FTIR spectrometer using
KBr plates, and characteristic wavenumbers are given in cm⁻1. Mass spectral analysis was
achieved on Agilent Technologies G6520B LCMS (QTOF) mass spectrometry with +ESI
ionization method. The 0.02% trifluoroacetic acid in water and pure acetonitrile was used as a
mobile phase in a ratio of 30:70% v/v, on an Agilent Zorbax 300 SB-C18 column (3.5 mm,
4.6 × 50 mm) with a flow rate of 0.5 mL min-1. The 1H and 13C NMR spectra were recorded at
room temperature (rt) in 5 mm tube using Bruker Avance III-500 MHz spectrometer in
deuterated chloroform (CDCl3) and deuterated dimethyl sulphoxide (DMSO-d6) with TMS as
an internal standard. The chemical shifts are given in δ ppm and coupling constant (J) in Hz.
Splitting patterns are described by singlet (s), doublet (d), triplet (t), quartet (q), quintet (q),
sextet (s), and multiplet (m).
1.1. General procedure for Synthesis of Isatin imines and its Derivatives
Aromatic amine (2.0 mmol) and isatin (2.0 mmol) were taken in a round bottom flask
containing 08 mL absolute ethanol. In this solution, a catalytic amount of glacial acetic acid
S2
was added at room temperature. The reaction mixture was refluxed for 3 to 5 hours. The
completion of the reaction was confirmed by TLC. Then the reaction mixture was allowed to
cool to room temperature. The solid product was filtered on a Buchner funnel. The crude
product was recrystallized from methanol.[1]
1.2. General procedure for Allylation, benzylation and propargylation of
Isatin imine and its Derivative
To a stirred solution of isatin imine (1.0 mmol) in THF (10 mL), saturated aqueous
NH4Cl (10 mL) and corresponding bromide 1.4a-h (2.0 mmol) were added successively. To
the resulting solution, Zn powder (2.0 mmol) was added portion wise at room temperature.
This mixture was stirred for 15 min. Then, the reaction mixture was transferred to the
separatory funnel. Two liquid layers were separated, and the aqueous layer was extracted
with 1:1 solution of EtOAc: THF (4 × 15 mL). Combined organic layers were washed with
brine (30 mL) and dried over anhydrous Na2SO4. After concentrating under vacuum, the
residue was purified by column chromatography on silica gel (n-hexane/ethyl acetate = 9/1 to
7/3). The final product was washed with 1:1 solution of diethyl ether: n-hexane (2 × 5 mL) to
yield pure solid. This procedure was followed for the synthesis of compounds 1.5a-1.5o.
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2. Spectral Characterization Data (1.5a-1.5o):
1.5a3-allyl-3-(4-bromophenylamino)indolin-2-one (1.5a): Yield: 63%; whitish brown
solid; IR (KBr) 3362 (secondary amine N-H stretch), 3239 (secondary amide N-H stretch),
3176-3083 (aromatic ring sp2 C-H stretch), 2978-2929 (alkane C-H stretch), 1724 (amide
C=O stretch), 1593 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.71 (s, 1H,
Ar-NHCO-), 7.24 (td, J = 6.31 and 1.26 Hz, 1H, Ar-H), 7.14 (d, J = 7.25 Hz, 1H, Ar-H),
7.09-7.05 (m, 2H, Ar-H), 6.97 (td, J = 6.94 and 0.95 Hz, 1H, Ar-H), 6.90 (d, J = 7.88 Hz, 1H
Ar-H), 6.56 (s, 1H, Ar-NH), 6.16-6.13 (m, 2H, Ar-H), 5.47-5.38 (m, 1H, C=C-H), 5.00-4.96
(m, 2H, C=CH2), 2.71-2.67 (m, 1H, C=C-CH2), 2.54-2.51 (m, 1H, C=C-CH2); 13C NMR (125
MHz, CDCl3-DMSO-d6) δ 176.54, 143.94, 139.44, 129.37, 128.97, 127.77, 127.02, 121.79,
120.09, 118.02, 113.59, 108.36, 106.23, 62.18, 41.98; LCMS m/z: calcd. for C17H15BrN2O:
342.04, found 343.0461 [M+H]+, 365.0281 [M+Na]+, 381.0025 [M+K]+.
1.5b3-(4-bromophenylamino)-3-(prop-2-ynyl)indolin-2-one (1.5b): Yield: 56%;
whitish brown solid; IR (KBr) 3346 (secondary amine N-H stretch), 3288 (terminal alkynes
≡C-H stretch), 3151 (secondary amide N-H stretch), 3090-3014 (aromatic ring sp2 C-H
stretch), 2963-2807 (alkane C-H stretch), 2124 (terminal alkynes C≡C stretch), 1720 (amide
S4
C=O stretch), 1595 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.83 (s, 1H,
Ar-NHCO-), 7.29-7.23 (m, 2H, Ar-H), 7.10-7.06 (m, 2H, Ar-H), 7.00-6.96 (m, 1H, Ar-H),
6.93 (d, J = 7.57 Hz, 1H), 6.65 (s, 1H, Ar-NH), 6.22-6.14 (m, 2H, Ar-H), 2.88 (dd, 2J = 13.24
and 4J = 2.52 Hz, 1H, C≡C-CH), 2.84 (t, J = 2.52 Hz, 1H, -C≡C-H), 2.71 (dd, 2J = 13.56 and
4J = 2.52 Hz, 1H, C≡C-CH); 13C NMR (125 MHz, CDCl3-DMSO-d6) δ 175.56, 143.54,
139.76, 129.26, 127.26, 126.99, 121.82, 120.03, 113.57, 108.22, 106.40, 91.80, 76.08, 60.94,
27.52; LCMS m/z: calcd. for C17H13BrN2O: 340.02, found 341.0307 [M+H]+, 343.0289
[M+2+H]+.
1.5c3-benzyl-3-(4-bromophenylamino)indolin-2-one (1.5c): Yield: 50%; white solid;
IR (KBr) 3375 (secondary amine N-H stretch), 3168 (secondary amide N-H stretch), 3088-
3028 (aromatic ring sp2 C-H stretch), 2947-2917 (alkane C-H stretch), 1716 (amide C=O
stretch), 1591 (amide N-H bend) cm-1; 1H NMR (500 MHz, CDCl3-DMSO-d6) δ 10.25 (s,
1H, Ar-NHCO-), 8.15 (s, 1H, Ar-NH), 7.14-7.05 (m, 2H, Ar-H), 7.06-6.98 (m, 4H, Ar-H),
6.95-6.93 (m, 1H, Ar-H), 6.79-6.75 (m, 2H, Ar-H), 6.62-6.59 (m, 1H, Ar-H), 6.55 (s, 1H, Ar-
H), 6.19 (d, J = 8.20 Hz, 2H, Ar-H), 3.25-3.17 (dd, J = 11.98 Hz, 2H, Ar-CH2-C); 13C NMR
(125 MHz, CDCl3-DMSO-d6) δ 176.37, 144.03, 139.73, 132.11, 129.46, 128.57, 127.36,
127.14, 125.67, 125.02, 122.21, 120.04, 113.95, 108.20, 106.50, 63.98, 43.75; LCMS m/z:
calcd. for C21H17BrN2O: 392.05, found 393.0615 [M+H]+, 395.0598 [M+2+H]+.
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1.5d3-(4-bromophenylamino)-3-(cyclohex-2-enyl)indolin-2-one (1.5d): Yield: 70%;
pale yellow solid; IR (KBr) 3337 (secondary amine N-H stretch), 3160 (secondary amide N-
H stretch), 3094-3033 (aromatic ring sp2 C-H stretch), 2937-2860 (alkane C-H stretch), 1708
(amide C=O stretch), 1598 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.73
(s, 1H, Ar-NHCO-), 7.25 (td, J = 6.62 and 0.95 Hz, 1H, Ar-H), 7.07-7.02 (m, 3H, Ar-H),
6.94-6.89 (m, 2H, Ar-H), 6.54 (s, 1H, Ar-NH), 6.20-6.15 (m, 2H, Ar-H), 6.02-5.98 (m, 1H, -
C-CH=CH-C), 5.86-5.82 (m, 1H, -C-CH=CH-C), 2.74 (br s, 1H, C=C-CH), 1.91-1.83 (m,
1H, C=C-CH), 1.72-1.60 (m, 2H, -CH2-), 1.56-1.50 (m, 1H, -CH2-), 1.40-1.31 (m, 1H, -
CH2-), 0.80-0.72 (m, 1H, -CH2-); 13C NMR (125 MHz, CDCl3-DMSO-d6) δ 176.80, 144.52,
140.24, 129.34, 128.43, 127.12, 126.44, 124.15, 123.04, 119.84, 113.99, 108.11, 106.37,
65.14, 42.03, 23.00, 21.06, 19.58; LCMS m/z: calcd. for C20H19BrN2O: 382.07, found
383.0779 [M+H]+, 385.0761 [M+2+H]+.
1.5e3-(4-bromophenylamino)-3-(2-methylbut-3-en-2-yl)indolin-2-one (1.5e): Yield:
80%; white solid; IR (KBr) 3313 (secondary amine N-H stretch), 3178 (secondary amide N-
H stretch), 3090 (aromatic ring sp2 C-H stretch), 2967-2810 (alkane C-H stretch), 1716
(amide C=O stretch), 1593 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.52
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(br s, 1H, Ar-NHCO-), 8.08 (br s, 1H, Ar-NH), 7.24-7.19 (m, 1H, Ar-H), 7.08 (d, J = 8.20
Hz, 1H, Ar-H), 7.00-6.86 (m, 3H, Ar-H), 6.26-6.12 (m, 3H, Ar-H), 5.22-5.11 (m, 3H, -
CH=CH2), 1.15 (s, 3H, -CH3), 1.09 (s, 3H, -CH3); 13C NMR (125 MHz, CDCl3-DMSO-d6) δ
176.24, 143.77, 140.74, 140.00, 129.32, 127.23, 126.23, 123.87, 119.40, 113.91, 113.16,
108.06, 106.56, 66.87, 41.47, 19.96, 18.59; LCMS m/z: calcd. for C19H19BrN2O: 370.07,
found 371.0780 [M+H]+.
1.5f3-(4-bromophenylamino)-3-(but-3-en-2-yl)indolin-2-one (1.5f): Yield: 60%; pale
yellow solid; IR (KBr) 3379 (secondary amine N-H stretch), 3167 (secondary amide N-H
stretch), 3089 (aromatic ring sp2 C-H stretch), 2995-2875 (alkane C-H stretch), 1721 (amide
C=O stretch), 1594 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.62 (br s,
1H, Ar-NHCO-), 8.20 (br s, 1H, Ar-NH), 7.15 (s, 1H, Ar-H), 7.05-6.85 (m, 4H, Ar-H), 6.16
(s, 2H, Ar-H), 6.09-5.88 (m, 1H, Ar-H), 5.43-5.32 (m, 1H, -C-CH=CH2), 5.22-5.12 (m, 1H,
C-CH=CH2), 5.08-4.94 (m, 1H, C-CH=CH2), 2.74 (br s, 1H, -CH-CH=CH2), 1.19 (br s, 3H, -
CH3); 13C NMR (125 MHz, CDCl3-DMSO-d6) δ 176.48, 143.99, 140.01, 135.32, 129.31,
127.17, 126.24, 122.60, 119.83, 115.50, 113.81, 108.24, 106.29, 64.98, 44.15, 12.48; LCMS
m/z: calcd. for C18H17BrN2O: 356.05, found 357.0612 [M+H]+, 359.0594 [M+2+H]+.
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1.5gmethyl 4-(3-(4-bromophenylamino)-2-oxoindolin-3-yl)but-2-enoate (1.5g): Yield:
30%; pale yellow solid; IR (KBr) 3463 (secondary amine N-H stretch), 3374 (secondary
amide N-H stretch), 3226-3032 (aromatic ring sp2 C-H stretch), 2959-2853 (alkane C-H
stretch), 1708 (amide C=O stretch), 1620 (C=C conjugated to ester carbonyl), 1594 (amide
N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.77 (s, 1H, Ar-NHCO-), 7.94 (br s, 1H,
Ar-NH), 7.29-7.21 (m, 2H, Ar-H), 7.07 (d, J = 7.88 Hz, 1H, Ar-H), 6.96 (t, J = 7.88 Hz, 1H,
Ar-H), 6.88 (d, J = 6.62 Hz, 1H, Ar-H), 6.24-6.15 (m, 2H, Ar-H), 6.03 (m, 1H, Ar-H ), 5.79-
5.68 (m, 1H, -CO-CH=CH-), 5.24 (m, 1H, -CO-CH=CH-), 3.73 (br s, 3H, -COOCH3), 3.58
(d, J = 11.66 Hz, 2H, -CH=CH-CH2); 13C NMR (125 MHz, DMSO-d6) δ 192.48, 179.80,
176.18, 169.92, 141.71, 131.23, 129.80, 125.27, 121.79, 121.69, 116.36, 111.72, 110.12,
109.43, 64.95, 51.93, 30.72; LCMS m/z: calcd. for C19H17BrN2O3: 400.04, found 401.0523
[M+H]+, 403.0509 [M+2+H]+.
1.5h3-(4-bromophenylamino)-3-(1-phenylethyl)indolin-2-one (1.5h): Yield: 77%;
whitish brown solid; IR (KBr) 3333 (secondary amine N-H stretch), 3292 (secondary amide
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N-H stretch), 3152-3029 (aromatic ring sp2 C-H stretch), 2966-2818 (alkane C-H stretch),
1716 (amide C=O stretch), 1596 (amide N-H bend) cm-1; 1H NMR (500 MHz, CDCl3-
DMSO-d6) δ 10.06 (s, 1H, Ar-NHCO-), 8.23 (s, 1H, Ar-NH), 7.33 (d, J = 6.62 Hz, 1H, Ar-
H), 7.25 (t, J = 7.88 Hz, 1H, Ar-H), 7.13 (br s, 2H, Ar-H), 7.02 (m, 3H, Ar-H), 6.84 (t, J =
7.25 Hz, 1H, Ar-H), 6.73 (d, J = 8.51 Hz, 1H, Ar-H), 6.62 (t, J = 8.20 Hz, 2H, Ar-H), 6.19
(br s, 2H, Ar-H), 3.85 (br s, 1H, Ar-CH-C), 1.53 (d, J = 7.57 Hz, 3H, -CH3); 13C NMR (125
MHz, CDCl3-DMSO-d6) δ 176.68, 144.43, 140.38, 140.27, 138.01, 137.89, 129.33, 127.64,
127.15, 126.80, 126.10, 125.61, 125.59, 125.20, 114.30, 114.02, 108.27, 108.02, 106.36,
66.53, 65.65, 45.50, 44.84, 13.66, 12.61; LCMS m/z: calcd. for C22H19BrN2O: 406.07, found
407.0781 [M+H]+, 409.0763 [M+2+H]+.
1.5i3-allyl-3-(phenylamino)indolin-2-one (1.5i): Yield: 73%; whitish brown solid; IR
(KBr) 3314 (secondary amine N-H stretch), 3137 (secondary amide N-H stretch), 3082-3031
(aromatic ring sp2 C-H stretch), 2887-2825 (alkane C-H stretch), 1711 (amide C=O stretch),
1604 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.62 (br s, 1H, Ar-
NHCO-), 7.22 (t, J = 7.57 Hz, 1H, Ar-H), 7.13 (d, J = 7.25 Hz, 1H, Ar-H), 6.94 (t, J = 7.57
Hz, 1H, Ar-H), 6.89 (d, J = 2.52 Hz, 3H, Ar-H), 6.46 (t, J = 7.88 Hz, 1H, Ar-H), 6.24 (s, 1H,
Ar-NH), 6.19 (d, J = 7.57 Hz, 2H, Ar-H), 5.49-5.39 (m, 1H, -C=C-H), 5.00-4.95 (m, 2H, -
C=CH2 ), 2.72-2.65 (m, 1H, C=C-CH2), 2.54 (m, 1H, C=C-CH2); 13C NMR (125 MHz,
DMSO-d6) δ 178.53, 146.41, 141.14, 130.90, 130.05, 128.71, 128.60, 123.56, 121.82, 119.75,
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116.74, 113.24, 109.92, 63.80, 43.67; LCMS m/z: calcd. for C17H16N2O: 264.13, found
265.1356 [M+H]+, 287.1182 [M+Na]+, 303.0920 [M+K]+.
1.5j3-(phenylamino)-3-(prop-2-ynyl)indolin-2-one (1.5j): Yield: 70%; brown solid; IR
(KBr) 3344 (secondary amine N-H stretch), 3284 (terminal alkynes ≡C-H stretch), 3140
(secondary amide N-H stretch), 3086-3022 (aromatic ring sp2 C-H stretch), 2893-2815
(alkane C-H stretch), 2125 (terminal alkynes C≡C stretch), 1715 (amide C=O stretch), 1603
(amide N-H bend) cm-1; 1H NMR (500 MHz, CDCl3-DMSO-d6) δ 10.69 (s, 1H, Ar-NHCO-),
8.17 (s, 1H, Ar-NH), 7.30- 7.20 (m, 1H, Ar-H), 6.98-6.86 (m, 4H, Ar-H), 6.50 (t, J = 7.57
Hz, 1H, Ar-H), 6.24 (d, J = 7.88 Hz, 2H, Ar-H), 6.19 (s, 1H, Ar-H), 2.88 (d, J = 13.87 Hz,
1H, -C≡C-CH), 2.71 (d, J = 13.87 Hz, 1H, -C≡C-CH), 2.57 (s, 1H, -C≡C-H); 13C NMR (125
MHz, CDCl3-DMSO-d6) δ 176.26, 144.45, 140.00, 127.79, 127.28, 126.92, 122.02, 120.15,
115.58, 111.99, 108.35, 76.43, 71.49, 61.17, 27.94; LCMS m/z: calcd. for C17H14N2O:
262.11, found 263.1199 [M+H]+, 285.1023 [M+Na]+, 301.0760 [M+K]+.
1.5k
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3-benzyl-3-(phenylamino)indolin-2-one (1.5k): Yield: 61%; whitish brown solid;
IR (KBr) 3340 (secondary amine N-H stretch), 3136 (secondary amide N-H stretch), 3061-
3028 (aromatic ring sp2 C-H stretch), 2938-2823 (alkane C-H stretch), 1709 (amide C=O
stretch), 1603 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.32 (s, 1H, Ar-
NHCO-), 7.19 (d, J = 7.25 Hz, 1H, Ar-H), 7.17-7.09 (m, 2H, one proton of Ar-H and one
proton of Ar-NH), 7.06 (t, J = 7.25 Hz, 2H, Ar-H), 6.96 (t, J = 7.57 Hz, 1H, Ar-H), 6.91 (t, J
= 6.94 Hz, 2H, Ar-H), 6.77 (d, J = 6.94 Hz, 2H, Ar-H), 6.60 (d, J = 7.25 Hz, 1H, Ar-H), 6.48
(s, 2H, Ar-H), 6.24 (d, J = 8.20 Hz, 2H, Ar-H), 3.25 (d, J = 12.61 Hz, 1H, Ph-CH2-), 3.18 (d,
J = 12.61 Hz, 1H, Ph-CH2-); 13C NMR (125 MHz, DMSO-d6) δ 178.24, 146.47, 141.32,
133.91, 130.12, 129.51, 128.74, 128.59, 127.35, 126.68, 123.88, 121.59, 116.75, 113.44,
109.58, 65.47, 45.19; LCMS m/z: calcd. for C21H18N2O: 314.14, found 315.1520 [M+H]+,
337.1340 [M+Na]+, 353.1078 [M+K]+.
1.5l3-allyl-5-chloro-3-(phenylamino)indolin-2-one (1.5l): Yield: 60%; white solid; IR
(KBr) 3373 (secondary amine N-H stretch), 3254 (secondary amide N-H stretch), 3106-3014
(aromatic ring sp2 C-H stretch), 2943-2846 (alkane C-H stretch), 1731 (amide C=O stretch),
1603 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.69 (br s, 1H, Ar-
NHCO-), 8.14 (br s, 1H, Ar-NH), 7.21 (s, 1H, Ar-H), 7.12 (s, 1H, Ar-H), 6.91 (br s, 3H, Ar-
H), 6.52 (br s, 1H, Ar-H), 6.22 (d, J = 6.62 Hz, 2H, Ar-H), 5.59-5.47 (m, 1H, H2C=C-H),
5.03 (d, 3J = 12.61 Hz, 2H, H2C=C-H), 2.71 (br s, 1H, -C=C-CH2), 2.11 (s, 1H, -C=C-CH2);
13C NMR (125 MHz, CDCl3-DMSO-d6) δ 176.82, 144.46, 138.43, 130.70, 128.86, 127.11,
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126.91, 124.85, 122.01, 118.49, 115.72, 111.94, 109.78, 62.56, 42.21; LCMS m/z: calcd. for
C17H15ClN2O: 298.09, found 299.0969 [M+H]+.
1.5m5-chloro-3-(phenylamino)-3-(prop-2-ynyl)indolin-2-one (1.5m): Yield: 55%; pale
yellow solid; IR (KBr) 3377 (secondary amine N-H stretch), 3277 (terminal alkynes ≡C-H
stretch), 3138 (secondary amide N-H stretch), 3107 (aromatic ring sp2 C-H stretch), 2902-
2840 (alkane C-H stretch), 2121 (terminal alkynes C≡C stretch), 1731 (amide C=O stretch),
1604 (amide N-H bend) cm-1; 1H NMR (500 MHz, CDCl3-DMSO-d6) δ 10.87 (s, 1H, Ar-
NHCO-), 8.23 (s, 1H, Ar-NH), 7.28 (m, 1H, Ar-H), 6.93 (d, J = 7.25 Hz, 3H, Ar-H), 6.53 (t,
J = 7.57 Hz, 1H, Ar-H), 6.34 (br s, 1H, Ar-H), 6.23 (d, J = 7.57 Hz, 2H, Ar-H), 2.93 (d, J =
14.82 Hz, 1H, C≡C-CH), 2.70 (m, 2H, one proton of C≡C-CH, one proton of -C≡C-H); 13C
NMR (125 MHz, CDCl3-DMSO-d6) δ 175.74, 144.13, 138.88, 129.88, 127.19, 126.97,
124.46, 121.98, 115.68, 111.75, 109.63, 76.03, 71.88, 61.32, 27.55; LCMS m/z: calcd. for
C17H13ClN2O: 296.07, found 297.0810 [M+H]+.
1.5n
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3-benzyl-5-chloro-3-(phenylamino)indolin-2-one (1.5n): Yield: 27%; brown solid;
IR (KBr) 3345 (secondary amine N-H stretch), 3100 (secondary amide N-H stretch), 3024
(aromatic ring sp2 C-H stretch), 2889-2843 (alkane C-H stretch), 1708 (amide C=O stretch),
1601 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.49 (br s, 1H, Ar-
NHCO-), 7.22-7.17 (m, J = 7.25 Hz, 2H, Ar-H), 7.16-7.08 (m, 3H, Ar-H), 6.94 (t, J = 7.88
Hz, 2H, Ar-H), 6.82 (d, J = 6.31 Hz, 2H, Ar-H), 6.62 (d, J = 7.88 Hz, 1H, Ar-H), 6.55 (s,
1H, Ar-NH), 6.53-6.50 (m, 1H, Ar-H), 6.23 (d, J = 7.88 Hz, 2H, Ar-H), 3.31 (d, J = 12 Hz,
1H, Ph-CH2), 3.18 (d, J = 11.98 Hz, 1H, Ph-CH2); 13C NMR (125 MHz, DMSO-d6) δ 178.02,
146.22, 140.25, 133.63, 131.85, 130.13, 128.76, 128.66, 127.51, 126.88, 125.78, 123.98,
117.08, 113.39, 111.05, 65.74, 44.92; LCMS m/z: calcd. for C21H17ClN2O: 348.10, found
349.1128 [M+H]+, 371.0948 [M+Na]+.
1.5o3-allyl-3-(4-bromophenylamino)-5-chloroindolin-2-one (1.5o): Yield: 45%; white
solid; IR (KBr) 3379 (secondary amine N-H stretch), 3245 (secondary amide N-H stretch),
3078-3009 (aromatic ring sp2 C-H stretch), 2976-2855 (alkane C-H stretch), 1736 (amide
C=O stretch), 1596 (amide N-H bend) cm-1; 1H NMR (500 MHz, DMSO-d6) δ 10.72 (br s,
1H, Ar-NHCO-), 7.21 (s, 1H, Ar-H), 7.11 (s, 1H, Ar-H), 7.02 (s, 2H, Ar-H), 6.89 (s, 1H, Ar-
H), 6.36 (br s, 1H, Ar-NH), 6.17 (t, J = 3.47 Hz, 2H, Ar-H), 5.57-5.46 (m, 1H, H2C=CH-
CH2-), 5.08-4.99 (m, 2H, H2C=CH-CH2-), 2.71 (br s, 1H, H2C=CH-CH2-), 2.58 (br s, 1H,
H2C=CH-CH2-); 13C NMR (125 MHz, CDCl3-DMSO-d6) δ 176.54, 143.76, 138.43, 130.14,
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129.74, 128.71, 127.15, 125.10, 122.10, 118.69, 113.83, 109.95, 107.02, 62.66, 42.16;
LCMS m/z: calcd. for C17H14BrClN2O: 376.00, found 377.0069 [M+H]+.
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Product 1.5a
Figure S1. FTIR spectra of 1.5a
Figure S2. 1H NMR spectra of 1.5a
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Figure S3. 13C NMR spectra of 1.5a
Figure S4. Mass spectra of 1.5a
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M+K
M+Na
M+H1.5a
Product 1.5b
Figure S5. FTIR spectra of 1.5b
Figure S6. 1H NMR spectra of 1.5b
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Figure S7. 13C NMR spectra of 1.5b
Figure S8. Mass spectra of 1.5b
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M+H
1.5b
Product 1.5c
Figure S9. FTIR spectra of 1.5c
Figure S10. 1H NMR spectra of 1.5c
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Figure S11. 13C NMR spectra of 1.5c
Figure S12. Mass spectra of 1.5c
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1.5c
M+H
Product 1.5d
Figure S13. FTIR spectra of 1.5d
Figure S14. 1H NMR spectra of 1.5d
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Figure S15. 13C NMR spectra of 1.5d
Figure S16. Mass spectra of 1.5d
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M+H
1.5d
Product 1.5e
Figure S17. FTIR spectra of 1.5e
Figure S18. 1H NMR spectra of 1.5e
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Figure S19. 13C NMR spectra of 1.5e
Figure S20. Mass spectra of 1.5e
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M+H 1.5e
Product 1.5f
Figure S21. FTIR spectra of 1.5f
Figure S22. 1H NMR spectra of 1.5f
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Figure S23. 13C NMR spectra of 1.5f
Figure S24. Mass spectra of 1.5f
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M+H
1.5f
Product 1.5g
Figure S25. FTIR spectra of 1.5g
Figure S26. 1H NMR spectra of 1.5g
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Figure S27. 13C NMR spectra of 1.5g
Figure S28. Mass spectra of 1.5g
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M+H
1.5g
Product 1.5h
Figure S29. FTIR spectra of 1.5h
Figure S30. 1H NMR spectra of 1.5h
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Figure S31. 13C NMR spectra of 2.5h
Figure S32. Mass spectra of 1.5h
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M+H
1.5h
Product 1.5i
Figure S33. FTIR spectra of 1.5i
Figure S34. 1H NMR spectra of 1.5i
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Figure S35. 13C NMR spectra of 1.5i
Figure S36. Mass spectra of 1.5i
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1.5i
M+K
M+Na
M+H
Product 1.5j
Figure S37. FTIR spectra of 1.5j
Figure S38. 1H NMR spectra of 1.5j
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Figure S39. 13C NMR spectra of 1.5j
Figure S40. Mass spectra of 1.5j
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M+K
M+Na
M+H
1.5j
Product 1.5k
Figure S41. FTIR spectra of 1.5k
Figure S42. 1H NMR spectra of 1.5k
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Figure S43. 13C NMR spectra of 1.5k
Figure S44. Mass spectra of 1.5k
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M+K
M+Na
M+H
1.5k
Product 1.5l
Figure S45. FTIR spectra of 1.5l
Figure S46. 1H NMR spectra of 1.5l
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Figure S47. 13C NMR spectra of 1.5l
Figure S48. Mass spectra of 1.5l
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M+1
1.5l
Product 1.5m
Figure S49. FTIR spectra of 1.5m
Figure S50. 1H NMR spectra of 1.5m
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Figure S51. 13C NMR spectra of 1.5m
Figure S52. Mass spectra of 1.5m
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M+H
1.5m
Product 1.5n
Figure S53. FTIR spectra of 1.5n
Figure S54. 1H NMR spectra of 1.5n
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Figure S55. 13C NMR spectra of 1.5n
Figure S56. Mass spectra of 1.5n
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M+Na
2.5n
M+H
Product 1.5o
Figure S57. FTIR spectra of 1.5o
Figure S58. 1H NMR spectra of 1.5o
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Figure S59. 13C NMR spectra of 1.5o
Figure S60. Mass spectra of 1.5o
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M+H
1.5o
References
[1] Verma, M.; Pandeya, S. N.; Singh, K. N.; Stables, J. P. Acta Pharm. 2004, 54, 49-56.
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