alcohols. complete combustion of alcohols ib chemistry sl cc23e83d555 oxidation reactions
TRANSCRIPT
Alcohols
Complete Combustion of Alcohols IB Chemistry SL
https://www.youtube.com/watch?v=8J9kif9KYuU&index=22&list=PL73D2BCC23E83D555
Oxidation reactions of alcoholshttps://www.youtube.com/watch?v=vZozMauc_-4&index=23&list=PL73D2BCC23E83D555
Oxidation of primary, secondary alcoholshttps://www.youtube.com/watch?v=iSc-Ypps_Io&index=24&list=PL73D2BCC23E83D555
Cr2O7-2 Cr+3
Breath Analyzer detects ethanol
Reactions of alcohols with carboxylic acids to form esters. State useshttps://www.youtube.com/watch?v=v9pHSiPVqng&index=37&list=PL73D2BCC23E83D555 Deduce structures of the polymers formed by alcohols and carboxylic acidshttps://www.youtube.com/watch?v=gNAqy4eAbMU&list=PL73D2BCC23E83D555&index=39
ESTERIFICATION = CONDENSATION
Ester
Nucleophilic addition - Formation of alcohols
The incoming nucleophile simply ‘pushes’ the electrons in the pi bond up to the oxygen.
The oxygen acts as a base, abstracting a proton from a nearby acid group in the solvent ex: H2O
Ketone Secondary alcohol
R
R
Carboxylic acids are REDUCED to primary alcohols
H- , H2O
CH3COOH + 2 [H] CH3CH2OH
Aldehydes are REDUCED to primary alcohols
H- , H2O
CH3CHO + 2 [H] CH3CH2OH
Ketones are REDUCED to secondary alcohols H- , H2O
CH3COCH3 + 2 [H] CH3CHOHCH3
Nucleophilic addition - Formation of alcohols with NaBH4 or LiAlH4
Nucleophilic addition - Formation of alcohols
You need to know :
The reducing agent (NaBH4 or LiAlH4) provides one H- which is nucleophilic while the solvent provides the second H
The mechanism with curly arrows is not required