Aldehydes, Ketones and Carboxylic Acids
Preparation of Aldehydes and Ketones
Preparations :
(A) From Hydrocarbons :
(a) Wacker process :
(b) Ozonolysis :
c) Hydroboration Oxidation of alkyne :
(i) Aldehyde can not be prepared by using B2H6 / THF from terminal C ≡ C. For this purpose disiamyl borane is used.
d) From toluene :
1) Friedel - crafts Acylation does not take place in nitro benzene benzaldehyde and benzoic acid, in which the benzene ring has been highly deactivated.
2) Grignard reagent must be used in limited quantity, other wise the ketone formed will finally give 3° alcohol, the ketone has to be distilled out side by side
View the Topic in this Video from 3:45 to 43:35
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