Dolbier HW Solutions 345

Dolbier HW Solutions 345 - 439 ALDEHYDES AND KETONES...

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( h ) Cyclic acetal formation occurs when aldehydes react with ethylene glycol. ( i ) Aldehydes react with primary amines to yield imines. ( j ) Secondary amines combine with aldehydes to yield enamines. ( k ) Oximes are formed on reaction of hydroxylamine with aldehydes. ( l ) Hydrazine reacts with aldehydes to form hydrazones. ( m ) Hydrazone formation is the f rst step in the Wolff Kishner reduction (Section 12.8). ( n ) The reaction of an aldehyde with p -nitrophenylhydrazine is analogous to that with hydrazine. H 2 O 1 Propanal Propanal p -nitrophenylhydrazone CH 3 CH 2 CH NNH NO 2 CH 3 CH 2 CH O 1 p -Nitrophenylhydrazine O 2 N NHNH 2 CH 3 CH 2 CH NNH 2 Propanal hydrazone N 2 1 CH 3 CH 2 CH 3 Propane NaOH triethylene glycol, heat
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This note was uploaded on 09/28/2011 for the course CHM 2210 taught by Professor Reynolds during the Fall '01 term at University of Florida.

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