Dolbier HW Solutions 383

Dolbier HW Solutions 383 - 477 ENOLS AND ENOLATES compounds...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
compounds are noncyclic). There are a total of f ve isomers: ( b ) The E and Z isomers of 2-butenal are stereoisomers. ( c ) None of the C 4 H 6 O aldehydes and ketones is chiral. ( d ) The a , b -unsaturated aldehydes are ( E )- and ; and . There is one a , b -unsaturated ketone in the group: . ( e ) The E and Z isomers of 2-butenal are formed by the aldol condensation of acetaldehyde. 18.19 The main F avor component of the hazelnut has the structure shown. 18.20 The characteristic reaction of an alcohol on being heated with KHSO 4 is acid-catalyzed dehydration. Secondary alcohols dehydrate faster than primary alcohols, and so a reasonable f rst step is The product of this dehydration is an enol, which tautomerizes to an aldehyde. The aldehyde then
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Ask a homework question - tutors are online