compounds are noncyclic). There are a total of fve isomers:(b)The Eand Zisomers of 2-butenal are stereoisomers.(c)None of the C4H6O 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 Eand Zisomers of 2-butenal are formed by the aldol condensation of acetaldehyde.18.19The main Favor component of the hazelnut has the structure shown.18.20The characteristic reaction of an alcohol on being heated with KHSO4is acid-catalyzed dehydration.Secondary alcohols dehydrate faster than primary alcohols, and so a reasonable frst step isThe product of this dehydration is an enol, which tautomerizes to an aldehyde. The aldehyde then
This is the end of the preview. Sign up
access the rest of the document.
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.