Flashcards in Organic Chemistry Chapter 7: Aldehydes and ketones II Deck (13)
carbon adjacent to the carbonyl carbon
hydrogens attached to the alpha carbon
Are alpha hydrogens acidic?
yes -- can be removed by a strong base
What stabilizes the enolate?
resonance with the carbonyl
Why are ketones less reactive?
Steric hindrance and alpha-carbanion destabilization
What are the two forms that aldehydes and ketones exist in?
keto forms and enol forms
isomers that can be interconverted by moving a hydrogen and a double bond. The keto and the enol are tautomers to each other.
an enolate attacks an alpha-beta-unsaturated carbonyl creating a bond.
favored by fast, irreversible reactions at higher temperatures with weaker, smaller, bases.
tautomers of imines
the aldehyde or ketone acts as both nucleophilic and electrophilic, resulting in an aldol
contains both aldehyde and alcohol functional groups