Reduction of carbonly compounds to produce primary or secondary alcohols

Addition of cyanide ion to carbonyl compounds to produce cyanohydrins

Conversion of a carbonyl group into a dithioacetal. Then the dithioacetal is converted into a methylene group

Addition of primary amines to carbonyl compounds to produce imines

Addition of alcohol to carbonyl compound to produce acetals

Addition of Grignard reagents (or organolithium reagents) to carbonyl compounds to form alcohols

Reaction of carbonyls with phosphomium ylides to form alkenes (Wittig reaction)

Conversion of acid chlorides to aldehydes with lithium tri-t-butoxyalminumm hydride

Conversion of acid chlorides to ketones using lithium dialkylcuprates