β-lithiations of carboxamides. Synthesis of β-substituted-α,β-unsaturated amides
作者:Alan R. Katritzky、Maria Szajda、Jamshed N. Lam
DOI:10.1002/jhet.5570300515
日期:1993.10
aldehydes and ketones affords monosubstituted products; with ethyl p-toluate, a lactam is formed. The alkylated derivatives eliminate benzotriazole in the presence of base to afford trisubstituted α,β-unsaturatedamides.