Preparation of fused β-lactams through Weinreb amide α-anions
摘要:
Enantiomerically pure beta-lactams bearing a Weinreb amide functionality at the C3 position have been shown to be excellent substrates for alpha-alkylation reactions, generating C3 quaternary centers with predictable absolute stereochemistry. In addition, oxidative coupling of C3/C4 dianions affords entry to fused beta,gamma-bislactam systems. (C) 2014 Elsevier Ltd. All rights reserved.