Unprecedented copper-catalyzed asymmetric conjugate addition of organometallic reagents to α,β-unsaturated lactams
作者:Mauro Pineschi、Federica Del Moro、Francesca Gini、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1039/b403793f
日期:——
For the first time, an excellent enantioselectivity has been obtained in the conjugateaddition of hard organometallic reagents to alpha,beta-unsaturated lactams bearing appropriate protecting-activating groups on the nitrogen.
Preparation and Epoxidation of Conjugated Lactams: Influence of Ring Size on Epoxidation
作者:Bing Li、Michael B. Smith
DOI:10.1080/00397919508012690
日期:1995.4
Abstract α,β-Epoxy-lactams can be prepared from conjugated lactams by treatment with m-chloroperoxybenzoic acid. Good yields are obtained, however, only with 2-pyrrolidinone derivatives. The yield of epoxy-lactam diminishes dramatically as the size of the lactamring increases.