Preparation of N-alkyl pyrrolidinones via photocyclization of γ-keto-α,β-unsaturated amides
摘要:
Photolysis of gamma-keto-alpha,beta-unsaturated amides provides N-alkyl pyrrolidinones in high yield (77-100%). The procedure is applicable to a variety of amides derived from the corresponding gamma-keto acid.
Preparation of N-alkyl pyrrolidinones via photocyclization of γ-keto-α,β-unsaturated amides
摘要:
Photolysis of gamma-keto-alpha,beta-unsaturated amides provides N-alkyl pyrrolidinones in high yield (77-100%). The procedure is applicable to a variety of amides derived from the corresponding gamma-keto acid.
Enantioselective Pictet−Spengler-Type Cyclizations of Hydroxylactams: H-Bond Donor Catalysis by Anion Binding
作者:Izzat T. Raheem、Parvinder S. Thiara、Emily A. Peterson、Eric N. Jacobsen
DOI:10.1021/ja076179w
日期:2007.11.1
indolizinone and quinolizinone products are obtained in the thiourea-catalyzed cyclization of tryptamine-derived hydroxylactams. Substituent and counterion effect studies point to a novel mechanism of catalysis involving rate-limiting anion abstraction and binding by the thiourea.
Preparation of N-alkyl pyrrolidinones via photocyclization of γ-keto-α,β-unsaturated amides
作者:James P. Dittami、Feng Xu、Hua Qi、Matthew W. Martin、Jon Bordner、Debra L. Decosta、Jeffrey Kiplinger、Philip Reiche、Richard Ware
DOI:10.1016/0040-4039(95)00779-c
日期:1995.6
Photolysis of gamma-keto-alpha,beta-unsaturated amides provides N-alkyl pyrrolidinones in high yield (77-100%). The procedure is applicable to a variety of amides derived from the corresponding gamma-keto acid.