[1+4] Cycloaddition of vinyl isocyanates with isocyanides. Construction of functionally elaborate pyrrolinone derivatives
作者:James H. Rigby、Maher Qabar、Gulzar Ahmed、Robert C. Hughes
DOI:10.1016/s0040-4020(01)80551-2
日期:1993.1
Reaction of alkyl isocyanides with vinyl isocyanates affords highly functionalized pyrrolinone and hydroindolone products via a novel [1+4] cyclization process.
Catalytic asymmetric addition reactions of enecarbamates with ethyl glyoxylate have been developed using CuClO4·4CH3CN and a diimine ligand as the catalyst. Highlydiastereo- and enantioselective addition reactions of α-mono-substituted enecarbamates have been also achieved. These reactions afforded the corresponding adducts with high selectivity; that is, syn adducts from Z-enecarbamates and anti
Bis(alkylthio)carbenes as Novel Reagents for Organic Synthesis
作者:James H. Rigby、Stephane Laurent、Weitong Dong、M.Diana Danca
DOI:10.1016/s0040-4020(00)00855-3
日期:2000.12
Bis(alkylthio)carbenes have been shown to be a useful class of reactive intermediates for applications to organic synthesis. Substituted hydroindolanes, isatins and hydroquinolones can be prepared by the addition of these carbenes to vinyl isocyanates. (C) 2000 Elsevier Science Ltd. All rights reserved.
Rigby, James H.; Qabar, Maher, Synthetic Communications, 1990, vol. 20, # 17, p. 2699 - 2709
作者:Rigby, James H.、Qabar, Maher
DOI:——
日期:——
Preparation of highly substituted 2-pyridones by reaction of vinyl isocyanates and enamines