Reactions of alpha-ethoxycarbamates (alpha-ethoxylated derivatives of N-ethoxycarbonylpyrrolidine, -piperidine, and -hexamethyleneimine) with various enolates (enol acetates, enol ethers, or tin(II) enolates of ketones) in the presence of tin(II) triflate are described.
Trimethylsilyl Trifluoromethanesul Fonate (Tmsotf) Catalyzed Amidoalkylation of Silylenolethers. Stereocontrolled Syntheses of (+/-)-Sedamine and (+/-)-Norsedamine
作者:R. A. Pilli、L. C. Dias
DOI:10.1080/00397919108055456
日期:1991.11
The preparation of α-substituted, β-hydroxy piperidines and pyrrolidines: The total synthesis of febrifugine
作者:Laurence E. Burgess、Elizabeth K.M. Gross、Joe Jurka
DOI:10.1016/0040-4039(96)00527-8
日期:1996.5
Epoxides generated from cyclic ene carbamates are effective N-acyl iminium ion precursors and allow for the preparation of β-hydroxy, α-substitutedpiperidines and pyrrolidines. The total synthesis of racemic Febrifugine is also described.