A novel strategy involving visible-light-induced functionalization of alkenes for the synthesis of substituted aziridines was developed. The readily prepared N-protected 1-aminopyridinium salts were used for the generation of N-centered radicals. This approach allowed the synthesis of aziridines bearing various functional groups with excellent diastereoselectivity under mild conditions. Moreover, this
Reaction of 2,3-disubstituted-N-arylsulfonylaziridines with isocyanates in presence of sodium iodide - stereospecific conversion of N-arylsulfonylaziridines to imidazolidinones
作者:Upender K. Nadir、Nupur Basu
DOI:10.1016/s0040-4020(01)87252-5
日期:1993.8
The reaction of 2,3-disubstituted arylsulfonylaziridines with isocyanates in presence of sodium iodide yielding 4,5-disubstituted-2-imidazolidinones is somewhat specific rather than a general reaction, but whenever the reaction occurs, it does so in a totally stereospecific manner where imidazolidinones produced have the same geometric configuration as that of the starting aziridines. The yield of
Nadir, Upender K.; Sharma, Ms. Raman L.; Koul, Veerinder K., Journal of the Chemical Society. Perkin transactions I, 1991, # 8, p. 2015 - 2020
作者:Nadir, Upender K.、Sharma, Ms. Raman L.、Koul, Veerinder K.
DOI:——
日期:——
Reaction of N-arylsulfonylaziridines with dimethylsulfoniumethoxycarbonyl methylide: regio- and stereo-selective synthesis of 1-arylsulfonyl-2-ethoxycarbonyl azetidines
作者:Upender K. Nadir、Anjali Arora
DOI:10.1039/p19950002605
日期:——
Synthesis and characterization of 4-aryl-, 3,4-diaryl- and 3-alkyl-4-aryl-N-arylsulfonylazetidines, bearing a 2-ethoxycarbonyl group are described. The methodology used involves transfer of an ethoxycarbonyl substituted methylene group from dimethylsulfoniumethoxycarbonyl methylide to N-arylsulfonylaziridines. The synthesis is both regio- and stereo-selective.