Terminal Aziridines by Addition of Grignard Reagents or Organoceriums to an (α-Chloro)sulfinylimine
作者:David Hodgson、Johannes Kloesges、Brian Evans
DOI:10.1055/s-0029-1216799
日期:2009.6
e with Grignard reagents or organoceriums gives terminal N-tert-butylsulfinyl aziridines in good yields and (mainly with organoceriums) good diastereomeric ratios. Oxidation of terminal N-tert-butylsulfinyl aziridines provides synthetically useful terminal N-Bus (Bus = tert-butylsulfonyl) aziridines. aziridines - chiral auxiliaries - imines - nucleophilic addition - organoceriums
Synthesis of Chiral Aziridines Through Decarboxylative Generation of Sulfur Ylides and Their Reaction with Chiral Sulfinyl Imines
作者:David C. Forbes、Sampada V. Bettigeri、Sejal R. Amin、Christie J. Bean、Amanda M. Law、Robert A. Stockman
DOI:10.1080/00397910802654898
日期:2009.6.9
Abstract Reaction of sulfurylides with a series of aryl substituted chiral nonracemic sulfinyl imines afforded the corresponding aziridines in good yields with good stereoselectivity. The sulfurylides were generated by the thermally induced decarboxylation of carboxymethylsulfonium betaines. A drop in the diastereomeric ratio was observed when going from electron-deficient to electron-releasing aryl