Radical Redox-Relay Catalysis: Formal [3+2] Cycloaddition of <i>N</i>-Acylaziridines and Alkenes
作者:Wei Hao、Xiangyu Wu、James Z. Sun、Juno C. Siu、Samantha N. MacMillan、Song Lin
DOI:10.1021/jacs.7b06723
日期:2017.9.6
report Ti-catalyzed radical formal [3+2] cycloadditions of N-acylaziridines and alkenes. This method provides an efficient approach to the synthesis of pyrrolidines, structural units prevalent in bioactive compounds and organocatalysts, from readily available starting materials. The overall redox-neutral reaction was achieved via a redox-relay mechanism, which harnesses radical intermediates for selective
Thorpe–Ingold effect in the reaction of vicinal amino primary alcohol hydrogen sulfates and carbon disulfide
作者:Ning Chen、Zhongyan Huang、Chan Zhou、Jiaxi Xu
DOI:10.1016/j.tet.2011.08.023
日期:2011.10
rates and efficiency, as well as the structure of products in some ring-closure reactions. The reaction of vicinal amino primary alcohol hydrogen sulfates and carbon disulfide in the presence of potassium hydroxide produces the desired 4,4-disubstituted thiazolidine-2-thiones, and their isomers 5,5-disubstituted derivatives companying with their oxygen analogues 4,4-disubstituted oxazolidine-2-thiones