The carbon dioxide (CO2)-induced amidobromination of olefins with bromamine-T is described. The method can be used in reactions with a wide range of olefins, both aromatic and aliphatic, as well as electron-rich and deficient olefins, leading to the regioselective formation of amidobrominated compounds.
Stereoselective Lewis Acid Mediated (3+2) Cycloadditions of<i>N</i>-H- and<i>N</i>-Sulfonylaziridines with Heterocumulenes
作者:Robert A. Craig、Nicholas R. O'Connor、Alexander F. G. Goldberg、Brian M. Stoltz
DOI:10.1002/chem.201303699
日期:2014.4.14
Alkyl and arylisothiocyanates and carbodiimides are effective substrates in (3+2) cycloadditions with N‐sulfonyl‐2‐substituted aziridines and 2‐phenylaziridine for the synthesis of iminothiazolidines and iminoimidazolidines. Additionally, the stereoselective (3+2) cycloaddition of N‐H‐ and N‐sulfonylaziridines with isothiocyanates can be accomplished, allowing for the synthesis of highly enantioenriched