Stepwise Cycloadditions of Mesoionic Systems: Thionation of Thioisomünchnones by Isothiocyanates
作者:David Cantillo、Martín Ávalos、Reyes Babiano、Pedro Cintas、José L. Jiménez、Mark E. Light、Juan C. Palacios
DOI:10.1021/ol702929k
日期:2008.3.1
An unusual thionation strategy of mesoioniccompounds with aryl isothiocyanates enables a facile synthesis of 1,3-thiazolium-4-thiolate systems. The mechanistic pathway of such a transformation most likely involves a stepwise 1,3-dipolar cycloaddition, which is supported by theoretical calculations performed with a two-layer hybrid method (B3LYP/6-31G(d):PM3).