Stepwise Formation of 1,3-Diazolium-4-thiolates by Münchnone Cycloadditions: Promising Candidates for Nonlinear Optics
作者:David Cantillo、Martín Ávalos、Reyes Babiano、Pedro Cintas、José L. Jiménez、Mark E. Light、Juan C. Palacios、Rocío Porro
DOI:10.1021/jo500349g
日期:2014.5.2
tes by [3 + 2] cycloadditions of münchnones with arylisothiocyanates is reported. The process takes place with high or complete regioselectivity, and fast and clean transformations are observed under microwave heating in DMF. DFT calculations support that this cycloaddition proceeds preferably through a stepwise mechanism. Given the pattern substitution around the mesoionic ring resulting in a push–pull