A Reaction of Triazoles with Thioesters to Produce β‐Sulfanyl Enamides by Insertion of an Enamine Moiety into the Sulfur–Carbonyl Bond
作者:Tomoya Miura、Yoshikazu Fujimoto、Yuuta Funakoshi、Masahiro Murakami
DOI:10.1002/anie.201504013
日期:2015.8.17
in a stereoselective manner. The reaction proceeds through generation of an α‐imino rhodium carbene complex, nucleophilic addition of the sulfur atom of a thioester onto the carbenoid carbon atom, and subsequent intramolecular migration of the acyl group from the sulfur atom to the imino nitrogen atom. The method is successfully applied to a ring‐expansion reaction of thiolactones, thus leading to
在铑(II)催化剂存在下,N-磺酰基-1,2,3-三唑与硫酯反应,以立体选择性方式生成β-硫烷基酰胺。该反应通过生成α-亚氨基铑卡宾络合物,硫代酯的硫原子亲核加成到类碳原子上以及随后酰基从硫原子到亚氨基氮原子的分子内迁移而进行。该方法成功地用于硫代内酯的扩环反应,从而导致形成含硫内酰胺。