Regioselective Formation of Tetrahydroselenophenes via 5-<i>exo</i>-<i>dig</i>-Cyclization of 1-Butylseleno-4-alkynes
作者:Rafaela M. Gai、Ricardo F. Schumacher、Davi F. Back、Gilson Zeni
DOI:10.1021/ol302919b
日期:2012.12.7
Results on the synthesis of tetrahydroselenophene derivatives from 1-butylseleno-4-alkynes by electrophilic cyclization using iodine as the electrophilic source are presented. This methodology was carried out via a simple process under mild reaction conditions providing the cyclized products in high yields. Electrophilic sources, such as PhSeBr, CuCl2, and CuBr2, were also used in this study. The
提出了使用碘作为亲电子源,通过亲电环化反应由1-丁基硒基-4-炔烃合成四氢硒化苯衍生物的结果。该方法通过简单的方法在温和的反应条件下进行,从而以高收率提供环化产物。这项研究中也使用了亲电源,例如PhSeBr,CuCl 2和CuBr 2。通过该方案获得的四氢硒代苯进行氰化,铃木和乌尔曼交叉偶联反应,以提供良好收率的交叉偶联产物。