Synthesis of Isolable Thiirane 1-Imides and Their Stereospecific Ring-enlargement to 1,2-Thiazetidines
作者:Yoshiaki Sugihara、Yui Aoyama、Haruki Okada、Juzo Nakayama
DOI:10.1246/cl.2008.658
日期:2008.6.5
The isolation of thiirane 1-imides was achieved via imination of anti- and syn-9,9′-bibenzonorbornenylidene sulfides by Chloramine T at room temperature, followed by crystallization of the reaction mixture at −18 °C. Allowing CD2Cl2 solutions of the thiirane 1-imides stand at room temperature or heating their crystals to around 120 °C led to the formation of the corresponding 1,2-thiazetidines with retention of the configuration of the thiirane 1-imides.
通过在室温下用氯胺T进行反式和顺式9,9'-双苯并诺布尔烯腈硫化物的重氮化反应,成功隔离了噻吡喃1-亚胺,随后在-18°C下对反应混合物进行结晶。让噻吡喃1-亚胺的CD2Cl2溶液在室温下静置或将它们的晶体加热至约120°C,会导致相应的1,2-噻唑烷形成,同时保留噻吡喃1-亚胺的立体构型。