An Effective Method for the Synthesis of 3,5-bis(halomethyl)-1,4-Oxaselenanes and their Derivatives
作者:V. A. Potapov、M. V. Musalov、E. V. Abramova、M. V. Musalova、Yu. Yu. Rusakov、S. V. Amosova
DOI:10.1007/s10593-014-1435-1
日期:2014.3
We report the first study of selenium dichloride and dibromide reactions with diallyl ether, aimed at the preparation of selenium-containing heterocyclic compounds. It was established that selenium dichloride reacted regio- and stereoselectively, giving cis-3,5-bis(chloromethyl)-1,4-oxaselenane in 70% yield. Selenium dibromide gave 3,5-bis(bromomethyl)-1,4-oxaselenane in 76% yield, as a mixture of
我们报道了二氯化硒和二溴化物与二烯丙基醚反应的第一项研究,旨在制备含硒杂环化合物。已经确定,二氯化硒区域和立体选择性地反应,以70%的产率得到顺式-3,5-双(氯甲基)-1,4-氧杂len烷。二溴化硒以顺式和反式非对映异构体的混合物形式产生3,5-双(溴甲基)-1,4-氧杂亚戊烯,产率为76%。所获得的化合物用于合成先前未知的1,4-氧杂环戊烷:3,5-双(甲氧基甲基)-,4,4-二溴-3,5-双(氯甲基)-和3,5-双- (溴甲基)-4,4-二氯-1,4-氧杂亚硒基。发现3,5-双(卤甲基)-1,4-氧杂硒烯的非对映异构体具有异常容易的异构化作用。