Stereoselective preparation of trifluoromethyl containing 1,4-oxathiolane derivatives through ring expansion reaction of 1,3-oxathiolanes
作者:Shifa Zhu、Chunhui Xing、Shizheng Zhu
DOI:10.1016/j.tet.2005.10.050
日期:2006.1
Trifluoromethyl containing 1,4-oxathiolanes are synthesized in excellent yields and high stereoselectivities from the expansion reactions of sulfur ylide intermediates, which were prepared from the reaction of 2-diazo-3,3,3-trifluoro-propionic acid methyl ester and 1,3-oxathiolanes in the presence of Rh2(OAc)4.
含有三氟甲基的1,4-氧杂硫杂环戊烷是由硫叶立德中间体的膨胀反应以高收率和高立体选择性合成的,后者是由2-重氮-3,3,3-三氟丙酸甲酯与1,在Rh 2(OAc)4存在下的3-氧杂硫杂环戊烷。