申请人:Uniroyal Chemical Ltd./Ltee
公开号:US05654441A1
公开(公告)日:1997-08-05
A process for the production of a 1,3-oxathiolane sulfoxide of the formula ##STR1## wherein X is an amino group of the formula --NHR, wherein R is hydrogen, phenyl, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.6 cycloalkyl, nitrophenyl, (C.sub.1 -C.sub.4 alkoxy)phenyl, furfuryl, halophenyl, tolyl, napthyl, biphenyl or hydroxyphenyl; or X is an alkoxy group of the formula --OR.sup.1 wherein R is C.sub.1 -C.sub.6 alkyl, which process comprises oxidizing a 1,3-oxathiolane of the formula ##STR2## wherein X is as defined above, in the presence of an effective amount of aqueous hydrogen peroxide and a sterically-hindered organoselenium compound of the formula ##STR3## wherein R.sup.2 is aryl, mono-, di- or tri-substituted with C.sub.1 -C.sub.3 alkyl, to the produce the 1,3-oxathiolane sulfoxide. This process stereoselectively produces the cis stereoisomer of the 1,3-oxathiolane sulfoxide. Additionally, there is disclosed a novel method for the preparation of 5,6-dihydro-2-methyl-1,4-oxathiin compounds using this process.
一种用于生产1,3-氧硫环戊烷亚氧化物的过程,其分子式为##STR1##其中X是分子式--NHR的氨基团,其中R是氢、苯基、C.sub.1 -C.sub.8烷基、C.sub.3 -C.sub.6环烷基、硝基苯基、(C.sub.1 -C.sub.4烷氧基)苯基、呋喃基、卤代苯基、甲苯基、萘基、联苯基或羟基苯基;或X是分子式--OR.sup.1的烷氧基,其中R是C.sub.1 -C.sub.6烷基,该过程包括在有效量的水过氧化氢和一种具有立体位阻的有机硒化合物的存在下氧化分子式为##STR2##其中X如上定义的1,3-氧硫环戊烷,以产生1,3-氧硫环戊烷亚氧化物。该过程立体选择性地产生1,3-氧硫环戊烷亚氧化物的顺式异构体。此外,还公开了一种使用该过程制备5,6-二氢-2-甲基-1,4-氧硫环丙烷化合物的新方法。