Method of making certain 2,3-or 5,6-dihydro-1,4-dithiins
申请人:UNIROYAL LIMITED
公开号:EP0053494A1
公开(公告)日:1982-06-09
A method of making certain 2,3-dihydro-1,4-dithiins of the following formula by the action of alpha-hydroxyketones (acy- loins) on 1,2-dithiols:
wherein R1 and R2 are hydrogen or alkyl having 1 to 6 carbon atoms or are joined together to form a ring with 3 or 4 methylene groups, and R3 and R4 are hydrogen or the same or different alkyl groups having 1 to 10 carbon atoms, which alkyl groups may be substituted with lower alkoxy groups.
A method for synthesizing dihydro-1,4 dithiins by the reaction of an acyloin or a halocarbonyl compound with an organic thiosulfate is disclosed.
本发明公开了一种通过酰基化合物或卤代羰基化合物与有机硫代硫酸盐反应合成二氢-1,4-二硫鎓的方法。
US4319033A
申请人:——
公开号:US4319033A
公开(公告)日:1982-03-09
US4464538A
申请人:——
公开号:US4464538A
公开(公告)日:1984-08-07
Method of making certain 2,3-dihydro-1,4-dithiins
申请人:Uniroyal Ltd.
公开号:US04319033A1
公开(公告)日:1982-03-09
A method of making certain 2,3-dihydro-1,4-dithiins of the following formula by the action of alpha-hydroxyketones (acyloins) of 1,2-dithiols: ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or alkyl having 1 to 6 carbon atoms or are joined together to form a ring with 3 or 4 methylene groups, and R.sup.3 and R.sup.4 are hydrogen or the same or different alkyl groups having 1 to 10 carbon atoms, which alkyl groups may be substituted with lower alkoxy groups.