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.
一种通过α-羟基酮(酰塬)对1,2-二硫醇的作用制取下式的某些2,3-二氢-1,4-二硫醇的方法:其中R1和R2为氢或具有1至6个碳原子的烷基或连接在一起形成具有3或4个亚甲基的环,R3和R4为氢或具有1至10个碳原子的相同或不同的烷基,这些烷基可被低级烷氧基取代。