申请人:SUMITOMO CHEMICAL COMPANY LIMITED
公开号:EP0841323A2
公开(公告)日:1998-05-13
There is provided a method for producing arylvinylsulfone of the formula:
wherein, R1 and R2 denote each independently a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a nitro group, an amino group, a lower alkylamino group and a lower di(alkylamino) group,
which comprises reacting β-haloethylarylsulfone of the formula:
wherein, R1 and R2 are as defined above and X denotes a halogen atom, with an alkali metal carbonate or an alkali metal hydrogencarbonate in the presence of a catalytic amount of an amine or its inorganic acid salt or a quaternary ammonium salt.
提供了一种生产式如下的芳基乙烯基砜的方法:
其中,R1 和 R2 各自独立地表示氢原子、卤素原子、低级烷基、低级烷氧基、硝基、氨基、低级烷基氨基和低级二(烷基氨基)基团、
其中包括使式如下的 β-卤代乙基芳基砜反应
其中,R1 和 R2 如上定义,X 表示卤素原子,在催化量的胺或其无机酸盐或季铵盐存在下,与碱金属碳酸盐或碱金属碳酸氢盐反应。