申请人:Somyo Toshio
公开号:US20130006008A1
公开(公告)日:2013-01-03
A method for producing a (Z)-cyanoalkenyl-cyclopropanecarboxylic acid compound, which includes the step of isomerizing an (E)-cyanoalkenyl-cyclopropanecarboxylic acid compound (1) into a (Z)-cyanoalkenyl-cyclopropanecarboxylic acid compound (2) in the presence of at least one isomerizing catalyst selected from the group consisting of bromine, hydrogen bromide, brominated carboxylic acids, brominated phosphorus compounds, N-brominated imide compounds, N-brominated amide compounds, brominated alkylsilane compounds, thionyl bromide, brominated boron compounds, brominated aluminum compounds, thiol compounds, disulfide compounds, thiocarboxylic acid compounds, nitric acid and nitrate salts:
wherein R
1
and R
2
represent, R
1
represents an alkyl group which may have a substituent, or a halogen atom, and R
2
represents a hydrogen atom, an alkyl group which may have a substituent, or a benzyl group which may have a substituent.
一种生产(Z)-氰基烯丙基环丙烷羧酸化合物的方法,包括在至少选择自溴、氢溴酸、溴代羧酸、溴代磷化合物、N-溴代酰亚胺化合物、N-溴代酰胺化合物、溴代烷基硅烷化合物、溴代硫酰氯、溴代硼化合物、溴代铝化合物、硫醇化合物、二硫化合物、硫代羧酸化合物、硝酸和硝酸盐的异构化催化剂存在下,将(E)-氰基烯丙基环丙烷羧酸化合物(1)异构化为(Z)-氰基烯丙基环丙烷羧酸化合物(2):其中R1和R2分别表示,R1表示可以具有取代基或卤素原子的烷基基团,R2表示氢原子、可以具有取代基的烷基基团或可以具有取代基的苄基基团。