PROCESS FOR PRODUCTION OF CYCLOPROPANECARBOXYLIC ACID ESTER COMPOUND
申请人:Yoshikawa Kouji
公开号:US20120323034A1
公开(公告)日:2012-12-20
A method comprising an oximation step of reacting a formylalkenylcyclopropanecarboxylic acid ester represented by the formula (1):
(wherein, R
1
represents an alkyl group optionally having substituent(s) or halogen atom(s), and R
2
represents an alkyl group optionally having substituent(s) or a benzyl group optionally having substituent(s)) and hydroxylamine in a solvent in the presence at least one compound selected from the group consisting of carboxylic acids and carboxylic acid metal salts, to produce a hydroxyiminoalkenylcyclopropanecarboxylic acid ester represented by the formula (3):
(wherein, R
1
and R
2
are as defined above).
PROCESS FOR PREPARATION OF (Z)-CYANOALKENYLCYCLOPROPANECARBOXYLIC ACID COMPOUNDS
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.