Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)cycl

Details Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)cycl Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)cycl

1989-05-16

1990-08-14

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 69743

Patent

active

049489143

ABSTRACT:
Trans-2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid esters which are intermediate of insecticides are prepared by allowing (1) alkali metal alkoxides and titanium alkoxides or (2) silicon iodides to react with cis- or cis-/trans-mixed 2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid esters of the formula ##STR1## wherein X is a halogen atom and R is an alkyl, cycloalkyl or aralkyl group having 1-10 carbon atoms.

REFERENCES:
patent: 3794680 (1974-02-01), Matsui
patent: 4473703 (1984-09-01), Suzukamo
patent: 4788323 (1988-11-01), Suzukamo
patent: 4820864 (1989-04-01), Suzukamo

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