Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclop

Details Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclop Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclop

1979-06-18

1981-03-03

Trousof, Natalie

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

Organic compounds

Carboxylic acids and salts thereof

2603433R, 260141, 560174, 560201, C07C 5109

Patent

active

042542820

ABSTRACT:
Lactones of the formula ##STR1## wherein R is hydrogen or a CX.sub.3 group, and each X is a chlorine or bromine atom, are converted to the known cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acids or lower alkyl esters, from which pyrethroid insecticides are obtained.

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