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Document Type and Number:
Japanese Patent JPH0136470
Kind Code:
B2
Abstract:
Novel dihalomethylenelactones of the general formula wherein X1 and X2 each individually represent a fluorine, chlorine or bromine atom. These compounds are useful intermediates in the manufacture of cis-2-(2,2-dihalo-vinyl)-3, 3-dimethyl-cyclopropane-carboxylic acids which are key intermediates in the preparation of the most active form of pyrethroid insecticides.

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Inventors:
PETORYUSU ANTONYUSU KURAMERU
Application Number:
JP7877181A
Publication Date:
July 31, 1989
Filing Date:
May 26, 1981
Export Citation:
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Assignee:
SHERU INTERN RISAACHI MAACHATSUPII BV
International Classes:
A01N43/12; A01N53/00; C07C61/40; C07D307/93



 
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