Process for the preparation of .alpha.-cyanobenzyl esters

Details Process for the preparation of .alpha.-cyanobenzyl esters Process for the preparation of .alpha.-cyanobenzyl esters

1980-10-03

1982-02-16

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12004, C07C12166, C07C12175

Patent

active

043158684

ABSTRACT:
Novel esters in the form of their stereoisomers and mixtures of stereoisomers of the formula ##STR1## wherein X is selected from the group consisting of fluorine, chlorine and bromine R.sub.1 is selected from the group consisting of ##STR2## Y.sub.1 and Y.sub.2 may both be methyl and when Y.sub.1 is hydrogen, Y.sub.2 is selected from the group consisting of ##STR3## and Y.sub.3 and Y.sub.4 are individually selected from the group consisting of fluorine, bromine and chlorine or the group consisting of hydrogen and methyl, Z is selected from the group consisting of hydrogen, fluorine, chlorine, bromine, alkyl of 1 to 4 carbon atoms and alkoxy of 1 to 4 carbon atoms, and when Y.sub.2 is ##STR4## R.sub.2 is selected from the group consisting of ##STR5## A is selected from the group consisting of ##STR6## and when Y.sub.2 is -CHBr-CCl.sub.2 Br, R.sub.2 is m-phenoxy-phenyl and when R.sub.1 is R.sub.1 ' and Y.sub.2 is ##STR7## the said acid moiety may be in the cis or trans form or mixtures thereof or optically active isomeric form or racemic mixtures thereof and when R.sub.1 is R.sub.1 ", the said acid moiety is optically active isomeric form or racemic mixtures thereof and the compounds may be in one of two diastereoisomeric forms due to the existence of the asymetrical carbon atoms to which X is attached having insecticidal activity and their preparation.

REFERENCES:
patent: 3835176 (1974-09-01), Matsuo et al.
patent: 4153626 (1979-05-01), Tieman

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