72223-90-6Relevant articles and documents
Process for the preparation of esters
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, (2008/06/13)
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 R1 is selected from the group consisting of STR2 Y1 and Y2 may both be methyl and when Y1 is hydrogen, Y2 is selected from the group consisting of STR3 and Y3 and Y4 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 Y2 is STR4 R2 is selected from the group consisting of STR5 A is selected from the group consisting of STR6 and when Y2 is --CHBr--CCl2 Br, R2 is m-phenoxy-phenyl and when R1 is R1 ' and Y2 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 R1 is R1 ", 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.
