process for the preparation of 2 - (2,2 - dihalo - geenvinyl) - 3.3 - dimethyl - 1.1 - di substituted cyclopropaanderivaten.

摘要

A compound of the formula: IMAGE wherein X and Y are independently selected from cyano and alkoxycarbonyl containing from 1 to 4 carbon atoms in the alkoxy group, and Q, R and Z are independently selected from chlorine and bromine provided that Q is always bromine when either Z or R is bromine. The compounds are useful as chemical intermediates.