| abstract |
Procedure to prepare new (pyrimidyloxy) phenoxyalkanecarboxylic acids, of formula I: *** see image 01 and their optical isomers and their salts, where A, B, D, E and V are independently chosen from hydrogen, halogen, thiocyan, amino optionally substituted with one or more halogen atoms, C1 to C6 alkoxy, C1 to C6 alkylthio, C2 to C6 alkenyl, C3 to C7 cycloalkyl, carbalkoxy where alkoxy is a C1 to C6 alkoxy group, and the phenyl, phenoxy or phenylthio groups wherein the phenyl ring of each group is optionally substituted with one or more substituents selected from halogen, trifluoromethyl, C1 to C6 alkyl, C1 to C6 alkoxy, nitro and cyano; R1 and R2 are independently selected from hydrogen, C1 to C6 alkyl, C2 to C6 alkenyl, C2 to C6 alkoxyalkyl, C1 to C4 haloalkyl, acetyl and propionyl, or R1 and R2 may together form a methylene ethylidene, propylidene or isopropylidene group. |