PROCESS FOR PREPARING 2-4-5-HALOGEN SUBSTIUTED PYRIDYL-2-OXY ALKANECARBOXYLIC ACIDS AND DERIVATIVES THERE OF

摘要

Herbicidal title compds.(I; X1 = halogen ; X2 = H, halogen ; R1 = OH, C1-5 alkoxy, C2-4 alkenyloxy, methyl-substituted cyclohexyl oxy. oHh, C1-4 alkylthio, SC6H4Cl, NH2, Pyridyl amino, -O-cation ; R2 = C1-4 alkyl) were prepd. by condensation of 4-(5-halogen-substituted pyridyle-2-oxy) phenole(II) and -haloalkanecarboxylic acid derivs.(III) in alk., at 40-120≦̸C for 1-10hr.