Process for preparation of herbicidal derivatives

本及明涉及制备式(I)化合物的方法，所述方法包括在惰性有机溶剂中，任选在碱存在下将式(II)化合物与式(IV)、(IVa)或(IVb)化合物反应，以及任选将其中G是金属离子等同物或铵阳离子的所得式(I)化合物通过盐转化法转化成其中G是锍或�阳离子的相应式(I)盐，或者通过用Br�nsted酸处理转化成其中G是氢的相应式(I)化合物，以及任选在酸结合剂或催化剂存在下用式(XII)或(XIId)G#-[0]-L(XII)或R#-[32]-N＝C＝X#-[3](XIId)亲电子试剂将式(I)化合物'原位'转化成式(Ia)化合物。 A process for the preparation of compounds of formula I wherein R0 is, each independently of any other, halogen, C1-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C1-C6haloalkyl, cyano-C1-C6alkyl, C2-C6haloalkenyl, cyano-C2-C6alkenyl, C2-C6haloalkynyl, cyano-C2-C6alkynyl, hydroxy, hydroxy-C1-C6alkyl, C1-C6alkoxy, nitro, amino, C1-C6alkylamino, di(C1-C6alkyl)amino, C1-C6alkylcarbonylamino, C1-C6alkylsulfonylamino, C1-C6alkylaminosulfonyl, C1-C6alkylcarbonyl, C1-C6alkylcarbonyl-C1-C6alkyl, C1-C6alkoxycarbonyl-C1-C6alkyl, C1-C6alkylcarbonyl-C2-C6alkenyl, C1-C6alkoxycarbonyl-C2-C6alkenyl, C1-C6alkylcarbonyl-C2-C6alkynyl, C1-C6alkoxycarbonyl-C2-C6alkynyl, C1-C6alkoxycarbonyl, cyano, carboxyl, phenyl or an aromatic ring that contains 1 or 2 hetero atoms selected from the group consisting of nitrogen, oxygen and sulfur, wherein the latter two aromatic rings may be substituted by C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3