PROCESS FOR THE PREPARATION OF TRIAZOLINONE HERBICIDES

摘要

A process for the preparation of substituted 1,2,4-triazoline-3(2H)-ones of general formula (I) (see fig. I) (I) by reacting an amide of general formula (IV) (see fig. IV) (IV) with phosgen or thiophosgen or a phosgen substitute or thiophosgen substitute to a compound of general formula V (see fig. V) (V) and subsequent reaction of (V) with a compound of general formula (VI) or of an acid addition salt of (VI) Q-NH-NH-CO-R26 (VI) to compounds of general formula (I). Compounds of general formula (I) can be used as herbicides.