Process for the preparation of triazolinone herbicides

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 471/04 (2006.01) C07C 243/28 (2006.01) C07D 249/12 (2006.01) C07D 401/00 (2006.01) C07D 405/00 (2006.01) C07D 409/00 (2006.01) C07D 413/00 (2006.01) C07D 417/00 (2006.01) C07D 487/04 (2006.01) C07D 498/04 (2006.01) C07D 513/04 (2006.01) C07F 7/10 (2006.01)

Patent

CA 2194930

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.

Procédé permettant de préparer des 1,2,4-triazoline-3(2H)-ones substituées présentant la formule générale (I) (voir fig. I) (I), en faisant réagir un amide présentant la formule générale (IV) (voir fig. IV) (IV) avec du phosgène, du thiophosgène, un substitut du phosgène ou un substitut du thiophosgène pour obtenir un composé présentant la formule générale V (voir fig. V)(V), puis en faisant réagir ce dernier composé (V) avec un composé présentant la formule générale (VI) ou un sel d'addition acide de (VI) Q-NH-NH-CO-R26 (VI) pour obtenir des composés de formule générale (I). Les composés présentant la formule générale (I) peuvent être utilisés comme herbicides.

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