S-Phenylcarbamoylmethyl (di)thio-phosphoramidates - for uses as herbicides, insecticides, acaricides and nematocides

摘要

New S-(phenylcarbamoylmethyl) (di)thiophosphoramidates are of formula (I): In the formula each R is halogen, 1-6C alkyl, 1-3C haloalkyl, MeO, EtO, NO2 or MeS; R1 is H or 1-6C alkyl; R2 is 1-6C alkylamino, 3-8C alkenylamino, di(1-6C alkyl)amino, 5-8C cycloalkylamino, or a satd. N heterocycle contg. 4-8C atoms, 1 or 2 of which can be in a side chain, one of the ring CH2 gps. being opt. replaced by O or S; R3 is 1-6C alkyl; X is O or S; n = 0-3. Cpds. (I) are useful as selective herbicides, insecticides, acaricides and nematocides. As herbicides, they can be used to control, e.g., Alopecurus and Galium in cereals, Echinochloa in maize, and Setaria in soya or cotton. In an example, (I; n = O, R1 = i-Pr, R2 = NHMe, R3-Et, X = O) was prepd. from NH4S(O)P(OEt)NHMe and N-isopropyl-chloroacetanilide.