MY101372A - Novel phosporus compounds as active ingredients for protecting crop plants from the phytotoxic effect of herbicides - Google Patents

Abstract

NOVEL ACYLATED HYDRAZINOMETHYL PHOSPHONIC ACIDS, HYDRAZINOMETHYL PHOSPHONATES, HYDRAZINOMETHYL PHOSPHINIC ACIDS, HYDRAZINOMETHYL PHOSPHINATES OR HYDRAZINOMETHYLPHOSPHINE OXIDES OF FORMULA 1 BELOW, ASCOUNTER-AGENTS, "ANTIDOTES" OR SAFENER", ARE CAPABLE OF PROTECTING CROP PLANTS FROM THE PHYTOTOXIC EFFECT OF HERBICIDES. PREFERRED CROP PLANTS ARE MAIZE, SORGHUM, CEREALS, RICE AND SOYBEAN, AND PARTICULARLY PREFERRED HERBICIDES ARE CHLOROACETANILIDES. THE ACYLATED HYDRAZINOMETHYLPHOSPHONATES, HYDRAZINOMETTYLPHOSPHINATES OR HYDRAZINOMETHYLPHOSPINE OXIDES ARE OF THE FORMULA 1. WHEREIN R1 AND R2 IDEPENDENTLY OF ONE ANOTHER DENOTE HYDROXYL, ALKYL, ARYL, PHENYLALKYL, ALKOXY, ALKENYLOXY, ALKYNYLOXY, ARYL OR PHENYLALKOXY, WHICH RADICALS CAN ALSO BE SUBSTITUTED, R3 DENOTES A HALOGENATED ALKANOYL OR ALKENOYL RADICAL, R4 DENOTES HYDROGEN, A HALOGENATED ALKANOYL OR ALKENOYL RADICAL OR AN ALKYL, ALKENYL, PHENYLALKYL, OR AN ALKYL CARBONYL, ALKENYLCARBONYL, ALKYNYLEARBONYL, PHENYLEARBONYL RADICAL WHICH CAN ALSO BE OPTIONAL SUBSTITUTED OR AN ALKOXYCARBONYL OR PHENYLALKOXYEARBONYL RADICAL WHICH CAN BE SUBSTITUTED, R5 DENOTES HYDROGEN, OR AN ALKYL, ALKENYL OR ALKYNYL RADICAL WHICH CAN ALSO BE SUBSTITUTED, R9 DENOTES HYDROGEN, ALKYL OR AN OPTIONALLY SUBSTITUTED PHENYL RADICAL AND R10 DENOTES HYDROGEN OR ALKYL.