PHOSPHORUS-CONTAINING FUNGICIDES

摘要

1525339 Salts of thiophosphorus acid monoesters PHILAGRO SA 12 March 1976 [14 March 1975] 09986/76 Heading C2P [Also in Divisions C1 and A5] Compounds of the general formula where R1 represents alkyl or hydroxy alkyl radical containing from 1 to 8 carbon atoms, M represents an agriculturally or horticulturally acceptable cation, and n is an integer equal to the valency of M, are disclosed. The compounds are obtained by the partial hydrolysis of cyclic diesters. Preparations are given of sodium 1- methyl-2.hydroxyethyl thiophosphite, sodium 2-methyl-2-hydroxyethyl thiophosphite, calcium 1-methyl-2-hydroxyethyl thiophosphite, calcium 2-hydroxypropyl thiophosphite, calcium 1-methyl-2-methyl-2-hydroxyethyl thiophosphite, magnesium 1-methyl-2-methyl-2- hydroxyethyl thiophosphite, calcium 3-hydroxypropyl thiophosphite, magnesium 3-hydroxypropyl thiophosphite, sodium 2,2-dimethyl-3- hydroxypropyl thiophosphite, calcium 2,2- dimethyl-3-hydroxypropyl thiophosphite, magnesium 2,2-dimethyl-3-hydroxypropyl thiophosphite, ammonium 2-hydroxyethyl thiophosphite, ammonium 1-methyl-2-hydroxyethyl thiophosphite, ammonium 2-methyl-2- hydroxyethyl thiophosphite, ammonium 1- methyl-2-methyl-2-hydroxyethyl thiophosphite, diethyl ammonium 1-methyl-2-hydroxyethyl thiophosphite, diethyl ammonium 2-methyl-2- hydroxyethyl thiophosphite, ammonium 3- hydroxypropyl thiophosphite, diethyl ammonium 3-hydroxypropyl thiophosphite, ammonium 2,2-dimethyl-3-hydroxypropyl thiophosphite, diethyl ammonium 2,2-dimethyl-3-hydroxypropyl thiophosphite, pyridinium 2,2-dimethyl- 3-hydroxypropyl thiophosphite, sodium ethyl thiophosphite, calcium ethyl thiophosphite, barium ethyl thiophosphite, magnesium ethyl thiophosphite, sodium isopropyl thiophosphite, calcium isopropyl thiophosphite, ammonium ethyl thiophosphite, diethylammonium ethyl thiophosphite, diethylammonium isopropyl thiophosphite and calcium n-propyl thiophosphite.