THIONOPHOSPHORIC ACID AMIDE DERIVATIVE, ITS PREPARATION, AND PLANT BLIGHT CONTROLLING AGENT CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

• Main Authors: SASAKI MITSURU, KOUSAKA HIDEO, ISHIKURI YUKIO
• Format: Patent
• Language: English
• Published: 12.12.1983
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; METALLURGY; ORGANIC CHEMISTRY; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

NEW MATERIAL:The compound of formula I (R1 is 1-4C alkyl; R2 is methyl or ethyl). EXAMPLE:O-methyl O-(3,5-dimethoxyphenyl) N-sec-butyl phosphoroamidothioate. USE:Agent for prevention and remedy of various plant blights caused by phycomycetes, e.g. downey mildew, late blight, etc. PROCESS:The objective compound can be prepared by dissolving the thionophosphoric acid amide chloride of formula II (e.g. O-methyl N-sec-butyl thionophosphoric acid amide chloride) and 3,5-dimethoxyphenol in a solvent such as acetonitrile, and condensing the components in the presence of an acid scavenger (e.g. potassium carbonate).