N-cyanomethyl-2-pyridinone insecticides

US4931452A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Sudarshan K. Malhotra · Walnut Creek, US
• James E. Dripps · Carmel, US
• Gregory A. Bradfisch · San Diego, US
• Susan Wollowitz · Walnut Creek, US
• Ingrid L. Knox · Antioch, US

Key dates

• Filing date: Aug 24, 1988
• Grant date: Jun 5, 1990
• Expiry date: Aug 24, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/85
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Substituted N-cyanomethyl-2-pyridinones were prepared by the reaction of alkali metal substituted-2-pyridinates with monohaloacetonitriles and found to possess insecticidal properties. The alkali metal substituted-2-pyridinates can be preformed or prepared from the corresponding 2-halopyridines or 2-pyridinols in the reaction medium. N-cyanomethyl-3-fluoro-5-(trifluoromethyl)-2-pyridinone, for example, was prepared from 2,3-difluoro-5-(trifluoromethyl)pyridine and found to control aster leafhoppers both on contact and systemically.