Processes for the preparation of 4-alkoxy-3-(acyl or alkyl)oxypicolinamdes

US10040764B2 · kind B2 · utility

Assignee

• DOW AGROSCIENCES LLC · US

Inventors

• Gregory T. Whiteker · Carmel, US
• Nakyen Choy · Carmel, US
• Peter Borromeo · Fishers, US
• Nicholas R. Babij · Indianapolis, US
• Gary Roth · Midland, US
• Patrick S. Hanley · Midland, US
• Matthias S. Ober · Midland, US
• Tina Staton · Midland, US
• Daniel I. Knueppel · Zionsville, US
• Grant Von Wald · Midland, US
• Nicole Hough · Midland, US

Key dates

• Filing date: Jul 6, 2017
• Grant date: Aug 7, 2018
• Expiry date: Jul 6, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C271/22
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A fungicidal 4-methoxy-3-acetyloxypicolinamide may be conveniently prepared in processes that include the coupling together of 4-methoxy-3-acetyloxypicolinic acid or 4-methoxy-3-hydroxypicolinic acid with a key 2-aminopropanoate ester derived from a 1,1-bis(4-fluorophenyl)propane-1,2-diol.