Process for the preparation of 2-amino-5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidine from 4-chloro-2,5-dimethoxypyrimidine

US9000160B2 · kind B2 · utility

Assignee

• DOW AGROSCIENCES LLC · US

Inventors

• Douglas C. Bland · Mason, US
• Gary Roth · Midland, US
• Craig Bott · Clare, US
• Christopher T. Hamilton · Midland, US
• Joseph Neuman · Cleveland Heights, US

Key dates

• Filing date: Sep 10, 2013
• Grant date: Apr 7, 2015
• Expiry date: Sep 10, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D239/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

2-Amino-5,8-dialkoxy[1,2,4]-triazolo[1,5-c]pyrimidines are manufactured from 4-chloro-2,5-dialkoxypyrimidines in a process that avoids hydrazine and cyanogen halide.