Preparation of N,N'-methylene-2,2'-azopyridocyanines

US4594413A · kind A · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Shekhar Munavalli · Bel Air, US
• Edward J. Poziomek · Las Vegas, US

Key dates

• Filing date: Aug 13, 1985
• Grant date: Jun 10, 1986
• Expiry date: Aug 13, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D487/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a one step process for reacting certain aminopyridines and pmidines with a methylene halide, preferably methylene iodide, at reflux for from about overnight to about 72 hours to obtain corresponding N,N'-methylene-2,2'-azopyridocyanines in good yields.