New 3,4-diaminopyridine derivatives useful as catalysts in a chemical reaction including acylation reaction of alcohols, or in urethane and/or a polyurethane synthesis

摘要

3,4-Diaminopyridine derivatives (I), are new. 3,4-Diaminopyridine derivatives of formula (I), are new. R 1alkyl, alkenyl, alkynyl, alkoxy or aryl (all optionally substituted); and either R 2-R 6alkyl, alkenyl, alkynyl, alkoxy or aryl (all optionally substituted) or H; or R 3 and/or R 4+R 5 and/or R 6a ring. An independent claim is included for the preparation of (I). [Image].