HMTA preparation of methylated tertiary amines

US5296633A · kind A · utility

Inventor

• Stephane Fouquay · Mont-Saint-Aignan, FR

Key dates

• Filing date: Dec 30, 1992
• Grant date: Mar 22, 1994
• Expiry date: Dec 30, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The methylated tertiary amines are selectively prepared by reacting a primary or secondary amine, or a nitrile or aminonitrile, including an aminoalcohol, etheramine, a polyamine or fatty polyamine or amidoamine, or amidopolyamine or dinitrile, with hexamethylenetetramine ("HMTA"), under hydrogen pressure at a temperature no greater than about 160.degree. C. and in the presence of a catalytically effective amount of a hydrogenation catalyst, e.g., nickel deposited onto appropriate support substrate therefor.