Diaryl alkylphosphonates and methods for preparing same

US7928259B2 · kind B2 · utility

Assignee

• FRX Polymers, Inc. · US

Inventors

• Dieter Freitag · Krefeld, DE
• Savvas Hadjikyriacou · Lowell, US

Key dates

• Filing date: Feb 12, 2008
• Grant date: Apr 19, 2011
• Expiry date: Feb 12, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/4006
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for preparing substantially pure optionally substituted diaryl alkylphosphonates from an optionally substituted triarylphosphite and an optionally substituted trialkylphosphite or an optionally substituted alkanol under special reaction conditions is described.