Method for making aromatic phosphorus compounds

US4698448A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Werner Ude · Darmstadt, DE
• Siegmund Besecke · Hameln, DE
• Achim Riemann · Marburg, DE
• Guenther Schroeder · Ober-Ramstadt, DE

Key dates

• Filing date: Jul 2, 1985
• Grant date: Oct 6, 1987
• Expiry date: Jul 2, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G79/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein R is lower alkyl or aryl, Y is oxygen or sulfur, m is 0 or 1, Ar is arylene, and X is halogen, methyl, or aryloxy, or polymers containing repeating units of this kind are prepared from a compound R--P(Y).sub.r Cl.sub.2, where r is 0 or 1 but is never greater than m, by reaction with one or two molar parts of a compound H--ArX in the presence of a Friedel-Crafts catalyst.