Phosphinic acid derivatives

US4399287A · kind A · utility

Assignee

• FBC Limited · GB

Inventors

• Alister C. Baillie · Cambridge, GB
• Brian J. Wright · Chelmsford, GB
• Kenneth W. Wright · Los Angeles, US
• Christopher G. Earnshaw · Chesterton, GB

Key dates

• Filing date: Dec 5, 1980
• Grant date: Aug 16, 1983
• Expiry date: Dec 5, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/3217
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

There are described compounds of the formula I, ##STR1## in which R.sup.5 is methyl or halomethyl, PA1 R.sup.2 is --CN, --CONRyRz, --COOR.sup.6 or --COSR.sup.6, PA1 R.sup.1 and R.sup.6 each represent hydrogen, a cation or an optionally substituted alkyl, alkenyl, alkynyl or aryl, PA1 Ry and Rz each represent hydrogen, alkyl or aryl, PA1 A represents hydrogen, or PA1 A and one of --XR.sup.3 and --ZR.sup.4 together form a double bond, and the other of --XR.sup.3 and --ZR.sup.4 represents --OR.sup.10 or --NHR.sup.11 in which R.sup.10 is alkyl or acyl and R.sup.11 is alkyl, aryl or acyl, PA1 X and Z (when not forming part of a double bond with A), which may be the same or different, each represent oxygen, sulphur or a group --NR.sup.7 --, PA1 R.sup.7 represents hydrogen or alkyl, PA1 R.sup.3 and R.sup.4 each represent alkyl or R.sup.3 and R.sup.4 together form an optionally substituted alkylene or arylene chain PA1 or --XR.sup.3 and --ZR.sup.4 together form .dbd.C(CN).sub.2 or .dbd.NR.sup.8, in which R.sup.8 represents alkoxy, benzyloxy, hydroxy, phenyl, --NHCONH.sub.2, --NHCSNH.sub.2 or --NH phenyl, PA1 or one of --XR.sup.3 and --ZR.sup.4 is --OH (or an ester or ether thereof) and the…