Patent number: 5157144
Abstract: Compounds of the formula (I): ##STR1## and stereoisomers thereof, wherein X is halogen, alkyl, cycloalkyl, aralkyl, aryloxyalkyl, alkenyl, alkynyl, aryl, amino, arylazo, heteroarylalkyl, heteroaryloxyalkyl, acylamino nitro, nitrile, trifluoromethyl, --OR.sup.1, SR.sup.1, --CO.sub.2 R.sup.2, --CONR.sup.3 R.sup.4, --COR.sup.5, --CR.sup.6 .dbd.NR.sup.7, --N.dbd.CR8R.sup.9, --SOR.sup.10 or --SO.sub.2 R.sup.11 ; W, Y and Z, which may be the same or different, are any of the atoms or groups listed for X above and, in addition, may be hydrogen atoms; or any two of the groups W, X, Y and Z, in adjacent positions on the phenyl ring, optionally join to form a fused ring, either aromatic or aliphatic, optionally containing one or more heteroatoms; R.sup.1 is alkyl, or cycloalkyl optionally containing a heteroatom in the cycloalkyl ring, alkenyl, acyl, aryl, heteroaryl, aralkyl or heteroarylalkyl; R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.8, R.sup.9, R.sup.10 and R.sup.
Type:
Grant
Filed:
May 31, 1991
Date of Patent:
October 20, 1992
Assignee:
Imperial Chemical Industries PLC
Inventors:
Vivienne M. Anthony, John M. Clough, Christopher R. A. Godfrey, Thomas E. Wiggens