Patent ID: 7250511

Claim:
A compound of formula (V): wherein: R is hydrogen, C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, C 1-4 halogenoalkyl or C 1-4 cyanoalkyl; or R is a group A(CH 2 ) p where A is R 0 O or R 0 R 1 N wherein R 0 and R 1 are each independently hydrogen, C 1-4 alkyl, C 3-4 alkenyl, C 3-4 alkynyl, C 2-4 hydroxyalkyl, C 2-4 halogenoalkyl or C 1-4 cyanoalkyl, or R 0 and R 1 together with the intermediate N form a five-or six-membered heterocyclic ring and p is an integer in the range 0 to 4; and Ar 1 is phenylene or pyrimidinediyl which may optionally bear one or two substituents selected from halogeno, hydroxy, amino, nitro, cyano, trifluoromethyl, C 1-4 alkyl and C 1-4 alkoxy; X is an alkoxy, aryloxy or optionally substituted amino group; Y is CN or a leaving group selected from Br, Cl and I; or a protected derivative thereof.