Patent ID: 6861106

Claim:
A compound having formula (I): wherein A is B is —CHC(CN)COOR 4 and X and Y are both hydrogen when A is wherein R 1 , and R 4 are each independently a C 1-10 alkyl group which may be substituted by one or more fluorine atoms; and B is —NR 6 R 7 and X and Y are different and X is a C 1-4 alkyl group, and Y is Cl, Br, I, a C 1-4 alkyl group, —OCH 3 , or —OC 2 H 5 or X and Y, being the same, are H, Cl, Br, I, a C 1-4 alkyl group, —OCH 3 , or —OC 2 H 5 when A is wherein R 5 is —CH 3 or —C 2 H 5 , and R 6 and R 7 are each independently a C 1-10 alkyl group, —CH 2 CH 2 (CF 2 ) m F, wherein m is an integer of 1 to 10 and R 3 is an C 1-4 alkyl group.