THE PRESENT INVENTION RELATES TO A FUSE HETEREOCYCLIC DERIVATIVE OF THE FORMULA(I) WHERE IN R1 IS SELECTED FROM CYANO, (2-4C)ALKENYL, (2-4C)ALKYNYL, (1-4C)ALKYL, EACH OPTIONALLY SUBSTITUTED WITH CN OR ONE OR MORE FLUORO ATOMS, (3-6C)CYCLOALKYL, (4-6C)CYCLOALKENYL OR A (8- 10C)BICYCLIC GROUP, EACH OPTIONALLY SUBSTITUTED WITH HALOGEN OR (1-4C)ALKYL OPTIONALLY SUBSTITUTED WITH ONE OR MORE FLUORO ATOMS, PHENYL, BIPHENYL, NAPHTHYL, EACH OPTIONALLY SUBSTITUTED WITH ONE OR MORE SUBSTITUENTS INDEPENDENTLY SELECTED FROM HALOGEN, CYANO, (1-4C)ALKYL OPTIONALLY SUBSTITUTED WITH ONE OR MORE FLUORO ATOMS, (1-4C)ALKOXY OPTIONALLY SUBSTITUTED WITH ONE OR MORE FLUORO ATOMS, AMINO, DIMETHYLAMINO, AND (3-6C)CYCLOALKYL OPTIONALLY SUBSTITUTED WITH PHENYL WHICH MAY BE SUBSTITUTED WITH (1-4C)ALKYL OR HALOGEN, AND PHENYL SUBSTITUTED WITH PHENOXY, BENZYL, BENZYLOXY, PHENYLETHYL OR MONOCYCLIC HETEROCYCLE, EACH OPTIONALLY SUBSTITUTED WITH (1-4C)ALKYL, Z IS A LINKING GROUP –W-(CN-ALKYLENE)-T- WHEREIN W IS ATTACHED TO R1 AND SELECTED FROM A BOND, -O-, CO –S- -SO-, -S02-NH-, -CH=CH, C(CF3)=CH-, -C=C-, CH2-O-, -O-C0-, -C0-0- CO-NH, -NH-C0- AND TRANS-CYCLOPROPYLENE； N IS AN INTEGER FROM 0 TO 10； AND T IS ATTACHED TO THE PHENYLENE/PYRIDYL MOIETY AND SELECTED FROM A BOND, 0- -S- S0, -SO2-, -NH-, -C0, -C= C-, AND TRANS-CYCLOPROPYLENE； N IS AN INTEGER FROM 0 TO 10； AND T I ATTACHED TO THE PHENYLENE/PYRIDYL MOIETY AND SELECTED FROM ABOND, -O-, -S-, -SO-, -SO2-,- NH-,-CO-,-C=C-, -C=C-, AND TRANS-CYCLOPROPYLENE； R2 IS H OR ONE OR MORE SUBSTITUENTS INDEPENDENTLY SELECTED FROM CYANI, HALOGEN, (1-4C)ALKYL OPTIONALLY SUBSTITUTED WITH ONE OR MORE SUBSTITUENTS INDEPENDENTLY SELECTED FROM CYANO, HALOGEN, (1-4C)ALKYL OPTIONALLY SUBSTITUTED WITH ONE OR MORE HALOGEN ATOMS, OR (1-4C) ALKOXY OPTIONALLY SUBSTITUED WITH ONE OR MORE HALOGEN ATOMS； RING STRUCTURE A MAY CONTAIN ONE NITROGEN ATOM； X IS SELECTED FROM C OR N； IF X IS C, R3 IS SELECTED FROM H AND (1-4C)ALKYL, OTHERWISE R3 IS NOT PRESENT； Y IS SELECTED
