to C.sub.3 alkoxy, C.sub.1 to C.sub.3 alkyl, NO.sub.2, C.sub.1 to C.sub.3 perfluoroalkyl, 5 membered heterocyclic ring containing 1 to 3 heteroatoms, C.sub.1 to C.sub.3 thioalkoxy; Y is a substituent from the group including H, halogen, CN, NO.sub.2,