. . "wherein said substituent is halogen such as chloro, fluoro, bromo, iodo, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, cyano, C.sub.3 -C.sub.15 dialkylaminoalkyl, carboxy, carboxamido, C.sub.1 -C.sub.8 alkylthio, allyl, aralkyl, alkaryl," . .