PYRIDYL ESTERS AND THIOLESTERS OF AMINO ACIDS,SYNTHESIS THEREOF AND COMPOSITIONS AND METHODS FOR THE CONTROL OF INSECTS AND ACARIDS COMPRISING THEM

摘要

Pesticidal Compounds of the general formula IMAGE wherein R1 is hydrogen or fluro; W is oxygen or sulfur; t is zero, one or two; Y is hydrogen chloro or fluoro; Z is trifluoromethyl, chloro, fluoro methoxy, methyl, ethyl, difluoromethoxy or trifluoromethoxy; R2 is hydrogen, methyl, ethyl, acetyl or formyl; R5 is hydrogen cyano, ethynyl or methyl and the salt thereof and a strong inorganic or organic acid. Such compounds may be used to control pests by application to the pests on to their habitat.