Pfizer Corporation

Hugh C Richards

Richard C Koch

Robert J Bass

John E Thorpe

Novel (heterocyclicthio)phenyl N-alkylcarbamates, (heterocyclicthio)phenyl N-acyl-N-alkylcarbamates and their thionocarbamate analogs. The compounds are pesticidal agents, which are particularly suitable as ectoparasiticidal agents for use in sheep, cattle, horses, swine and the like.

Pesticidal carbamates

A method of treatment or control of diseases of rice plants comprising contacting the plants, and the seeds thereof with an effective amount of a compound of the formula: ##STR1## or a non-phytotoxic acid addition salt thereof, wherein each of X and Y completes a saturated or unsaturated pyrrolo- or pyrido-ring; X and Y may each be substituted with up to two substituents selected from halo, lower alkyl, phenyl, oxo or thio; And R is hydrogen, lower akyl, lower alkoxy, lower alkanoyl, benzoyl, hydroxy, lower alkanoyloxy, cyano, or halo; and Z is hydrogen or halo. Certain of these compounds are novel compounds and are claimed as such. Compositions for the treatment of plant diseases are also claimed.

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Canterbury, United Kingdom

Hugh C Richards