Organic pyridazyl phosphorothioates and their use as insecticide

Details Organic pyridazyl phosphorothioates and their use as insecticide Organic pyridazyl phosphorothioates and their use as insecticide

1975-10-06

1977-11-01

Turner, V. D.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Recombinant or stably-transformed bacterium encoding one or...

A01N 936

Patent

active

040566170

ABSTRACT:
New organic phosphorus compounds having the formula ##STR1## wherein R.sub.1 represents an alkyl group of 1-4 carbon atoms, R.sub.2 represents an alkoxy group of 1-4 carbon atoms or phenyl group and R.sub.3 represents hydrogen atom, an alkyl group of 1-4 carbon atoms, phenyl group or the group of the formula -X-R.sub.4 in which R.sub.4 represents an alkyl group of 1-6 carbon atoms or a benzyl group which may be substituted with a halogen atom in the phenyl moiety and X represents oxygen atom or sulfur atom. The present compounds are prepared by reacting a phosphoric or phosphonic acid halide having the formula ##STR2## wherein R.sub.1 and R.sub.2 are as defined above and Y represents a halogen atom with a pyridazinone derivative having the formula ##STR3## wherein R.sub.3 is as defined above. The present compounds show a superior insecticidal activity against various harmful insects, e.g., rice stem borers, planthoppers, mites, aphids, flies, mosquitoes and the like and thus they are useful as an insecticide or acaricide.

REFERENCES:
patent: 3100206 (1963-08-01), Rigterink
patent: 3878210 (1975-04-01), Lorenz et al.

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