Nematicides against pine wood nematodes

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – C-o-group doai

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4241961, A61K 31055, A01N 3108

Patent

active

055300308

ABSTRACT:
Highly effective nematicides against pine wood nematodes containing chlorinated hydroxystilbene or salts thereof (preferably, 3',4'-Dichloro-3-hydroxystilbene and 3',5'-dichloro-3-hydroxystilbene) which are prepared by synthesizing chlorinated methoxystilbenes from chlorinated benzyl chloride compounds and methoxybenzaldehydes by the Wittig-Horner reaction, performing demethylation to obtain the chlorinated hydroxystilbenes, and preparing the salts thereof by conventional methods, if necessary.

REFERENCES:
patent: 2854375 (1958-09-01), Shackell
patent: 3692916 (1972-09-01), La Barbera
patent: 3833736 (1974-09-01), Frick
patent: 3930025 (1975-12-01), Albright et al.
patent: 5314693 (1994-05-01), Suga
Chem. Pharm. Bull. 40(5) 1130 (1992), Mohammad Ahad Ali et al. "Synthesis and Nematocidal Activity of Hydroxystilbenes".
Chemical Abstracts 78, 48(1973) 155087t; Gibbs, J. N.
Chemical Abstracts 88, 134(1978)116230w; Gorham, John.
Chemical Abstracts 111, 434(1989) 171162u, Koichiro et al.

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