(thiono) (thiol) pyridazinone-alkanephosphonic acid esters,...

Details (thiono) (thiol) pyridazinone-alkanephosphonic acid esters,... (thiono) (thiol) pyridazinone-alkanephosphonic acid esters,...

C - Chemistry, Metallurgy

07

F

167/7, 167/6.5,

C07F 9/6509 (2006.01) A01N 57/24 (2006.01)

Patent

CA 1081225

Abstract of Disclosure The present invention relates to certain new (thiono)- (thiol)pyridazinone-alkanephosphonic acid esters, to a process for their preparation and to their use as insecticides and acaricides. It is already known that (thiono)pyridazinephosphoric- (phosphonic) acid esters, for example 0,0-diethyl-0[1,6- dihydro-1-phenyl-, 1-methyl-, 1-carbethoxymethyl-, 1-(2'- cyanoethyl)- and 1-(2'-methyl-carbonylethyl)-6-pyridazinon- (3)yl]-thionophosphoric acid esters, 0,0-diethyl-0-[1,6- dihydro-1-phenyl-6-pyridazinon(3)yl]-phosphoric acid ester and 0-ethyl-0-[1,6-dihydro-6-pyridazinon(3)yl]-thionoethane- phosphonic acid ester, possess insecticidal and acaricidal properties (see U.S.Patent Specifications 2,759,937 and 3,310,560 and Netherlands Published Patent Application 6,904,664).

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