1-aryl-1,4-dihydro-4-oxo-5-carboxypyridazine derivatives and...

Details 1-aryl-1,4-dihydro-4-oxo-5-carboxypyridazine derivatives and... 1-aryl-1,4-dihydro-4-oxo-5-carboxypyridazine derivatives and...

C - Chemistry, Metallurgy

07

D

260/264.7, 71/7.

C07D 237/24 (2006.01) A01H 1/00 (2006.01) A01N 43/58 (2006.01)

Patent

CA 1275098

ABSTRACT This invention relates to 1-aryl-1,4,-dihydro-4- oxo-5-carboxypyridazin derivatives of the formula Image wherein R1 is a (C1-C4) alkyl group, a phenyl group, a naphthyl group or a phenyl or napththyl group substituted with up to three substituents selected from the group consisting of halogen, nitro, trihalomethyl, (C1-C4)alkoxy, (C1-C4)alkyl and cyano; R5 is a carboxy (COOH) group or an alkali metal salt thereof, a carbalkoxy (COOR) group or a carboxamide (CONRR) group wherein R is a (C1-C4)alkyl group and the agronomically acceptable acid addition salts thereof; and R6 is a (C1-C4)alkyl group, a phenyl group, a naphthyl group or a phenyl or naphthyl group substituted with up to three substituents selected from the group consisting of halogen, nitro, trihalomethyl, (C1-C4)alkoxy, (C1-C4)alkyl and cyano. These derivatives are not only useful as plant growth regulators and hybridizing agents for cereal crops but possess the additional utility of having an improved margin of safety as concerns plant injury and seed quality.

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