Pollen suppressant comprising a fused pyridazine

Details Pollen suppressant comprising a fused pyridazine Pollen suppressant comprising a fused pyridazine

C - Chemistry, Metallurgy

07

D

260/264.3, 71/7.

C07D 237/28 (2006.01) A01H 1/02 (2006.01) A01N 43/58 (2006.01) A01N 43/90 (2006.01) C07D 471/04 (2006.01) C07D 487/04 (2006.01) C07D 491/04 (2006.01) C07D 491/048 (2006.01) C07D 495/04 (2006.01)

Patent

CA 1250292

-34- ABSTRACT Pollen suppressants of the formula Image wherein Z represents a divalent organic radical of the formula -CH=CH-CH=CH-, -CH=CH-CH=N-, -CH=CH-N=CH-, -CH=CH-NH-, -CH=CH-O-, or -CH=CH-S- or said radical in which an H of Z is replaced with a halogen atom with the proviso that no more than three H of Z are replaced by fluorine; a C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkanoyl, cyano, nitro, hydroxy, or trihalomethyl group; or a group of the formula -NR1R2 wherein R1 and R2 independently represent a hydrogen atom or a C1-C4 alkyl group Y is Y1R3 or NR4R5 wherein Y1 is oxygen or sulfur; R3 is hydrogen, C1-C4 alkyl, C1-C4 alkoxyalkyl, cyclohexylmethyl, halogenated C1-C4 alkyl, phenyl, or benzyl; and R4 and R5 are independently selected from the group consisting of hydrogen, C1-C4 alkyl, or C1-C4 alkyl substituted with carboxyl or C1-C4 alkoxycarbonyl, and R represents C1-C4 alkyl, phenyl, naphthyl, or phenyl or naphthyl substituted with one to three substituents selected from the group consisting -35- of halogen, trihalomethyl, C1-C4 alkoxy, C1-C4 alkyl, and cyano, are disclosed along with methods of producing these compounds and of using them to produce hybrid seeds in self-fertilizing plants.

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