C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/7, 167/6.5,
C07D 403/00 (2006.01) A01N 43/58 (2006.01) C07D 237/02 (2006.01) C07D 237/04 (2006.01) C07D 237/14 (2006.01)
Patent
CA 1194874
ABSTRACT Compounds of formula (I): Image (I) [in which: A represents a group of formula -CH=CH- or -CH2-CH2-, R1 represents a halogen atom; R2 represents a hydrogen atom, a hydroxy group, a halogen atom, an alkyl group or an alkoxy group; R3 represents a hydrogen atom or a halogen atom; and Y represents a hydroxy group, a halogen atom, an alkylamino group, a dialkylamino group, an a1kenylamino group, a dialkenylamino group, an anilino group if (n which the aromatic ring is unsubstituted or has one or two halogen and/or alkyl substituents), a cycloalkylamino group, a 1-pyrrolidinyl group, a piperidino group, a morpholino group, a group of formula Image (in which R4 represents an alkyl group or a phenyl group) or a group of formula Image (in which A, R1, R2 and R3 are as defined above)] are useful agricultural fungicides having greater systemic activity and chemical stability than known compounds of similiar structure. They may be applied as such or in a conventional preparation to seeds and growing plants. They may be prepared by reacting a 6-(substituted phenyl)-3(2H)-pyridazinone with formaldehyde and optionally with a halogenating agent, an appropriate amine or piperazine.
408886
Matsui Takashi
Takahi Yukiyoshi
Takeshiba Hideo
Teruomi Jojima
Marks & Clerk
Sankyo Company Limited
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