C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/268, 260/297
C07D 213/24 (2006.01) A01N 43/40 (2006.01) A01N 43/60 (2006.01) C07D 213/26 (2006.01) C07D 213/30 (2006.01) C07D 213/32 (2006.01) C07D 213/50 (2006.01) C07D 213/57 (2006.01) C07D 213/89 (2006.01) C07D 241/12 (2006.01)
Patent
CA 1227798
Abstract The invention is concerned with novel pyridine and pyrazine derivatives of the formula Image I wherein R signifies phenyl substituted with 1 to 3 halogen atoms, the two ortho-positions not being occupied simulta- neously, R1 signifies halogen, alkyl, OR5, SR5 or OSO2R5, R2 signifies hydroxy or chlorine, R3 signifies hydrogen or alkyl, R4 signifies 3-pyridyl, 3-pyridyl-1-oxide, 2-pyrazinyl, 2-pyrazinyl-1-oxide, 2-pyrazinyl-4-oxide or 2-pyrazinyl-1,4-dioxide and R5 signifies alkyl, with the proviso that where R2 signifies chlorine and R3 signifies alkyl, R1 cannot be bromine or iodine, and acid addition salts of these compounds, a process for their manufacture, fungicidal compositions which contain these compounds as the active substance as well as the use of such compounds or compositions for the control of fungi in agriculture and in horticulture. Moreover, the invention is concerned with starting materials and fungicidal active substances of the formula Image V wherein R has the significance given above, R1'' signifies alkyl and R4' signifies 3-pyridyl or 2-pyrazinyl, which are used for the manufacture of the compounds of formula I, and their N-oxides as well as fungicidal compositions which contain these compounds as the active substance.
409488
Dorn Franz J.
Montavon Francois
Suchy Milos
Gowling Lafleur Henderson Llp
Hoffmann La Roche Limited
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