C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 255/40 (2006.01) A01N 37/42 (2006.01) A01N 39/00 (2006.01) A01N 39/02 (2006.01) A01N 43/00 (2006.01) A01N 43/06 (2006.01) A01N 43/40 (2006.01) A01N 43/54 (2006.01) A01N 43/60 (2006.01) A01N 43/74 (2006.01) A01N 47/12 (2006.01) C07C 255/17 (2006.01) C07C 255/21 (2006.01) C07C 323/22 (2006.01) C07C 323/29 (2006.01) C07D 211/16 (2006.01) C07D 213/57 (2006.01) C07D 213/64 (2006.01) C07D 239/30 (2006.01) C07D 241/44 (2006.01) C07D 277/68 (2006.01) C07D 295/185 (2006.01) C07D 307/16 (2006.01) C07D 307/24 (20
Patent
CA 2133894
ABSTRACT OF THE DISCLOSURE: A novel cyanoketone derivative of the following formula (1) ...(1) Image wherein A1 is an aromatic or heterocyclic group; each of X1 and X2 is independently an oxygen or sulfur atom; each of B1, B2 and B3 is independently a hydrogen atom or an alkyl group; Y1 is a hydrogen atom, a nitro group or a halogen atom; each of Y2, Y3 and Y4 is independently a hydrogen atom, a halogen atom or an alkyl group; A2 is an alkyl group, an alkoxy group or a benzoyl group, provided that when B1 is a hydrogen atom and B2 is alkyl, the compound of the formula (1) is either of enantiomers with regard to the asymmetric carbon to which B2 is bonded or a mixture of these enantiomers in an optional proportion. and a herbicide containing said derivative as an effective ingredient. The cyanoketone derivative of the present invention has a high selective herbicidal activity on broad-leaved weeds, but is safe for grasses such as wheat, corn and the like even when applied in a high dosage. Besides, said cyanoketone derivative is effective as a soil treating agent and a foliar treating agent when sprayed as a herbicide to the broad-leaved weeds.
Ishizaki Masahiko
Kato Shozo
Kitajima Toshio
Kobutani Tadashi
Yamaguchi Masao
Smart & Biggar
Tokuyama Corporation
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