6-Alkoxycarbonylpyridazin-3-one compounds and their use as intermediates in the preparation of pyridazin-3-one herbicides
申请人:Sumitomo Chemical Company, Limited
公开号:EP0963978A1
公开(公告)日:1999-12-15
The 6-alkoxycarbonylpyridazin-3-one compounds given in the formula:
wherein X represents a hydrogen or halogen atom; Y represents a halogen atom; R1 represents a C1-C6alkyl group; R2 represents a hydrogen atom or C1-C3alkyl group; R3 represents a C1-C3haloalkyl group; B represents a hydrogen atom, OR4 group or COOR5 group; R4 represents a hydrogen atom, C1-C6alkyl, C3-C6alkenyl, C3-C6alkynyl, (C1-C8alkoxy)carbonylC1-C6alkyl or carboxyC1-C6alkyl group; and R5 represents a hydrogen atom, C1-C6alkyl, C3-C6alkenyl or C3-C6alkynyl group,
are intermediates to produce the pyridazin-3-one compounds given in the formula:
which are herbicidal compounds.