abstract |
The present invention provides an industrially advantageous method of producing a pyridazinone compound. The present invention relates to the following method of producing a pyridazinone compound: Formula (II), (IIIa), (IV) or (IV"), Formula (IIIb), (Vb) or (V"b), Formula (VI), (I) or (I"). wherein each symbol is as described in the specification. |