Sumitomo Chemical Company, Limited

Ichiro Komoto

Toru Uekawa

Kouji Yoshikawa

Jun Ohshita

Koji Hagiya

Kazuaki Sasaki

Akio Kurihara

Tomohiko Gotou

A process for producing comprising reacting a 3-formyl-2,2-dimethylcyclopropanecarboxylate and propionitrile in the presence of a base to obtain 3-(2-cyano-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid or its salt.

Process for producing 3-(2-cyano-1-propenyl)-2,2- dimethylcyclopropanecarboxylic acid or salt thereof

A process for producing an imidazo[1,2-b]pyridazine compound represented by the formula (2): wherein R, Rand Rare the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group which may be substituted with a halogen atom or atoms, an alkenyl group which may be substituted with a halogen atom or atoms, or an alkoxy group which may be substituted with a halogen atom or atoms, which comprises reacting a 2,3-dihydropyridazine compound represented by the formula (1): wherein R, Rand Rare the same meanings as defined above, with a phosphorus oxyhalide in the presence of an organic base which is in an amount of 0.5 mole or more relative to 1 mole of the 2,3-dihydropyridazine compound and 1 mole or less relative to 1 mole of the phosphorus oxyhalide.

Process for producing imidazo[1,2-b]pyridazine compound

A method for producing a cyclopropanecarboxylic acid compound represented by formula (VI)  

Method for producing cyclopropane carboxylic acid compound and intermediate therefor

Process for producing 3,3-dimethyl-2-formylcyclopropane-carboxylic acid ester

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Nishinomiya, Japan

Ichiro Komoto