Sumitomo Chemical Company, Limited

Akio Kurihara

Koji Hagiya

Isao Kurimoto

Naoyuki Takano

Shinzo Seko

Ichiro Komoto

Akihiro Orita

Jyunzou Otera

Process for producing carbonyl or hydroxy compound

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

A process for producing a purified aryl vinyl sulfone solution, characterized in that an aryl vinyl sulfone is crystallized from an organic solvent solution of a crude aryl vinyl sulfone to give a crystallization mixture, and a wet cake of the aryl vinyl sulfone obtained by the separation of the solution from the said mixture is dissolved in a solution-forming solvent selected from ethers of 4 to 8 carbon atoms, aromatic hydrocarbons of 6 to 10 carbon atoms, halogenated hydrocarbons of 1 to 6 carbon atoms, ketones of 3 to 8 carbon atoms, esters of 3 to 6 carbon atoms, and nitrites of 2 to 6 carbon atoms.

Process for producing aryl vinyl sulfone solution and use thereof

The present invention provides a safer and more efficient process for producing &lsqb;2-(arylsulfonyl)ethenyl&rsqb;benzene derivatives of the formula (3):

Process for producing &lsqb;2-(arylsulfonyl) ethenyl&rsqb; benzene derivatives

There is provided a method for producing arylvinylsulfone of the formula: ##STR1## wherein, R.sup.1 and R.sup.2 denote each independently a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group,

Method for producing arylvinylsulfone

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Toyonaka, Japan

Akio Kurihara