摘要:
Provided is a method capable of efficiently manufacturing (meth)acrylic acid esters and aromatic carboxylic acid esters. This (meth)acrylic acid ester manufacturing method reacts a (meth)acrylic anhydride with a carbonate compound. For this aromatic carboxylic acid ester manufacturing method, which reacts a carboxylic anhydride with an aromatic carbonate in the presence of a catalyst, the catalyst is at least one kind selected from a set consisting of basic nitrogen-containing organic compounds, Group 1 metal compounds, and Group 2 metal compounds.
摘要:
An acetalsulfonate derivative useful as an intermediate for medicines and agricultural chemicals; a process for industrially producing the derivative; and a process for industrially producing a styrene oxide derivative from the acetalsulfonate derivative or from a mandelic acid derivative. The process for producing an acetalsulfonate derivative comprises: a first step in which a mandelic acid derivative is esterified to form a mandelic ester derivative; a second step in which the mandelic ester derivative is protected by an acetal to form an acetal derivative; a third step in which the acetal derivative is reduced to form an ethanediol derivative; and a fourth step in which the ethanediol derivative is reacted with a sulfonyl chloride derivative. The process for producing a styrene oxide derivative comprises the step of deacetalizing the acetalsulfonate derivative and the step of epoxidizing the thus-treated sulfonate derivative with the aid of a base catalyst.