Ube Industries, Inc.

Masao Eguchi

Keigo Nishihira

Hiroshi Itatani

Masayoshi Yamashita

Akira Iwayama

Toshiharu Yamazaki

Mitsuo Takahashi

Masaru Kurahashi

Toshiharu Yamasaki

Schinichiro Uchiumi

Shinicharo Uchiumi

A process for the preparation of dialkyl oxalates by reacting an aliphatic alcohol with carbon monoxide under pressure, which comprises carrying out the reaction in the presence of

Process for the preparation of dialkyl oxalates

A process for preparing dialkyl oxalates by reacting an aliphatic alcohol with carbon monoxide and oxygen under pressure. In the present process, (a) a catalyst consisting of a mixture of a salt of a platinum group metal and a salt of copper or iron and (b) an accelerator composed of one or more compounds selected from the group consisting of carbonates, hydrogen carbonates, nitrates, sulfates, hydroxides and carboxylates of an alkali metal and of an alkaline earth metal, pyridine, quinoline, glycine, alanine, urea, thiourea, formamide, acetamide, acetylacetone, ethyl acetoacetate, dimethylglyoxime, a tertiary amine, and a substituted or unsubstituted triphenyl phosphine are both used.

Process for preparing dialkyl oxalates

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Ube, Japan

Masao Eguchi