Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha

Shigenori Wakabayashi

Kazumasa Hirata

Toshio Yamamoto

Akio Katsuura

In producing formylimidazoles by catalytically oxidizing the corresponding 4- or 5-hydroxymethylimidazoles, the catalytic oxidation is carried out in the presence of a noble metal catalyst while oxygen or air is blown into the reaction system. In this case, it is particularly desirable that the catalytic oxidation in the presence of a noble metal catalyst be carried out in a solvent comprising an aqueous alkali or in a mixed solvent composed of an aqueous alkali and an organic solvent immiscible with water.

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Osaka, Japan

Shigenori Wakabayashi