Kyoto University

Nippoh Chemicals Co., Ltd.

Nippon Chemicals Co., Ltd.

Hiroshi Takahoso

Koji Midorikawa

Junichi Yoshida

Seiji Suga

Toshiyasu Sato

Norio Takahashi

Seiji c/o Graduate School Of Engineering Suga

Koji 4-39-11-410 Asumigaoka Midorikawa

Junichi c/o Graduate School Of Yoshida

The present invention is directed to provide a means, which enables production of a product superior in color tone in high yield by using an easy-to-handle and highly safe technique, in a method for producing an aromatic iodide. The present invention relates to a method for producing an aromatic iodide, characterized in that an aromatic compound and an active iodinating agent are fed into a flow reactor equipped with a high-speed mixer and hydrogen atom on the aromatic ring of said aromatic compound is continuously substituted by iodine atom.

Method for producing aromatic iodides

A method for the production of 3-cyano-3,5,5-trimethyl cyclohexanone by the reaction of isophorone with hydrogen cyanide in the presence of a quaternary ammonium salt or quaternary phosphonium salt and a basic compound as a catalyst in the form dissolved or dispersed in water or in the absence of water, which method comprises effecting said reaction by using said quaternary ammonium salt or quaternary phosphonium salt in an amount in the range of from 0.001 to 0.1 mol per mol of isophorone and said basic compound and in an amount in the range of from 0.5 to 3.0 mols per mol of said quaternary ammonium salt or quaternary phosphonium salt and, when water is used, using water in an amount in the range of 0.1 to 25% by weight based on the amount of isophorone and introducing hydrogen cyanidehydrocyanic acid at a ratio in the range of from 0.6 to 1.0 mol per mol of isophorone at a temperature in the range of from 90.degree. to 140.degree. C.

Method for production of 3-cyano-3,5,5-trimethyl cyclohexanone

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Mobara, Japan

Hiroshi Takahoso