Nippon Shokubai Co., Ltd.

Nippon Shokubai Kagaku Kogyo Co., Ltd.

Masaru Awashima

Osamu Kaieda

Koichi Hirota

Toshiaki Nakamura

Norimasa Okuda

Takashi Yodoshi

Hisakazu Shindo

Yujin Shoda

Teruhisa Kajiwara

Toyohiko Kohno, Deceased

Yoshiro Hanayama

Isao Okitaka

Hideki Itoh

A nuclear halogenated aromatic compound possessing cyano groups is produced by a method using as a raw material an aromatic compound which possesses cyano groups and assumes a solid state at room temperature and subjecting the raw material to a procedure comprising a step of melting and transporting the compound by a means transport-melting, a step of vaporizing the compound, a step of mixing the compound with a halogen gas, and a step of causing the vapor of the compound to react with the halogen gas in vapor phase in the presence of a catalyst sequentially in the order mentioned, which comprises maintaining a content of a self-condensate of the aromatic compound possessing cyano groups which arise during the melting of the aromatic compound possessing cyano groups in a gas of the compound which reacts with the halogen gas to a level of not more than 2.5 mol % based on the compound. The catalyst used in the method is activated carbon such that the average pore radius thereof determined by the nitrogen adsorption method is not less than 12.2 .ANG. and the cumulative pore volume of the portion of the activated carbon having pore radiuses in the range of 5-100 .ANG. determined by the steam adsorption method is not less than 0.45 g/cc.

Method for production of nuclear halogenated aromatic compound

Method for production of nuclear halogenated aromatic compound possesing

A method for the production of a fluorinated quinone, which comprises causing a chlorinated aromatic compound represented by the general formula I: ##STR1## wherein A denotes O, ##STR2## (where m denotes an integer of the value of 1 to 4 and l denotes an integer of the value of 0 to 3), X denotes Cl, F, or H, n denotes an integer of the value of 0 to 4, k denotes an integer of the value of 0 to 3, and p denotes 0 to 1, providing that p is 1 and n is not zero where A is O, to react in benzonitrile as a medium at a temperature in the range of 190.degree. to 400.degree. C. with at least one fluorinating agent selected from the group consisting of alkali metal fluorides and alkaline earth metal fluorides under spontaneously generating pressure.

Method for production of fluorinated quinones

Organic fluorine compounds such as pentafluorobenzonitrile, tetrafluorophthalonitriles, and pentafluoropyridine are produced by a method which comprises causing a chloro- or bromo-organic compound to react with a fluorinating agent such as an alkali metal fluoride in benzonitrile as a solvent at temperatures in the range of 190.degree. to 400.degree. C. under at least spontaneously generated pressure.

Method for manufacture or organic fluorine compounds

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Osaka, Japan

Masaru Awashima