Central Glass Company, Limited

Michio Ishida

Satoru Narizuka

Takashi Kume

Makoto Koide

Kazuhiko Maeda

Kentaro Tsutsumi

Yutaka Katsuhara

Yuzuru Morino

Yoshihiro Moroi

Seiji Hasegawa

Hiroshi Takahashi

Eri Tsukada

Takahiro Koizumi

Seiji Takasaki

There is provided according to the present invention a process for producing fluoromethyl hexafluoroisopropyl ether ((CF)CH&#x2014;O&#x2014;CHF), including: reacting bisfluoromethyl ether with hexafluoroisopropyl alcohol in a solvent substantially immiscible with hydrogen fluoride in the presence of a catalytic amount of a strong acid selected from sulfuric acid and any other acids stronger in acidity than sulfuric acid. The process of the present invention enables industrial production of the fluoromethyl hexafluoroisopropyl ether without using hydrogen fluoride or a large amount of sulfuric acid and thereby without causing a large amount of waste as a by-product.

Process for producing fluoromethyl hexafluoroisopropyl ether

Fluorine-containing polybenzoxazole

A method of producing benzamides represented by the following general formula (1):

Method of producing benzamides

The invention relates to a fluorine-containing polybenzoxazole including a structural unit represented by the general formula (1):

The invention relates to a method for producing a benzoic acid derivative represented by the general formula (1). The method includes the step of reacting an aromatic compound represented by the general formula (2), with carbon monoxide and a hydroxy compound (i.e., water or an alcohol), in the presence of (a) a metal compound containing a metal of 8, 9 and 10 groups of periodic table, (b) a first phosphine derivative represented by the general formula (R,),P&mdash;Q&mdash;P(R,),, and (c) a base,

Method for producing benzoic acid derivatives

The invention relates to a process for producing a trifluoromethylbenzylamine represented by the following general formula (1). This process includes hydrogenating a trifliuoromethylbenzonitrile represented by the following general formula (2) by hydrogen in an organic solvent in the presence of ammonia, using a Raney catalyst,

Process for producing trifluoromethylbenzylamines

The invention relates to a method for producing a bis(trifluoromethyl)benzene. This method includes the steps of (a) chlorinating a compound represented by the general formula (1) by chlorine, thereby to produce a trichloromethyltrifluoromethylbenzene; and (b) fluorinating the tricbloromethyltrifluoromethylbenzene by hydrogen fluoride, thereby to produce the bis(trifluoromethyl)benzene, ##STR1## where m is 1, 2 or 3. It is not necessary in the invention to handle solid in any reaction step. Therefore, the invention is very useful in the production of a bis(trifluoromethyl)benzene in an industrial scale

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Saitama, Japan

Michio Ishida