Asahi Glass Company, Limited

Yasuhiro Suzuki

Koichi Yanase

Takashi Okazoe

Kunio Watanabe

Shin Tatematsu

Daisuke Shirakawa

Hidenobu Murofushi

Masakuni Sato

Masahiro Ito

Takaaki Yokoyama

The present invention provides a method for producing industrially useful fluorine-containing compounds such as a fluorinated ester compound and an acid fluoride compound. Namely, the present invention resides in a method for producing a fluorinated ester compound, which comprises fluorinating an ester compound which is an ester of a compound having hydroxyl group(s) with a compound having acyl fluoride group(s) and which has a structure which can be fluorinated, in a liquid phase to produce a fluorinated ester compound, wherein the fluorination is carried out in the form of a liquid mixture of the ester compound and the compound having acyl fluoride group(s).

Method for producing a fluorinated ester compound

The present invention provides a method for preparing a compound of CFCFCFOCF&#x2550;CFby pyrolyzing a compound expressed by CFCFCFOCF(CF)COOCFCF(CF)OCFCFCFin a gas phase at a temperature of from 200&#xb0; C. to 500&#xb0; C.

Method for preparing unsaturated compound by pyrolysis reaction

A process for producing a fluorinated ester through a small number of steps, is presented. The process for producing a fluorinated ester, comprises a transesterification step in which R&#x2014;COOCF&#x2014;Rand R&#x2014;CHOH are subjected to a transesterification reaction to obtain R&#x2014;COOCH&#x2014;R, and a fluorination step in which the obtained compound is fluorinated to obtain a reaction product containing R&#x2014;COOCF&#x2014;R. Here, in the formulae, Ris a monovalent organic group, and Ris the same group as Ror a monovalent organic group obtained by fluorination of R.

Process for producing a fluorinated ester, a fluorinated acyl fluoride and a fluorinated vinyl ether

Process for purifying difluoromethane

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Ichihara, Japan

Yasuhiro Suzuki