Title:
【発明の名称】トリフルオロメチル基を有するシクロヘキサンカルボン酸の製造方法
Document Type and Number:
Japanese Patent JPH0672123
Kind Code:
B2
Abstract:
PURPOSE:To obtain the titled compound useful as an intermediate for preformed chemical mediator, etc., by reducing an aromatic carboxylic acid containing trifluoromethyl group as a raw mateiral, and to improve yield, by carrying out the reaction in a specific solvent in the presence of a catalyst under a mild condition. CONSTITUTION:A trifluoromethyl group-containing aromatic carboxylic acid shown by formula I (R is H, 1-3C perfluoroalkyl, lower alkyl or lower alkoxy; m and n are 1 or 2) as a raw material is reacted in the presence of a hydrogenating catalyst (preferably metal of platinum group, especially rhodium or platinum is used) by the use of preferably 1-20 times as much a fluorinated alcohol as a solvent as the raw material compound shown by formula I at 50-200 deg.C at 5-20kg/cm<2> to give the aimed compound. The fluorinated alcohol useful as the solvent is shown by formula II (R<1> is 1-3C perfluoroalkyl; R<2> and R<3> are H, 1-3C perfluoroalkyl, etc.).
Inventors:
Junji Negishi
Michio Sawai
Michio Sawai
Application Number:
JP19399086A
Publication Date:
September 14, 1994
Filing Date:
August 21, 1986
Export Citation:
Assignee:
Central Glass Co., Ltd.
International Classes:
B01J23/42; B01J23/46; C07C51/00; C07C51/36; C07C61/15; C07B61/00; C07C62/10; C07C67/00; (IPC1-7): C07C61/15; B01J23/42; B01J23/46; C07C51/36; C07C62/10
Attorney, Agent or Firm:
Eiichi Sakamoto
Next Patent: ４−クロロフタル酸の製法