Title:
ジヒドロキシビアリール化合物の回収法
Document Type and Number:
Japanese Patent JP2007507501
Kind Code:
A
Abstract:
A method for preparing and isolating dihydroxybiaryl compounds, such as 4,4'-dihydroxybiphenyl, is disclosed. The alkali metal salt of the dihydroxybiaryl compound is protonated with the monohydroxyaryl halide compound initially used in the reductive coupling reaction which produced the alkali metal salt. In addition, the alkali metal salt of the monohydroxyaryl halide compound is produced by the process, which can then be recycled as the base and monohydroxyaryl halide in a further reductive coupling reaction to form the alkali metal salt of the dihydroxybiaryl compound.
Inventors:
Ofori, John You
Patel, Ben Purshotum
Pressman, Eric James
Patel, Ben Purshotum
Pressman, Eric James
Application Number:
JP2006533872A
Publication Date:
March 29, 2007
Filing Date:
September 02, 2004
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
C07C29/88; C07C29/32; C07C29/78; C07C37/00; C07C37/055; C07C37/18; C07C37/84; C07C39/15
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Hirokazu Ogura
Toshihisa Kurokawa