Title:
【発明の名称】相間移動触媒を用いたオキシビスフタル酸系化合物の製造方法
Document Type and Number:
Japanese Patent JP2002532486
Kind Code:
A
Abstract:
Oxybisphthalic compounds such as 4,4'-oxybis(N-methylphthalimide) and 4,4'-oxybis(phthalic anhydride) are prepared from the corresponding nitro- or halo-substituted phthalic compounds by reaction with an alkanoate or carbonate salt in a non-polar solvent and in the presence of a hexaalkylguanidinium salt as phase transfer catalyst. A carboxylic acid such as 4-chlorobenzoic acid may be used as an additional catalyst. Reaction rates and yields are higher than with other phase transfer catalysts.
Inventors:
Brunel, Daniel Joseph
Guggenheim, Thomas Link
Guggenheim, Thomas Link
Application Number:
JP2000588158A
Publication Date:
October 02, 2002
Filing Date:
October 18, 1999
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B01J31/02; B01J31/04; C07B61/00; C07D209/48; C07D307/89; (IPC1-7): C07D209/48; B01J31/02; B01J31/04; C07D307/89
Attorney, Agent or Firm:
Kenichi Matsumoto