Title:
フタリドの製法
Document Type and Number:
Japanese Patent JP3946260
Kind Code:
B2
Abstract:
PCT No. PCT/EP97/02185 Sec. 371 Date Aug. 10, 1998 Sec. 102(e) Date Aug. 10, 1998 PCT Filed Apr. 28, 1997 PCT Pub. No. WO97/43464 PCT Pub. Date Nov. 20, 1997A process is disclosed for preparing phthalides by cathodic reduction of phthalic acid or phthalic acid derivatives, in which the carboxylic acid units may be substituted by units which can be derived by a condensation reaction from carboxylic acid units and in which one or several hydrogen atoms of the o-phenylene unit of the phthalic acid may be substituted by inert radicals. This process is characterised in that the reduction is carried out in an organic solvent which contains less than 50 wt % water and in a non-divided electrolytic cell.
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Inventors:
Hermann Putter
Heinz Hannebaum
Heinz Hannebaum
Application Number:
JP54044397A
Publication Date:
July 18, 2007
Filing Date:
April 28, 1997
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07D307/88; C25B3/25
Domestic Patent References:
| JP2197589A | ||||
| JP3190838A | ||||
| JP7206843A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel