Title:
PRODUCTION OF POLYVALENT METAL SALT OF BENZOIC ACID DERIVATIVE
Document Type and Number:
Japanese Patent JP3462895
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for efficiently producing a benzoic acid derivative polyvalent metal salt and its crystal useful an electron-receiving compound for memorizing materials.
CONSTITUTION: The alkali metal salt of a benzoic acid derivative of formula I (X1, X2 are H, halogen, alkyl, alkoxy, aralkyl, aryl, NO2; Y is O, S; R1 is H, alkyl, aralkyl, aryl; R2 is alkyl, alkenyl, aralkyl, aryl) is reacted with a polyvalent metal compound in an equivalent ratio of 1:0.8-1.5 in the presence of water at 0-50°C, preferably 10-40°C, and subsequently stirred preferably at 60-95°C to obtain the polyvalent metal salt of the compound of formula I. The amorphous product of the polyvalent metal salt can be converted into well handleable crystals by a thermal treatment (preferably 50-100°C) in the presence of water. The compound of formula I is obtained by reacting an aminobenzoic acid derivative of formula II with a compound of formula III (Z is halogen) in the presence of a base.
Inventors:
Atsuo Ohtsuji
Toshihiro Motoshima
▲来▼田 丈太郎
Masakatsu Nakatsuka
Toshihiro Motoshima
▲来▼田 丈太郎
Masakatsu Nakatsuka
Application Number:
JP27639493A
Publication Date:
November 05, 2003
Filing Date:
November 05, 1993
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
Yamamoto Kasei Co., Ltd.
Yamamoto Kasei Co., Ltd.
International Classes:
B41M5/333; B41M5/30; C07C231/12; C07C231/24; C07C233/54; C07C233/55; C07C233/81; C07C233/87; C07C235/24; C07C327/40; (IPC1-7): C07C231/12; C07C231/24; C07C233/54; C07C233/55; C07C233/81; C07C235/24
Domestic Patent References:
| JP52156830A |
Attorney, Agent or Firm:
Nobuyuki Kaneda (2 others)
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