Title:
METHOD OF PRODUCTION FOR 2-HALOGENATED BENZOIC ACIDS
Document Type and Number:
Japanese Patent JP2002338516
Kind Code:
A
Abstract:
To provide a method of production for 2-halogenated benzoic acids.
2-Halogenated benzoic acids of formula (I) are produced by reacting benzoic acids of formula (II) with a halogenating agent in the presence of a Pd catalyst. (A is -OH, -OM (M is an alkali metal), -N(R6)R7 (R6 and R7 are each H, a 1-6C alkyl group, a (substituted) phenyl group or the like), R is H, a 1-6C alkyl group, a 1-6C alkylcarbonyl group, a carboxy group, a 1-12C alkoxycarbonyl group, a (substituted) phenylcarbonyl group or the like, n is 0-4, X is Cl, Br, I, and (R)n optionally forms a 3-4C alkylene or a 3-4C alkenylene condensed ring by substituting adjacent C on the benzene ring).
Inventors:
KODAMA HIROYOSHI
SHIYOUHEI TAKESHI
NISHIDA TATSUKI
HINO TOMOKAZU
TSUBATA KENJI
SHIYOUHEI TAKESHI
NISHIDA TATSUKI
HINO TOMOKAZU
TSUBATA KENJI
Application Number:
JP2001134049A
Publication Date:
November 27, 2002
Filing Date:
May 01, 2001
Export Citation:
Assignee:
NIHON NOHYAKU CO LTD
International Classes:
B01J27/13; C07B39/00; C07B61/00; C07C51/363; C07C63/70; C07C67/307; C07C69/80; C07C231/12; C07C233/66; C07C237/22; C07C249/12; C07C251/38; C07C303/30; C07C309/66; C07C313/04; C07C315/04; C07D239/60; C07C319/20; C07C323/42; C07C323/44; C07D213/64; C07D213/643; C07D213/75; C07D239/34; B01J31/28; C07C233/65; C07C317/28; C07C317/40; C07C317/44; C07C323/41; C07C323/62; (IPC1-7): C07C51/363; C07C63/70; C07C67/307; C07C69/80; C07C231/12; C07C233/66; C07C237/22; C07C249/12; C07C251/38; C07C303/30; C07C309/66; C07C313/04; C07C319/20; C07C323/42; C07C323/44; C07D213/64; C07D213/75; C07D239/60
Domestic Patent References:
| JPH0551348A | 1993-03-02 |
Foreign References:
| GB1163236B |
Attorney, Agent or Firm:
Nobuo Kaida (2 outside)
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