Title:
PRODUCTION OF 2-METHYL-1,4-NAPHTHOQUINONE
Document Type and Number:
Japanese Patent JP3449800
Kind Code:
B2
Abstract:
PURPOSE: To obtain the compound, having hemostatic actions in bleeding animal bodies and useful as medicines, etc., for human bodies by oxidizing a specific methylnaphthalene with an oxidizing agent such as hydrogen peroxide.
CONSTITUTION: This method for producing 2-methyl-1,4-naphthoquinone is to react (A) 2-methylnaphthalene with (D) hydrogen peroxide [preferably in an amount of 1-4mol based on 1mol component (A)] and/or an organic peracid in the presence of (C) a palladium compound (preferably a palladium compound soluble in the reactional system, e.g. palladium acetate) and sulfuric acid in an amount of 5-100g based on 1l of (B) a solvent containing a carboxylic acid (preferably a ≤8C saturated aliphatic carboxylic acid, e.g. acetic acid) in the solvent of the component (B), e.g. at 40-90°C temperature for about 5min to 8hr.
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Inventors:
Youichi Matsumoto
Kouzou Nakao
Kouzou Nakao
Application Number:
JP25754594A
Publication Date:
September 22, 2003
Filing Date:
September 27, 1994
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
B01J27/053; B01J31/04; C07B61/00; C07C46/04; C07C50/10; (IPC1-7): C07C46/04; C07C50/10
Domestic Patent References:
| JP61227548A | ||||
| JP5350147A |