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Patent Searching and Data


Title:
PRODUCTION OF QUINONE, PHENOL, AND THEIR CARBOXYLIC ESTERS
Document Type and Number:
Japanese Patent JPH07258146
Kind Code:
A
Abstract:

PURPOSE: To obtain quinones in a high yield under mild reaction conditions using molecular oxygen as an easy-to-handle and safe oxidizing agent by carrying out the reaction between a naphthalene derivative and oxygen molecules in the presence of a specific complex and an aldehyde.

CONSTITUTION: The compound is obtained by carrying out the reaction of a naphthalene derivative of the formula I (R1-R8 are H, straight or branched alkyl or aryl) with molecular oxygen in the presence of a canadium (IV) complex of the formula II (R9-R11 are H, aryl, halogen) and an aldehyde of the formula: R12CHO (R12 is a straight or branched alkyl, an aryl or an alkenyl) such as crotonaldehyde. The reaction is preferably carried out in a solvent such as acetone at -30 to +50°C. In another case, the reaction is carried out in the presence of a peroxide such as peracetic acid and the vanadium (IV) complex to attain the practical reaction rate recommendably.


Inventors:
MUKOYAMA MITSUAKI
TAKAI TOSHIHIRO
HATA EIICHIRO
YAMADA TORU
Application Number:
JP4869694A
Publication Date:
October 09, 1995
Filing Date:
March 18, 1994
Export Citation:
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Assignee:
MITSUI PETROCHEMICAL IND
International Classes:
B01J31/22; C07B61/00; C07C37/58; C07C39/04; C07C46/02; C07C46/08; C07C50/10; C07C50/24; C07C50/32; C07C67/00; C07C69/157; (IPC1-7): C07C50/10; B01J31/22; C07C46/02; C07C50/24; C07C50/32; C07C69/157
Attorney, Agent or Firm:
Nobuto Watanabe (1 person outside)