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Title:
PRODUCTION OF P-QUINONE
Document Type and Number:
Japanese Patent JP3348456
Kind Code:
B2
Abstract:

PURPOSE: To industrially easily obtain the subject compound in good yield by reacting a t-butyldioxy-cyclohexadiene-one compound having a specific structure with a titanium halide compound.
CONSTITUTION: A 4-t-butyldioxy-2,5-cyclohexadiene-1-one compound of formula I (R is alkyl, phenyl; R1-R3 are H, 1-6C alkyl) (e.g. 4-t-butyldioxy-4-methyl-2,5- cyclohexadiene-1-one) is reacted with a titanium halide compound (e.g. titanium tetrachloride) usually in a solvent such as dichloromethane to produce the objective compound of formula II. The raw material compound of formula I is preferably obtained by a method comprising reacting a compound of formula III such as p-cresol with t-butylhydroxyperoxide in the presence of a ruthenium catalyst.


Inventors:
Shunichi Murahashi
Ken Naota
Application Number:
JP5203093A
Publication Date:
November 20, 2002
Filing Date:
March 12, 1993
Export Citation:
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Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
C07B61/00; C07C46/00; C07C50/02; (IPC1-7): C07C46/00; C07C50/02
Domestic Patent References:
JP62120337A
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)