Bulletin of the Chemical Society of Japan p. 336 - 338 (1991)
Update date:2022-08-17
Topics:
Kajigaeshi, Shoji
Morikawa, Yukihiro
Fujisaki, Shizuo
Kakinami, Takaaki
Nishihira, Keigo
The reaction of 1,4-benzenediols with 1.1 equiv of benzyltrimethylammonium tribromide in dichloromethane in the presence of aqueous sodium acetate at room temperature gave 2,5-cyclohexadiene-1,4-diones in good yields.On the other hand, the reaction of 1,4-benzenediols with a large excess of the reagent in aqueous acetic acid at 40-60 deg C gave polybromo-substituted 2,5-cyclohexadiene-1,4-diones in good yields.
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