7210-68-6Relevant academic research and scientific papers
Similarities and differences in the structures of 5-bromo-6-hydroxy-7,8- dimethylchroman-2-one and 6-hydroxy-7,8-dimethyl-5-nitrochroman-2-one
Goswami, Shailesh K.,Hanton, Lyall R.,McAdam, C. John,Moratti, Stephen C.,Simpson, Jim
, p. 407 - 411 (2013/07/11)
The title compounds, C11H11BrO3, (I), and C11H11NO5, (II), respectively, are derivatives of 6-hydroxy-5,7,8-trimethylchroman-2-one substituted at the 5-position by a Br atom in (I) and by a
Solid state redox chemistry of hydroquinones and quinones
Morey,Saa
, p. 105 - 112 (2007/10/02)
Solid state ceric ammonium nitrate (CAN) oxidation of hydroquinones to the corresponding quinones, gives best results when operating with ultrasonic irradiation. Nitrogen dioxide plays a key role in these 'solid-solid' oxidations. The oxidation of hydroquinones to quinones can also be achieved in a unique 'solid-solid-solid' reaction, i.e., by using a limited amount of CAN in the presence of a full equivalent of a solid cooxidant such as KBrO3. Reduction of quinones with sodium dithionite in the solid state gives rise to the corresponding highly colored quinhydrones and, eventually, to hydroquinones.
Oxidation Using Quaternary Ammonium Polyhalides. VIII. Oxidation of 1,4-Benzenediols with Benzyltrimethylammonium Tribromide
Kajigaeshi, Shoji,Morikawa, Yukihiro,Fujisaki, Shizuo,Kakinami, Takaaki,Nishihira, Keigo
, p. 336 - 338 (2007/10/02)
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.
