41877-18-3Relevant articles and documents
Reactions of 3-Isopropenyl- and 3-Acetyltropolone with Quarternary Ammonium Tribromides
Matsunaga, Yoichiro,Imafuku, Kimiaki
, p. 295 - 297 (1992)
Treatments of 3-isopropenyltropolone with quarternary ammonium tribromides in tetrahydrofuran afforded 3-methyl-8H-cycloheptafuran-8-one.The reactions in methanol-dichloromethane gave 7-bromo-3-methyl-8H-cycloheptafuran-8-one.Bromination of 3-acetyltropolone with the tribromides in tetrahydrofuran produces 3-(bromoacetyl)-tropolone, while the reaction in the methanolic solvent gave 7-bromo- and 5,7-dibromo-substituted 3-acetyltropolones.The brominations of 4'-hydroxyacetophenone were also carried out.