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Silver Ion-Assisted Ring Expansions in Different Solvent Systems
Carbene bicyclic compound ring opening ring expansion vinylic halide
2010/4/9
Several ring expansion products carrying vinylic bromo functionality were synthesized by opening of the geminal dibromobicyclo[n.1.0]alkanes ring. Dibromocarbene was formed from bromoform and potassiu...
Preparation of 1,5-Diketones by Addition of Cyclohexanone to Chalcones under Solvent-free Phase Transfer Catalyst Condition
Chalcones 1,5-Diketones Solvent-free Phase Transfer Catalyst Michael Addition
2010/4/16
Eight different chalcone-1,5-diketone derivatives (5a-h) were prepared by the reaction of chalcone derivatives (3a-h) with cyclohexanone under the solvent-free phase transfer catalyst condition with m...