反应详情

A vessel was charged with 1 mole of allyl 1-(2-pentynyl)-2-oxocyclopentanecarboxylate of the following formula ##STR5## 20 moles of acetonitrile and 0.01 mole of palladium acetate. At room temperature, they were rapidly stirred. The mixture was then heated to the boiling point of the solvent, and the reaction was carried out under reflux for 30 minutes. After the reaction, the reaction mixture was distilled under reduced pressure in a customary manner to give 2-(2-pentynyl)-2-cyclopenten-1-one (PCP for short) in a yield of 85%. This compound was identified by using its IR, NMR and mass spectra.

1. temperatureThe mixture was then heated to the boiling point of the solvent
2. temperatureunder reflux for 30 minutes
3. customAfter the reaction
4. distillationthe reaction mixture was distilled under reduced pressure in a customary manner