Syntheses in the Isocamphane Series, XXXIX. Improvement of the Diels-Alder Reaction of Cyclopentadiene with Mesityloxide by means of Ultrasound and a New Synthesis of Dehydrocamphene

Article abstract of DOI:10.1007/BF00812706

The synthesis of the valuable terpenic synthon 2-acetyl-3,3-dimethylbicyclo<2.2.1>hept-5-ene is clearly improved concerning the yield and especially the reaction time by applying ultrasound on the Diels-Alder reaction of cyclopentadiene with mesityl oxide.A new synthesis of dehydrocamphene and its odour impression is described. - Keywords: 2-Acetyl-3,3-dimethylbicyclo<2.2.1>hept-5-ene; Camphene; 5,5-Dimethyl-6-methylenebicyclo<2.2.1>hept-2-ene; Isocamphane derivatives; Isocamphodiene; Norborn-5-ene derivatives; Odour; Sonification; Ultrasound chemistry.