反应详情

温度

70 °C

(1-Isopropyl-2,4-dimethyl-cyclohex-3-enyl)-methanol (165 g, 0.9 mol, obtained as detailed above) was dissolved in toluene with methanesulfonic acid (MSA, 5 g, 0.05 mol). The resulting solution was heated to 70° C. and aged at 70° C. for 2 hours. GC analysis showed the completion of cyclization. The reaction mixture was cooled to room temperature, washed with sodium carbonate solution, and distilled to provide 4-isopropyl-1,5-dimethyl-2-oxa-bicyclo[2.2.2]octane.

1. temperatureThe reaction mixture was cooled to room temperature
2. washwashed with sodium carbonate solution
3. distillationdistilled