反应详情

温度

50 °C

A mixture of 6,6-diethyl-fulvene (prepared as described in J. Org. Chem., 1990, 55, 3395; 86.0 g, 0.64 mol) and methyl-vinyl-ketone (44.9 g, 0.64 mol) was stirred for 5 h at 50° C. The mixture was cooled to room temperature and diluted with toluene/hexane (1/9, 600 ml). The solution was hydrogenated at normal pressure using palladium on charcoal (10%) as a catalyst. After 5 h the mixture was filtered, concentrated in vacuo and the residue was distilled (bp. 70° C./0.01 Torr) to yield the title compound (65.5 g, 50%) as a mixture of 2 isomers in a ratio of 3:1. Odor description: Woody, floral, Vertofix, Lilial, ambery.

1. temperatureThe mixture was cooled to room temperature
2. filtrationAfter 5 h the mixture was filtered
3. concentrationconcentrated in vacuo
4. distillationthe residue was distilled (bp. 70° C./0.01 Torr)