Toluene → HCID 19107881, compound

Participants

Reaction Conditions

Reaction Steps

The compound (47) (130.1 g), p-toluenesulfonic acid (1.3 g), and toluene (500 ml) were mixed, and the mixture was heated under reflux for 2 hours while water being distilled was removed. The reaction mixture was cooled to 30° C., and then water (500 ml) and toluene (500 ml) were added, and mixed thereto. The mixture was allowed to stand until it had separated into organic and aqueous phases, and an extractive operation into an organic phase was carried out. The organic phase obtained was fractionated, washed with a saturated aqueous solution of sodium hydrogencarbonate and water, and then dried over anhydrous magnesium sulfate. The solution obtained was purified with a fractional operation by means of column chromatography using toluene as the eluent and silica gel as the stationary phase powder, and dried, giving 71.6 g of 4-butoxy-(2,3-difluorophenyl)cyclohexene (48). The compound (48) obtained was a colorless oil, having the boiling point at 131° C./3 mmHg to 132° C./3 mmHg, and the yield based on the compound (6) was 66.5%.

Provenance & Evidence