反应详情

温度

-10 °C

57.0 g of 4-propylcyclohexanone and 25.0 g of triphenyl[2-(4-propylidenecyclohexyl)ethyl]phosphonium bromide were introduced into 150 ml of THF under nitrogen, and the mixture was cooled to -10° C. A solution of 5.61 g of potassium tert-butoxide in 100 ml of THF was then added dropwise with stirring, and the mixture was stirred at RT for a further 2 h. Conventional work-up gave 4-[2-(4-propylcyclohexylidene)ethyl]propylidenecyclohexane.

1. stirringthe mixture was stirred at RT for a further 2 h