Water → HCID 178455713, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 480 mg of 1-[trans-4-(2,2-dibromovinyl)cyclohexyl]-4-pentylbenzene in 60 ml of absolute tetrahydrofuran was placed at -78° C. in a sulphonation flask under argon gasification and treated within 3 minutes with 3.2 ml of a 0.1N solution of butyl lithium in hexane. After completion of the addition, the mixture was stirred at -78° C. for a further 2.5 hours, then poured into 150 ml of water and extracted three times with 150 ml of petroleum ether each time. The organic phases were washed with 100 ml of water, dried over magnesium sulphate and concentrated. Low-pressure chromatography (0.5 bar) of the residue (310 mg) on silica gel with hexane gave 255 mg (83.5%) of 1-(trans-4-ethynylcyclohexyl)-4-pentylbenzene as a colourless oil (purity 95.9%).

Provenance & Evidence