Magnesium → HCID 178447760, compound

Participants

Reaction Steps

44.5 g (0.1 mol) of 4-(trans-4-(2-bromoethyl)cyclohexyl)-3'-fluoro-4'-trifluoromethoxybiphenyl was dripped into a mixture of 2.5 g (0.11 mol) of magnesium and 300 ml of THF to obtain a Grignard's reagent. This solution was then dripped into a 500 ml THF solution of 20.5 g (0.1 mol) of 1-chloro-1-n-pentyl-silacyclohexane. After a conventional after treatment, 4-(trans-4-(2-(trans-4-n-pentyl-4-silacyclohexyl)ethyl)cyclohexyl)-3'-fluoro-4'-trifluoromethoxybiphenyl was obtained. The silacyclohexane rings of the product were a mixture of trans isomers and cis isomers. They were separated by means of chromatography to obtain 44.9 g (yield 84.1%) of the trans isomer.

Provenance & Evidence