Magnesium → HCID 178447763, compound

Participants

Reaction Steps

36.0 g (0.1 mol) of 4-(2-(trans-4-n-pentyl-4-silacyclohexyl)ethyl)cyclohexyl bromide 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 0.5 g of tetrakis triphenylphosphine palladium and 87.1 g (0.1 mol) of 4-bromo-2,6,3',5'-tetrafluoro-4'-difluoromethoxybiphenyl. After a conventional after treatment, 4-(trans-4-(2-(trans-4-n-pentyl-4-silacyclohexyl)ethyl)cyclohexyl)-2,6,3',5'-tetrafluoro-4'-difluoromethoxybiphenyl 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 40.0 g (yield 70.1%) of the trans isomer.

Provenance & Evidence