Triethyl Phosphate → HCID 178447755, compound

Participants

Reaction Steps

27.7 g (0.1 mol) of trans-1-(2-bromoethyl)-4-n-pentyl-4-silacyclohexane 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 triethyl phosphate, 0.1 g of copper (I) iodide and 35.1 g (0.1 mol) of 4-(4-bromocyclohexyl)-2,4'-difluorobiphenyl. After a conventional after treatment, 4-(trans-4-(2-(trans-4-n-pentyl-4-silacyclohexyl)ethyl)cyclohexyl)-2,4'-difluorobiphenyl 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 13.1 g (yield 29.2%) of the trans isomer.

Provenance & Evidence