Triethyl Phosphate → HCID 19602027, compound

Participants

Reaction Steps

26.1 g (0.1 mol) of trans-1-(2-bromoethyl)-4-n-pentylcyclohexane 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 40.7 g (0.1 mol) of 4-(4-chloro-4-silacyclohexyl)3',5'-difluoro-4'-trifluoromethoxybiphenyl. After a conventional after treatment, 4-(2-(trans-4-n-pentylcyclohexyl)ethyl)-4-silacyclohexyl)-3',5'-difluoro-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 44.3 g (yield 90.1%) of the trans isomer.

Provenance & Evidence