Tetrahydrofuran → HCID 178444456, compound

Participants

Reaction Steps

28.9 g (0.1 mol) of trans-4-(4-bromobutyl)-1-n-pentylcyclohexane was dropped in a mixture of 2.5 g (0.11 mols) of magnesium and 300 ml of THF to obtain a Grignard reagent. The resultant solution was then dropped in a solution, in 500 ml of THF, of 29.5 g (0.1 mol) of 4-(trans-4-chloro-4-silacyclohexyl)-2-fluoro-1-difluoromethoxybenzene. The resultant product consisted of a mixture of trans and cis isomers with respect to the cyclohexane ring. The product was subjected to ordinary aftertreatments to obtain trans-4-(4-(trans-4-(3-fluoro-4-difluoromethoxyphenyl)-1-silacyclohexyl)butyl)-1-n-pentylcyclohexane, followed by isolation through chromatography to obtain 41.8 g (yield: 89%) of the intended trans isomer product.

Provenance & Evidence