1-Bromopentane → HCID 178447726, compound

Participants

Reaction Steps

3.0 g (20 mmol) of n-pentyl bromide was dripped into a mixture of 0.5 g of magnesium (21 mmol) and 50 ml of THF to obtain a Grignard's reagent. This solution was then dripped into a 50 ml THF solution of 7.5 g (20 mmol) of 4'-(4-methoxy-4-silacyclohexyl)-2,2'-difluoro-4-propoxybiphenyl to obtain 4'-(trans-4-n-pentyl-4-silacyclohexyl)-2, 2'-difluoro-4-propoxybiphenyl. The silacyclohexane rings of this product were a mixture of trans and cis isomers. They were separated by means of chromatography to obtain 7.1 g of the trans isomer (yield 86%).

Provenance & Evidence