Bromobenzene → 4-Chlorobiphenyl

Participants

Reaction Steps

A mixture of 100 mmol of p-chlorophenylboronic acid (15.7 g), 98 mmol of bromobenzene (15.4 g), 110 mmol of anhydrous sodium carbonate (11.7 g), 0.1 mmol of trans-di-μ-acetato-bis[2-[bis(1,1-dimethylethyl)phosphino]-2 methylpropyl-C,P]dipalladium (0.2 mol %), 10 mmol of lithium chloride (0.43 g) and 100 ml of tetrahydrofuran was refluxed for 2.5 hours. After distilling off as much of the THF as possible under atmospheric pressure and replacing it by 100 ml of toluene, the mixture was hydrolyzed with 150 ml of water. The aqueous phase was extracted with a further 50 ml of toluene and the organic phase was washed with 50 ml of water. Distillation of the combined organic phases gave 4-chlorobiphehyl in a yield of 97% (based on bromobenzene).

Provenance & Evidence