Methanol → beta-Bromostyrene

Participants

Reaction Steps

A quantity of 2 g of di-tertbutyl peroxide was dissolved in 100g of β-bromoethyl bromobenzene and the solution was added through a motor-driven syringe into the reactor at a rate of 60g/h, together with 25 g of methanol and with nitrogen which was passed in at a rate of 2 l/h. The reactor used in this example was a glass spiral made of 6 mm wide and 5 m long tube heated to 300°-320°C. The products were collected in a trap immersed in an ice bath while the methyl bromide was trapped in a container positioned in liquid nitrogen. The liquid products were then subjected to fractional distillation under vacuum. There were obtained 58 g bromostyrene and 12 g unconverted reactant. The yield was 95% bromostyrene.

Provenance & Evidence