反应详情

In this example, 350.0 g of triphenylphosphine and 270.0 g of dibromopropane are suspended in 700 ml of toluene and the suspension is heated at reflux for 25 hours. After allowing the suspension to stand for cooling, the formed product is separated by filtration and washed with 2 l of toluene to obtain 550.0 g of (3-bromopropyl)-triphenylphosphonium bromide hydrobromide having m.p. 233-234° C.

1. temperaturethe suspension is heated
2. temperatureat reflux for 25 hours
3. temperaturefor cooling
4. customthe formed product is separated by filtration
5. washwashed with 2 l of toluene