反应详情

温度

0 °C

2 equivalents (0.08 mol) of t-butyllithium in pentane are added over the course of one hour at 0° C. to a solution of 8 g (0.04 mol) of bromomesitylene in 100 ml of hexane. The mixture is refluxed for 3 hours. After cooling to 0° C., a solution of 4.17 g (0.01 mol) of 1,4-bis(dibromoboryl)benzene in 80 ml of hexan is added to the mixture and the batch is refluxed overnight. The thick suspension produced is poured into 200 ml of water and subjected twice to extraction with 50 ml of hexane. The combined organic phases are dried over magnesium sulphate, filtered and concentrated. A yellow solid is formed which is recrystallized from hexane, giving 3.0 g (52% of theory) of 1,4-bis(dimesitylboryl)benzene.

1. temperatureThe mixture is refluxed for 3 hours
2. temperaturethe batch is refluxed overnight
3. customThe thick suspension produced
4. extractionsubjected twice to extraction with 50 ml of hexane
5. dry with materialThe combined organic phases are dried over magnesium sulphate
6. filtrationfiltered
7. concentrationconcentrated
8. customA yellow solid is formed which
9. customis recrystallized from hexane