反应详情

To 30 ml 48% HBr in a 50 ml round-bottom flask was added 1 gram (0.0033 mole) of tri(p-methoxyphenyl)phosphine. The homogeneous solution was heated to reflux (124° C.) under a stream of N2 (to remove CH3Br) and within 40 minutes a white precipitate formed. After 2 hours reflux, the mixture was filtered, washed with water, and vacuum dried to give 1.11 g (98%) tri(p-hydroxyphenyl)phosphine hydrobromide.

1. temperatureThe homogeneous solution was heated
2. customwithin 40 minutes a white precipitate formed
3. temperatureAfter 2 hours reflux
4. filtrationthe mixture was filtered
5. washwashed with water, and vacuum
6. customdried