Reacción #568998

Ecuación de reacción

hydrochloric acid

6-chloro-6H-dibenz[c,e][1,2]-oxaphosphorine

1-naphthylmagnesium bromide

water

→

colorless oil

Rendimiento 69.7%

2'-hydroxy-2-[bis(1-naphthyl)phosphino]-biphenyl

Rendimiento 69.7%

Disolventes

o-xylene

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaThe temperature increases in the course of this from 25° to 45° C
2. 2
   workup.STIRRINGThe mixture is then stirred for 3 hours at 80° C. and 5 hours at 120° C
3. 3
   Otrothe organic phase is separated off
4. 4
   Secadodried with sodium sulfate
5. 5
   Concentraciónconcentrated under reduced pressure

Procedimiento

14.1 g (60 mmol) of 6-chloro-6H-dibenz[c,e][1,2]-oxaphosphorine in 50 ml of anhydrous o-xylene are introduced, in an argon atmosphere with stirring, and a solution of 150 mmol of 1-naphthylmagnesium bromide in tetrahydrofuran is added dropwise. The temperature increases in the course of this from 25° to 45° C. The mixture is then stirred for 3 hours at 80° C. and 5 hours at 120° C. The mixture is cooled to room temperature and 100 ml of water are added. The mixture is neutralized with dilute hydrochloric acid, the organic phase is separated off, dried with sodium sulfate and concentrated under reduced pressure. 19.0 g of colorless oil are obtained. By crystallization with methanol/water, 10:1, 22.8 g (89%) of colorless crystals having melting point 255° to 256° C. are obtained.

Fuente