Reaktion #543620

Reaktionsgleichung

2-Chloro-6-fluoro anisole

BBr3

→

product

Ausbeute 100.8%

2-Chloro-6-fluoro phenol

Ausbeute 100.8%

Lösungsmittel

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction was warmed
2. 2
   workup.ADDITIONpoured over ice
3. 3
   Sonstigeto quench
4. 4
   SonstigeThe material was partitioned between water and DCM (500 mL each)
5. 5
   ExtraktionThe aqueous layer was back extracted with DCM (200 mL)
6. 6
   Trocknenthe combined organics were dried (NaSO4)
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated

Vorschrift

2-Chloro-6-fluoro anisole (5 g, 31.13 mmol) was dissolved in DCM (300 mL) and cooled to about −78° C. To the solution was added BBr3 (7.35 mL, 77.8 mmol) in one portion. The reaction was warmed to r.t, stirred for about 16 hours and poured over ice to quench remaining BBr3. The material was partitioned between water and DCM (500 mL each). The aqueous layer was back extracted with DCM (200 mL), and the combined organics were dried (NaSO4), filtered and concentrated to give the product (4.60 g) as a dark oil.

Quelle