Water → 4-Chloro-2-iodophenol

Temperature

20 °C

Boron tribromide (1349 g) was added to a solution of 4-chloro-2-iodoanisole (1025 g) in dichloromethane (10.3 L) under nitrogen at such a rate that the temperature remained at 0-5° C. The solution was then warmed to 20° C. and stirred for c. 19 h until the reaction was complete by HPLC. This organic solution was added to water (8.2 L) and the mixture was cooled to 5° C. to 10° C. DCM (770 ml) was added and the resulting biphasic mixture was then stirred at 5° C. for 15 min before being warmed to 22° C. and then finally stirred at 22° C. for 20 min before separating the phases. The separated organic phase was washed with aqueous saturated sodium bicarbonate (3.1 L), water (3.1 L) and then evaporated on a Buchi to give the title compound. (963.6 g)

1. customremained at 0-5° C
2. custom19 h
3. temperaturethe mixture was cooled to 5° C. to 10° C
4. stirringthe resulting biphasic mixture was then stirred at 5° C. for 15 min
5. temperaturebefore being warmed to 22° C.
6. stirringfinally stirred at 22° C. for 20 min
7. custombefore separating the phases
8. washThe separated organic phase was washed with aqueous saturated sodium bicarbonate (3.1 L), water (3.1 L)
9. customevaporated on a Buchi

ORD record

ord-7dba6a08c6f341b0a524b87e9553c77b

Source dataset

uspto-grants-2010_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07759369B2