Potassium Carbonate → 2-Amino-5-bromobenzenemethanol

온도

0 °C

In THF (350 ml) was dissolved 5-bromoanthranilic acid (40.06 g), and the mixture was cooled to 0° C. To the mixture was added dropwise a solution of 10.0M borane dimethylsulfide in THF (54.5 ml), and the mixture was stirred at room temperature for 4.5 hours. The mixture was cooled to 0° C., and to the mixture was added dropwise 3N sodium hydroxide solution. The mixture was stirred at room temperature overnight, and to the mixture was added granulated sodium hydroxide to adjust the mixture to pH 11. The aqueous layer was saturated with potassium carbonate, and the THF layer was separated. The aqueous layer was extracted with ether (100 ml×5). The organic layers were combined and dried with magnesium sulfate. The solvent was evaporated under reduced pressure to give (2-amino-5-bromophenyl)methanol (36.66 g, 100%).

1. temperatureThe mixture was cooled to 0° C.
2. stirringThe mixture was stirred at room temperature overnight
3. additionto the mixture was added
4. customthe THF layer was separated
5. extractionThe aqueous layer was extracted with ether (100 ml×5)
6. dry with materialdried with magnesium sulfate
7. customThe solvent was evaporated under reduced pressure

ORD 기록

ord-fcbadb8ff6c24675b5fd143234943411

출처 데이터셋

uspto-grants-2001_01

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US06172061B2