Water → 6-(benzylsulfanyl)-3-hydroxypyridin-2(1H)-one

Temperature

0 °C

To a solution of 6-(benzylsulfanyl)-2,3-dimethoxypyridine (Intermediate 44, 0.2 g, 0.76 mmol) in dichloromethane (1 ml) was added a solution of boron tribromide in dichloromethane (1 M, 0.77 g, 3.1 mmol) at −5° C. and reaction was stirred for 1 hour at 0° C. The temperature was gradually allowed to rise to room temperature before the mixture was stirred for a further 1 hour at room temperature. Upon cooling to 0° C. water (10 ml) was added drop-wise and the resulting mixture was filtered and the solid was washed with water (2 ml) followed by ethyl acetate (5 ml) and dried under vacuum at 40° C. to yield 6-(benzylsulfanyl)-3-hydroxypyridin-2(1H)-one (35 mg, 20%).

1. customreaction
2. customto rise to room temperature before the mixture
3. stirringwas stirred for a further 1 hour at room temperature
4. additionwas added drop-wise
5. filtrationthe resulting mixture was filtered
6. washthe solid was washed with water (2 ml)
7. customdried under vacuum at 40° C.

ORD record

ord-6ac72b2029bb4c528558da00cd25ba62

Source dataset

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09180122B2