Dimethylformamide → HCID 22457529, compound

Potassium 3-(2-acetoxy-ethyl)-4-bromo-naphthalene-1-sulfonate (17.75 g, 43.2 mmol) was added at room temperature to a stirred solution of N,N-dimethylformamide (0.334 mL, 4.31 mmol) in thionyl chloride (63 mL, 863 mmol). The resulting mixture was placed in an oil bath at 70° C. and stirred. After 10 minutes, additional thionyl chloride (20 mL) was added to facilitate stirring. After 40 minutes at 70°, the reaction flask was fitted with a distillation head and excess thionyl chloride was removed under vacuum. The residual brown solid was mixed with diethyl ether (300 mL) and added to an ice-cold, stirred mixture of water (100 mL) and ether (100 mL). The organic phase was separated, washed with water (200 mL) and brine (100 mL), dried over magnesium sulfate, filtered, and evaporated under vacuum to afford the title compound (14.63 g).

1. customThe resulting mixture was placed in an oil bath at 70° C.
2. stirringto facilitate stirring
3. waitAfter 40 minutes at 70°
4. customwas removed under vacuum
5. additionThe residual brown solid was mixed with diethyl ether (300 mL)
6. additionadded to an ice-cold
7. stirringstirred
8. additionmixture of water (100 mL) and ether (100 mL)
9. customThe organic phase was separated
10. washwashed with water (200 mL) and brine (100 mL)
11. dry with materialdried over magnesium sulfate
12. filtrationfiltered
13. customevaporated under vacuum

ORD record

ord-8ee56c40b8c74637b68b2f666365cda8

Source dataset

uspto-grants-1999_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05994345