Sodium Chloride → HCID 22989708, compound

Under a nitrogen atmosphere, a solution of 3-hydroxy-2-methylpyridine (2.00 g, 18.3 mmol) in N,N-dimethylformamide (DMF) (10 mL) was added drop-wise over 5 min to a cold (0-5° C.), stirring slurry of sodium hydride (0.576 g of an 80% dispersion in mineral oil, 19.2 mmol) in DMF (40 mL). The mixture was allowed to stir and warm to ambient temperature over 1 h. The slurry was cooled to 0-5° C., and 1-chloro-3-iodopropane (4.49 g, 22.0 mmol) was added drop-wise over 5 min. The resulting dark-brown mixture was stirred at ambient temperature for 2 h. Cold water (25 mL) was added, followed by saturated NaCl solution (25 mL), and the mixture was extracted with ether (4×100 mL). The combined ether extracts were dried (Na2SO4), filtered, and concentrated by rotary evaporation to a residue that was dried briefly under high vacuum to give 3.25 g (96.2%) of an oil.

1. temperatureThe slurry was cooled to 0-5° C.
2. stirringThe resulting dark-brown mixture was stirred at ambient temperature for 2 h
3. extractionthe mixture was extracted with ether (4×100 mL)
4. dry with materialThe combined ether extracts were dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated by rotary evaporation to a residue that
7. customwas dried briefly under high vacuum

ORD record

ord-26924bb69e1b43f0a31a6e79d34e3de9

Source dataset

uspto-grants-2003_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06627648B1