Dichloromethane → HCID 676779, compound

Temperature

24 °C

To an ice-cooled solution of 2-amino-6-bromopyridine (25.0 g, 0.144 mmol, 1 equiv) in dichloromethane (400 mL) was added ethoxycarbonyl isothiocyanate (19.9 g, 0.152 mmol, 1.05 equiv) dropwise. The reaction mixture was warmed to 24° C. After 21 h, the reaction mixture was concentrated in vacuo (˜20 mm Hg). The residue was diluted with ethyl acetate (600 mL), and the resulting organic solution was washed sequentially with water (2×200 mL) and saturated aqueous sodium chloride solution (200 mL). The organic was dried over magnesium sulfate, filtered, and concentrated to afford product as a yellow solid (43.7 g).

1. concentrationthe reaction mixture was concentrated in vacuo (˜20 mm Hg)
2. additionThe residue was diluted with ethyl acetate (600 mL)
3. washthe resulting organic solution was washed sequentially with water (2×200 mL) and saturated aqueous sodium chloride solution (200 mL)
4. dry with materialThe organic was dried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated

ORD record

ord-3ff5b1e31401482e9dd1a643e7507641

Source dataset

uspto-grants-2014_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08889673B2