1,2-Dichloroethane → Methyl 4-bromopyridine-3-carboxylate

Temperature

0 °C

To a solution of 4-bromonicotinic acid (16.8 g, 83.2 mmol, 1.0 eq.) in DCM (250 mL) at 0° C. was added DMAP (1.0 g, 8.2 mmol, 0.1 eq.). MeOH (2.7 g, 83.7 mmol, 1.0 eq.) was added dropwise with stirring at 0° C. EDC (16.8 g, 87.6 mmol, 1.1 eq.) was then added. The resulting solution was stirred for 3 hours at 0° C. The reaction was then quenched with water (100 mL). The resulting solution was extracted with DCM. The organic layer was washed with saturated aqueous NaCl (3×100 mL), dried over anhydrous Na2SO4 and concentrated under vacuum to yield 4-bromonicotinic acid methyl ester (8.2 g) as a yellow oil.

1. stirringThe resulting solution was stirred for 3 hours at 0° C
2. customThe reaction was then quenched with water (100 mL)
3. extractionThe resulting solution was extracted with DCM
4. washThe organic layer was washed with saturated aqueous NaCl (3×100 mL)
5. dry with materialdried over anhydrous Na2SO4
6. concentrationconcentrated under vacuum

ORD record

ord-f470028d5d6441e9b6ae71d1db79ec85

Source dataset

uspto-grants-2013_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08530663B2