Bromomethylcyclopropane → 5-Bromo-1-(cyclopropylmethyl)-1,2-dihydropyridin-2-one

To a solution of 5-bromopyridin-2-ol (1.0 g, 5.75 mmol) in DMF (10 mL) at RT, potassium tert-butoxide (0.68 g, 6.07 mmol) was added and the mixture was stirred for 30 min. To this mixture, (bromomethyl)cyclopropane (1.03 g, 8.62 mmol) was added, and the resulting mixture was stirred at 70° C. for 2 h. The mixture was allowed to cool to RT, diluted with EtOAc (50 mL) and quenched with water (20 mL). The organic layer was washed with water (2×20 mL) and brine (20 mL), dried over anhydrous MgSO4 and filtered. The filtrate was concentrated in vacuo to afford 5-bromo-1-(cyclopropylmethyl)pyridin-2(1H)-one.

1. stirringthe resulting mixture was stirred at 70° C. for 2 h
2. customquenched with water (20 mL)
3. washThe organic layer was washed with water (2×20 mL) and brine (20 mL)
4. dry with materialdried over anhydrous MgSO4
5. filtrationfiltered
6. concentrationThe filtrate was concentrated in vacuo

ORD-Eintrag

ord-8da7c754576248148ca49936b4896902

Quelldatensatz

uspto-grants-2015_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09115141B2