Borane;tetrahydrofuran → [(3-Bromo-4-fluorophenyl)methyl](methyl)amine

Temperature

80 °C

To a solution of 1,1-dimethylethyl [(3-bromo-4-fluorophenyl)methyl]carbamate (0.755 g, 2.48 mmol) in THF (1 mL) was added BH3.THF (12.5 mL, 1.0 M in THF). The mixture was heated with a microwave at 80° C. for 30 min twice. The reaction was then quenched with HCl (10 mL, 1 N) slowly, after which the mixture was stirred for 2 h at room temperature, basified with NaHCO3 to pH ˜9, and extracted with EtOAc (50+20 mL). The combined organic phases were washed with brine, dried over Na2SO4, filtered, concentrated to afford the title compound 0.52 g (96%). LC-MS m/z 218 (M+H)+.

1. customThe reaction was then quenched with HCl (10 mL, 1 N) slowly
2. extractionextracted with EtOAc (50+20 mL)
3. washThe combined organic phases were washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated

ORD record

ord-19f0365e911e467fa7920bcf204feaf9

Source dataset

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08067408B2