(2-bromo-5-methoxyphenyl)methanamine

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 1-(2-bromo-5-methoxyphenyl)methanamine (3.2 mmol) in DCM (15 mL) was added BOC2O (3.2 mmol). The reaction mixture was allowed to stir at rt overnight and then concentrated. The residue was purified by column chromatography to give tert-butyl (2-bromo-5-methoxybenzyl)carbamate (3.1 mmol, 95%). concentrated The residue was purified by column chromatography

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 1-(2-bromo-5-methoxyphenyl)methanamine (3.6 g, 13 mmol) and 2,4,5-trichloropyrimidine (1.60 mL, 14 mmol) in N,N-dimethylformamide (41.3 mL) was added potassium carbonate (5.53 g, 40 mmol). The resulting mixture was stirred overnight at room temperature. The reaction was quenched with water. EtOAc was added and the layers were separated. The aqueous layer was extracted with EtOAc twice. The combined organic layers were washed with water and brine successively, then dried (Na2SO4), filtered, and concentrated to give the desired product as a light yellow gel (4.65 g, 96%). LCMS for C12H10BrCl2N3O (M+H)+: m/z=361.9, 363.9. The reaction was quenched with water EtOAc was added the layers were separated The aqueous layer was extracted with EtOAc twice The combined organic layers were washed with water and brine successively dried (Na2SO4) filtered concentrated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-Bromo-5-methoxybenzonitrile (10.0 g, 47.2 mmol) was dissolved in dry tetrahydrofuran (100 mL) in a flame-dried flask and cooled in an ice bath. A solution of borane in tetrahydrofuran (75 mL, 75 mmol, 1.0 M) was added dropwise over a period of 30 minutes. The reaction mixture was stirred overnight at rt, then quenched slowly with ice water and Na2CO3 (saturated aqueous solution). After removal of THF, the residue was extracted with large amounts of EtOAc three times. The combined organic layers were washed with water, dried, and concentrated to give the crude, which was purified by silica gel column chromatography to give the desired product as a white powder (3.65 g, 36%). LCMS for C8H10BrNO (M+H)+: m/z=216.9, 219.0. cooled in an ice bath quenched slowly with ice water and Na2CO3 (saturated aqueous solution) After removal of THF the residue was extracted with large amounts of EtOAc three times The combined organic layers were washed with water dried concentrated to give the crude, which was purified by silica gel column chromatography