2-Bromo-1-methyl-1H-imidazole → HCID 81675572, compound

Participants

Reaction Steps

Ethylmagnesium bromide (3 M in Et2O, 1.05 mL, 3.14 mmol) was added dropwise to a solution of 2-bromo-1-methyl-1H-imidazole (505 mg, 3.14 mmol) in DCM (6 mL) under a nitrogen atmosphere. The mixture was stirred at room temperature 30 min, then was cooled in an ice bath prior to addition of a solution of N-methoxy-N-methylpyrimidine-5-carboxamide (419 mg, 2.51 mmol, Intermediate 28, step a) in DCM (1 mL). The resulting suspension was stirred at room temperature for 24 hours. The reaction was quenched by addition of saturated aqueous NH4Cl, diluted with water, and extracted three times with DCM. The organic phase was dried (Na2SO4), filtered, and concentrated. The residue was purified by flash column chromatography (silica gel, gradient 0-60% CH3CN-DCM), affording the title compound.

Provenance & Evidence