2-Amino-3,5-dibromopyrazine → 6-Bromo-N2-((tetrahydro-2H-pyran-4-yl)methyl)pyrazine-2,3-diamine

Participants

Reaction Conditions

Reaction Steps

To a scintillation vial containing 3,5-dibromopyrazin-2-amine (500 mg, 1.977 mmol) and TEA (0.551 ml, 3.95 mmol) was added MeCN (6 ml) and (tetrahydro-2H-pyran-4-yl)methanamine (300 mg, 1.977 mmol). The homogenous reaction mixture was capped and heated to 80° C. in a oil bath for 36 hr. The reaction mixture was concentrated to dryness, diluted with EtOAc and washed with sat NaHCO3, sat NaCl. The organic layer was dried Na2SO4, filtered and concentrated. The crude was purified by column chromatography on silica gel (30% EtOAc/Hexane) to yield 6-bromo-N2-((tetrahydro-2H-pyran-4-yl)methyl)pyrazine-2,3-diamine (351 mg, 1.222 mmol, 61.8% yield).

Provenance & Evidence