Bromine → HCID 68639473, compound

Participants

Reaction Steps

Br2 (1.0 eq.) was added, dropwise, to a solution of (A2) in DCM/AcOH=1:1 (0.05 M) at RT and the reaction mixture was stirred at RT for 2 h. The reaction mixture was quenched by the addition of sat. aq. NaHCO3. The aqueous phase was separated and extracted several times with DCM. The combined organic extracts were washed with brine and dried (Na2SO4). Evaporation of the solvent gave a residue which was purified by flash column chromatography on silica using a gradient of EtOAc/Petroleum ether from 30:70 to 50:50 to yield (88%) the title compound as a white solid. 1H NMR (400 MHz, DMSO-d6, 300K) δ 8.24 (2H, d, J=8.4 Hz), 8.00 (2H, d, J=8.6 Hz), 7.93 (1H, d, J=8.6 Hz), 7.55-7.45 (2H, m), 4.02 (3H, s). MS (ES+) C16H10BrN3O2 requires: 355/357, found: 356/358 (M+H)+.

Provenance & Evidence