N-Iodosuccinimide → 2-bromo-7-iodo-5H-pyrrolo(2,3-b)pyrazine

Participants

Reaction Steps

To a solution of 2-Bromo-5H-pyrrolo[2,3-b]pyrazine (258 mg, 1.3 mmol) in acetone (5 ml) was added N-iodosuccinimide (324 mg, 1.44 mmol) in one portion. The reaction mixture was stirred at room temperature for 45 minutes. The resulting precipitate was filtered off, washed with a minimal amount of acetone, and dried in vacuum to give the title compound as a light brown solid 1H-NMR (500 MHz, d6-DMSO) δ 12.81 (s br, 1H), 8.40 (s, 1H), 8.19 (d, 3.0 Hz, 1H). MS: m/z 323.8/325.8 [MH+].

Provenance & Evidence