Methyl iodide → HCID 86689835, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of tert-butyl 5-[(tert-butoxycarbonylamino)methyl]-pyrrolo-[3,2-b]pyridine-1-carboxylate (360.0 mg, 1.036 mmol) and iodomethane (0.065 mL, 1.036 mmol) in anhydrous THF (6.3 mL) cooled to −40° C. was added dropwise lithium bis(trimethylsilyl)amide in THF (1.24 mL, 1.24 mmol, 1M). The reaction mixture was warmed to 0° C. and stirred at 0° C. for 1 h. The reaction was quenched with water and then diluted with EtOAc. The organic layer was washed with water and brine, dried (Na2SO4), filtered, and concentrated in vacuo. The crude material was purified by SiO2 chromatography eluting with a mixture of EtOAc containing 1% TEA and heptane to afford 130.0 mg (37.3%) of tert-butyl 5-((tert-butoxycarbonyl(methyl)amino)methyl)-1H-pyrrolo[3,2-b]pyridine-1-carboxylate as a foam: 1H NMR (400 MHz, CDCl3) δ 8.33 (d, J=7.6 Hz, 1H), 7.82 (d, J=3.5 Hz, 1H), 7.27-7.10 (m, 1H), 6.73 (d, J=3.7 Hz, 1H), 4.64 (s, 2H), 3.02-2.82 (m, 3H), 1.68 (s, 9H), 1.56-1.41 (m, 9H); MS (ESI) m/z: 362.3 [M+1]+

Provenance & Evidence