Triethylamine → HCID 66764082, compound

Participants

Reaction Steps

(Trimethylsilyl)acetylene (168.1 mg, 241.9 μL, 1.711 mmol) was added dropwise to a stirred solution of 7-iodo-2-(4-isopropylsulfonylphenyl)-5-(p-tolylsulfonyl)pyrrolo[2,3-b]pyrazine (765 mg, 1.316 mmol), triethylamine (665.8 mg, 917.1 μL, 6.580 mmol), copper(I) iodide (30.07 mg, 0.1579 mmol) and Pd(PPh3)4 (76.04 mg, 0.06580 mmol) in DMF (7 mL) at 0° C. and the resulting solution allowed to warm to ambient temperature over 64 hours. The solution was added dropwise to a mixture of EtOAc/ice water and the layers separated. The organic layer was washed with brine (×2), dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by column chromatography (ISCO Companion™, 40 g column, eluting with 2 to 20% EtOAc/DCM, loaded in DCM) to give the sub-title product as a beige solid (410.4 mg, 56% Yield). 1H NMR (400.0 MHz, DMSO) δ 0.17 (t, 9H), 1.07 (d, 6H), 2.38 (qn, 3H), 3.45-3.50 (m, 1H), 7.36 (d, 2H), 7.90 (d, 2H), 7.96 (d, 2H), 8.27 (d, 2H), 8.60 (s, 1H) and 9.08 (s, 1H) ppm; MS (ES+) 552.0.

Provenance & Evidence