Dimethylformamide → HCID 86673556, compound

Participants

Reaction Steps

A mixture of the product from Example 4A (0.527 g, 2.04 mmol) and potassium 2-methylpropan-2-olate (0.299 g, 2.66 mmol) in THF (6 mL) was stirred for 1 h, and O-(diphenylphosphoryl)hydroxylamine (0.621 g, 2.66 mmol) and DMF (2 mL) were added, stirred at room temperature for 2 hours, diluted with EtOAc, washed with 1N NaOH and brine, dried (Na2SO4), filtered, and chromatographed (20-60% EtOAc/DCM) to give 235 mg of title compound as a white solid: 1H NMR (300 MHz, DMSO-d6) δ 8.67 (dd, J=2.4, 0.5, 1H), 8.38 (s, 1H), 8.14 (dd, J=8.2, 2.5, 1H), 8.02-7.82 (m, 2H), 7.81-7.65 (m, 2H), 6.54 (s, 2H).

Provenance & Evidence