P-Anisidine → HCID 86706286, compound

Participants

Reaction Conditions

Reaction Steps

To tert-butyl 6-bromo-2-(1-(tert-butoxycarbonyl)-1H-pyrazol-4-yl)-1H-pyrrolo[3,2-c]pyridine-1-carboxylate (10) (50 mg, 0.108 mmole) was added 4-methoxyaniline (16 mg, 0.129 mmole, 1.2 eq) followed by cesium carbonate (70 mg, 0.216 mmole, 2 eq) and Xantphos (6.2 mg, 0.0108 mmole, 10 mole %). Dioxane (1.2 mL) was added and the flask flushed twice with nitrogen. Pd2(dba)3 complex (5 mg, 0.0054 mmole, 5 mole %) was added and the flask was flushed again with nitrogen (×3) and heated at 80° C. for 2 hours. The reaction was cooled and diluted with ethyl acetate (10 mL). The solution was washed with water (3 mL) and with brine, dried and evaporated to leave a gum. This was applied in chloroform to a 1 mm, 20×20 cm silica prep plate which was eluted with 9:1 dichloromethane:ethyl acetate. The product band was recovered with acetone. Solution evaporated and residue azeotroped with ethanol to leave the title compound (37 mg, 68%). 1H-NMR (d6-DMSO, 500 MHz): δ 1.45 (s, 9H), 1.60 (s, 9H), 3.72 (s, 3H), 6.78 (d, J=0.63 Hz, 1H), 6.87 (d, J=9.14 Hz, 2H), 7.39 (t, J=0.95 Hz, 1H), 7.48 (d, J=9.14 Hz, 2H), 8.02 (d, J=0.63 Hz, 1H), 8.41 (d, J=0.95 Hz, 1H), 8.43 (d, J=0.63 Hz, 1H), 8.73 (br s, 1H).

Provenance & Evidence