Morpholine → 6-bromo-3-[(morpholin-4-yl)carbonyl]-1H-indazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 6-bromo-1H-indazole-3-carboxylic acid (500 mg, 2.07 mmol) in DMF (10 mL) was added CDI (403.62 mg, 2.49 mmol) and the reaction mixture stirred at 45° C. for 40 minutes. Morpholine (0.36 ml, 4.16 mmol) was then added and the reaction mixture stirred at RT. The reaction mixture was quenched by diluting with water. The product was extracted into EtOAc (×2) and the combined organic extracts were then washed with water and brine and dried (Na2SO4), filtered and concentrated in vacuo to give the crude (78% pure) title compound: 1H NMR (500 MHz, DMSO) delta 3.58-3.79 (6H, m), 3.96-4.13 (2H, m), 7.36 (1H, dd, J=8.59, 1.66 Hz), 7.86 (1H, d, J=1.10 Hz), 7.93 (1H, s), 13.66 (1H, br. s.); LC-MS: m/z=+311.70 (M+H)+.

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