Dimethylformamide → HCID 18175216, compound

Participants

Reaction Conditions

Reaction Steps

6-(2′-t-butoxycarbonylamino-1′-oxo-ethylamino)-3-(4-pyridyl)-2-(4-fluorophenyl)-7-aza-indole (29) (50 mg, 0.108 mmol), isobutyl chloroformate (42 ml, 0.325 mmol) N-methylmorpholine (119 ml, 1.08 mmol), potassium carbonate (74.9 mg, 0.542 mmol), and DMF (4 mL) were warmed at 80° C. for 16 h. After cooling to 23° C., the reaction was diluted with water (20 mL), extracted with ethyl acetate (2×20 mL), and dried (Na2SO4). After concentration in vacuo, the residue was purified by preparative plate chromatography to afford 6-(2′-t-butoxycarbonylamino-1′-oxo-ethylamino)-3-(4-pyridyl)-2-(4-fluorophenyl)-1-isobutoxycarbonyl-7-aza-indole (142). Compound (104) was converted to 6-(2′-amino-1′-oxo-ethylamino)-3-(4-pyridyl)-2-(4-fluorophenyl)-1-isobutoxycarbonyl-7-aza-indole (143) in the manner of example 6: Mass Spectrum (CI) 462 (MH+).

Provenance & Evidence