Isopropanol → HCID 58044026, compound

Participants

Reaction Steps

A 100-mL, single-necked, round-bottomed flask equipped with a magnetic stirring bar was charged with 113b (105 mg, 0.17 mmol), LiOH.H2O (35 mg, 0.83 mmol), THF (2 mL), isopropanol (2 mL), and water (1 mL). After the reaction mixture was stirred at room temperature for 3 h, it was partitioned between dichloromethane (5 mL) and water (5 mL), and the organic phase was extracted with dichloromethane (5 mL×3). The combined organic phases were washed with water (5 mL×2) and brine (5 mL×1), dried (Na2SO4), and concentrated. The crude product was re-dissolved in dichloromethane (3 mL). To this solution was added hexane (10 mL) and the resulting precipitates were filtered to give 80% yield (79 mg) of 2-(2-hydroxymethyl-3-{1-methyl-5-[5-(4-methyl-piperazin-1-yl)-pyridin-2-ylamino]-6-oxo-1,6-dihydro-pyridin-3-yl}-phenyl)-3,4,6,7,8,9-hexahydro-2H-pyrazino[1,2-a]indol-1-one 113; MS (ESI+) m/z 594.3 (M+H).

Provenance & Evidence