反应详情

A mixture of 2-(morpholine-4-carbonyl)-1-(2,2,2-trifluoro-ethyl)-1H-indole-5-carboxylic acid (100 mg, 0.28 mmol) and 1,1′-carbonyl-diimidazole (59 mg, 0.37 mmol) in tetrahydrofuran was stirred at room temperature overnight. 1-Isopropylpiperazine (72 mg, 0.56 mmol) was then added and the mixture was stirred for an additional 40 min. The volatiles were removed in vacuo and the residue was purified by flash chromatography on silica gel with dichloromethane:methanol:ammonia (95:5:0.25 v/v) as eluant, to give 90 mg (68%) of the desired compound as an off-white solid.

1. stirringthe mixture was stirred for an additional 40 min
2. customThe volatiles were removed in vacuo
3. customthe residue was purified by flash chromatography on silica gel with dichloromethane:methanol:ammonia (95:5:0.25 v/v) as eluant