反应详情

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.11 g, 0.57 mmol) followed by 1-hydroxybenzotriazole hydrate (0.08 g, 0.59 mmol) were added to a solution of 1-(5-tert-butyl-2-methoxybenzyl)-5-chloro-1H-indole-2-carboxylic acid (0.20 g, 0.54 mmol) in DCM (10.0 ml) and after stirring for 10 min, 3-amino-2,2-dimethylpropan-1-ol (67 mg, 0.65 mmol) was added. After stirring for 17.5 h, water (10 ml) was added, the layers separated, the organic washed with water (3×15 ml) and dried with magnesium sulfate. Purification was achieved by chromatography on silica using DCM:methanol (3:1) as eluent. Crystallisation of the crude afforded the title compound as a white solid (90 mg, 36%).

1. stirringAfter stirring for 17.5 h
2. customthe layers separated
3. washthe organic washed with water (3×15 ml)
4. dry with materialdried with magnesium sulfate
5. customPurification
6. customCrystallisation of the crude