反应详情

To a solution of 15 mg (0.08 mmol) of 5-chloro-1H-indole-7-carboxylic acid and 24 mg of TBTU (0.08 mmol) in 1.5 ml DMF, were added 0.066 ml (0.38 mmol) of N,N-diisopropylethyl amine in 1 ml DMF. After stirring for 5 min at rt, 25 mg (0.08 mmol) of [rac]-(4-tert-butyl-benzyl)-[2-(4-chloro-phenyl)-2-fluoro-ethyl]-amine were added. After stirring for 17 h at rt, the reaction mixture was diluted with 40 ml water and extracted with EtOAc (2×). The combined organic phases were washed with water and brine, dried with magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 4:1) to give 9 mg (21%) of a light yellow solid. MS (ISP): 497.3 (M+H)+.

1. stirringAfter stirring for 17 h at rt
2. extractionextracted with EtOAc (2×)
3. washThe combined organic phases were washed with water and brine
4. dry with materialdried with magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 4:1)