反应详情

To a solution of 31 mg (0.16 mmol) of 5-chloro-1H-indole-7-carboxylic acid and 51 mg of TBTU (0.16 mmol) in 2 ml DMF, were added 0.14 ml (0.79 mmol) of N,N-diisopropyl-ethyl amine. After stirring for 5 min at rt, 81 mg (0.16 mmol) of [rac]-(4-tert-butyl-benzyl)-[2-(3,4-dichloro-phenyl)-2-hydroxy-ethyl]-amine were added. After stirring for 17 h at rt, the reaction mixture was diluted with 20 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 2:1) to give 38 mg (44%) of a light yellow foam. MS: 528 (M).

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 2:1)