Triethylamine → 5-Chloro-7-nitro-3-phenyl-2-trimethylsilyl-1H-indole

Participants

Reaction Steps

2-Amino-5-chloro-3-nitro-phenyliodide (1.5 g, 4.90 mmol) prepared in Preparation 19 and 1-phenyl-2-trimethylsilylacetylene (4.3 g, 24.50 mmol) were dissolved in DMF (50 mL). Palladium acetate (0.11 g, 0.5 mmol), lithium chloride (0.21 g, 4.90 mmol) and triethylamine (2.48 g, 24.50 mmol) were added thereto, and the mixture was stirred under heating for 3 h to 100° C. After completion of the reaction, water was added to the reaction mixture, which was then extracted with ethyl acetate, washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and filtered. The solvent was removed under reduced pressure, and the residue was purified by column chromatography to give the title compound (1.05 g, Yield 87%).

Provenance & Evidence