2-Phenylindole → HCID 23159972, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-phenyl-1H-indole (4.64 g, 24.0 mmol) in N,N-dimethylformamide (50 mL) was added sodium hydride (60% in oil, 0.96 g, 24.0 mmol) with stirring at 0° C., and the mixture was stirred at the same temperature for 10 min. Methyl 3-(bromomethyl)benzoate (5.0 g, 21.8 mmol) was added to the obtained mixture, and the mixture was stirred at the same temperature for 2 hr. After completion of the reaction, the reaction mixture was diluted with ethyl acetate, and the mixture washed with 5% aqueous potassium hydrogensulfate solution and saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to give methyl 3-[(2-phenyl-1H-indol-1-yl)methyl]benzoate (3.67 g). Then, to a solution of the product in tetrahydrofuran (37 mL) was added lithium aluminum hydride (0.41 g, 10.7 mmol) with stirring at 0° C., and the mixture was stirred at the same temperature for 2 hr. After completion of the reaction, sodium hydrogensulfate decahydrate (6.9 g, 21.4 mmol) was added to the reaction mixture, and the mixture was stirred at room temperature for 2 hr. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=10/1-hexane/ethyl acetate=1/1) to give the title compound (2.63 g, yield 79%) as a yellow oil. 1H NMR (CDCl3) δ: 1.57 (1H, m), 4.62 (2H, d, J=2.1 Hz), 5.37 (2H, s), 6.66 (1H, s), 6.93 (1H, m), 7.07 (1H, s), 7.11-7.20 (3H, m), 7.22-7.31 (2H, m), 7.33-7.48 (5H, m), 7.67 (1H, m).

Provenance & Evidence