反应详情

Ethyl (1-benzyl-6-phenyl-1H-indol-3-yl)(oxo)acetate was prepared from, 1-benzyl-6-phenyl-1H-indole (1.90 g, 6.71 mmol), oxalyl chloride (1.8 mL, 20 mmol), and ethanol (4 mL). Purification by flash chromatography, using 5-12.5% ethyl acetate in hexane as an eluant, yielded the title compound as a light yellow solid (1.98 g, 77%), mp: 121-123° C. Mass spectrum (+ES, [M+H]+) m/z 384; 1HNMR (500 MHz, DMSO-d6): δ 8.7 (s, 1H), 8.25 (d, 1H, J=8.2 Hz), 7.9 (d, 1H, J=0.46 Hz), 7.7 (d, 2H, J=7.9 Hz), 7.65 (dd, 1H, J=8.2 H and 0.76 Hz), 7.45 (t, 2H, J=7.6 Hz), 7.35-7.4 (m, 5H), 7.25-7.35 (m, 1H), 5.65 (s, 2H), 4.35 (q, 2H, J=7.1 Hz), and 1.35 ppm (t, 3H, J=7.1). Elemental Analysis for C25H17NO3: Calculated: C, 78.31; H, 5.52; N, 3.65. Found: C, 77.93; H, 5.40; N, 3.58.

1. customPurification by flash chromatography