383132-31-8, 5-Bromo-7-chloro-1H-indole-2-carboxylic acid is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
A mixture of 5-bromo-7-chloroindole-2-carboxylic acid (1.02 g, 3.71 mmol), 2- thiophenemethylamine (418.5 muL, 4.08 mmol), N, N-di-isopropylethylamine (1.94 mL, 11.12 mmol), and PyBroP (1.90 g, 4.08 mmol) was stirred in DMF (15 mL) at room temperature for 30 min. The mixture was diluted with EtOAc (150 mL) and washed successively with 2N HCl (2 x 50 mL), saturated aqueous NaHCO3 (50 mL), and brine (50 mL). The organic phase was dried (MgSO4), and filtered through a small pad of silica gel. Concentration of the solvent gave 5-bromo-7-chloro-lH-indole-2-carboxylic acid (thiophen-2-ylmethyl)-amide (1.50 g) as a white solid which was used for the next step without further purification. 1H NMR (d6-DMSO, 300 MHz) delta 4.67 (d, 2H, J – 5.9 Hz), 6.97 (dd, IH, J = 3.5, 5 Hz), 7.06 (dd, IH, J = 1.2, 3.5 Hz), 7.19 (s, IH), 7.41 (dd, IH, J = 1.2, 5 Hz), 7.46 (d, IH, J = 1.5 Hz), 7.86 (d, IH, J = 1.5 Hz), 9.21 (t, IH, J = 5.9 Hz), 1 1.98 (s, IH); MS (ESI) m/z = 368.9, 370.9 (MH+).
383132-31-8, The synthetic route of 383132-31-8 has been constantly updated, and we look forward to future research findings.
Reference：
Patent; GENELABS TECHNOLOGIES, INC.; WO2009/23179; (2009); A2;,
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