Triethylamine → N-(3-pyridylmethyl)-5-chloro-3-phenylthioindole-2-carboxamide

Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorphosphate (0.73 g, 1.6 mmol) was added to a solution of 5-chloro-3-phenylthio-indole-2-carboxylic acid (0.50 g, 1.6 mmol), 3-aminomethylpyridine (0.35 g, 3.2 mmol) and triethylamine (0.50 mL, 3.2 mmol) in degassed dimethylformamide (25 mL). The reaction was stirred at room temperature overnight. The precipitated product was filtered and the filter cake washed well with water. The solid was triturated with 30% ethyl acetate in hexane, filtered and dried at 60° C. in vacuo for 72 h. The title compound was obtained as an off-white solid, mp 240°-241° C. Anal. Calc. for C21H16ClN3OS.0.25 H2O: C, 63.31; H, 4.17; N, 10.54. Found: C, 63.34; H, 4.06; N, 10.71. NMR (DMSO-d6): δ12.54 (1H, s), 8.91 (1H, t, J=6 Hz), 8.51 (1H, s), 8.42 (1H, d, J=5 Hz), 7.58 (2H, m), 7.45 (1H, m), 7.25 (4H, m), 7.15 (1H, t, J=7 Hz), 7.04 (2H, d, J=8 Hz), 4.58 (2H, d, J=6 Hz).

1. filtrationThe precipitated product was filtered
2. washthe filter cake washed well with water
3. customThe solid was triturated with 30% ethyl acetate in hexane
4. filtrationfiltered
5. customdried at 60° C. in vacuo for 72 h

ORD-Eintrag

ord-5d27dcdc32c1461fa49b63fa50397c40

Quelldatensatz

uspto-grants-1996_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05527819