1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 882999-52-2

Participants

Reaction Steps

A mixture of (E)-3-(5-fluoro-3-methyl-1H-indol-7-yl)-acrylic acid (772 g, 3.53 mole), 4,5-dichloro-2-thiophenesulfonamide (900 g, 3.88 mole), 4-(dimethylamino)pyridine (861 g, 7.06 mole) and EDCI (1.348 kg, 7.06 mole) in dichloromethane (25.5 L) was stirred at ambient temperature for 14 h. The solution was diluted with 2 M aqueous HCl (16 L), and stirred for 1.5 h, which induced precipitation of the product. The product was collected via vacuum filtration and washed sequentially with water (2×2 L), dichloromethane (2×2 L), and hexanes (2 L) to provide 1.044 kg (71% yield) of the desired title compound. 1H NMR (400 MHz, DMSO-d6) δ 2.23 (s, 3H), 6.71 (d, 1H, J=15.6 Hz), 7.22 (dd, 1H, J=10.0, 2.6 Hz), 7.27 (br s, 1H), 7.39 (dd, 1H, J=9.6, 2.6 Hz), 7.95 (s, 1H), 8.15 (dd, 1H, J=15.6, 1.2 Hz), 11.35 (s, 1H).

Provenance & Evidence