Hydrochloric Acid → Efipladib

Participants

Reaction Steps

A solution of ethyl 4-{3-[1-benzhydryl-5-chloro-2-(2-{[(3,4-dichlorobenzyl)sulfonyl]-amino}ethyl)-1H-indol-3-yl]propyl}benzoate (0.50 g, 0.65 mmol), LiOH (0.24 g, 10.0 mmol), methanol (5 mL), THF (5 mL) and water (5 mL) was stirred for 18 h at rt, then diluted with water (200 mL). 1 N HCl (10 mL) was added. The reaction mixture was extracted with EtOAc (2×50 mL). The organic extracts were dried over Na2SO4. The solvent is evaporated to give a white solid (0.46 g, 96%). 1H NMR (DMSO−d6): 512.80 (br.s, 1H), 7.89 (d, 2H, J=2 Hz), 7.59 (d, 1H, J=1.5 Hz), 7.53 (d, 1H, J=6 Hz), 7.48 (d, 1H, J=1.5 Hz), 7.38 (m, 9H), 7.20 (m, 5H), 6.77 (dd, 1H, J=6.9 & 1.5 Hz), 6.46 (d, 1H, J=6.9 Hz), 4.36 (s, 2H), 3.18 (m, 2H), 2.96 (m, 2H), 2.76 (m, 4H), 1.90 (m, 2H).

Provenance & Evidence