Sodium → HCID 178459321, compound

Participants

Reaction Steps

Sodium (0.15 g, 6.5 mmol) was dissolved in ethanol (3.5 mL) at room temperature. Once all the sodium was dissolved, 2-tris(trimethylsilyl)silylhydroxybutylguanidine hydrochloride (2.45 g, 6.5 mmol) was added and the mixture was stirred for 1 h. A white precipitate formed and was filtered off. The filtrate was evaporated under reduced pressure and a solution of ethyl 3-{4′-[(4-acetylpiperazin-1-yl)methyl]-2-(3-methoxypropoxy)biphenyl-4-yl}propanoate (0.50 g, 1.0 mmol) and DMF (3.5 mL) was added at room temperature. After completion of the reaction, the mixture was poured into dichloromethane/brine (50/50). The aqueous layer was extracted three times with dichloromethane. The combined; organic layers were washed with brine, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The residue was then dissolved in ethanol and HCl in diethyl ether (1N, 4 mL) was added. The mixture was evaporated and the residue was purified on reverse phase (C18) flash chromatography (H2O, HCl N/1000, acetonitrile, 100/0 to 80/20) to afford 0.11 g (15%) of the desired product as a white solid: mp=95° C.; 1H NMR (400 MHZ, CDCl3) δ 13.20 (bs, 1H), 12.53 (bs, 1H), 9.53 (t, 1H), 7.62 (m, 4H), 7.21 (d, 1H), 6.98 (d, 1H), 6.96 (s, 1H), 4.71 (m, 1H), 4.23 (s, 2H), 4.06 (t, 2H), 3.89 (m, 2H), 3.53 (m, 6H), 3.41 (t, 2H), 3.29 (s, 3H), 3.08 (t, 2H), 2.95 (t, 2H), 2.85 (m, 2H), 2.12 (s, 3H), 2.00 (m, 2H), 1.59 (m, 2H), 1.00 (t, 3H).

Provenance & Evidence