Lithium Hydroxide → HCID 86751796, compound

Participants

Reaction Steps

Ethyl β[[4-[[4-(aminoiminomethyl)phenyl]-amino]-1,4-dioxobutyl]amino]-(pentafluorophenyl)propanoate prepared in Example 59 (600 mg) was added to water/acetonitrile (20 ml) followed by lithium hydroxide (100 mg) at 25° C. The mixture was stirred for 30 min. The course of the reaction was monitored by RPHPLC. After satisfactory acid was formed the reaction was neutralized with TFA and purified by reverse phase chromatography (water/acetonitrile) to result in 620 mg of a white solid: 1H NMR (d6 -DMSO) δ2.38 (t, 2H, J=7.3 Hz), 2.44 (d, 2H, J=6.4 Hz), 2.56 (t, 2H, J=7.3 Hz), 4.32 (m, 1H), 7.78 (s, 4H), 7.99 (d, 1H,J=8.1 Hz), 8.92 (bs, 2H), 9.16 (bs, 2H), 10.39 (s, 1H); MS (FAB) m/z 365.2 (MH+).

Provenance & Evidence