Lithium Hydroxide → HCID 58215646, compound

Participants

Reaction Steps

5-Cyano-3-methyl-2-pyridin-3-yl-indole (Example 6) is processed according to the method described in Example 11 to give 4-(5-cyano-3-methyl-2-pyridin-3-yl-indol-1-ylmethyl)-benzoic acid methyl ester. To a solution of 4-(5-cyano-3-methyl-2-pyridin-3-yl-indol-1-ylmethyl)-benzoic acid methyl ester (80 mg, 0.21 mmol) in methanol (5 mL) and THF (5 mL) is added 1M aqueous lithium hydroxide (2.5 mL, 2.5 mmol) and the mixture is stirred overnight at ambient temperature. The volatiles are removed in vacuo and the residue is redissolved in DMF and purified by Xbridge RP18 with a gradient of 0.1% aqueous ammonium hydroxide in acetonitrile to give 4-(5-cyano-3-methyl-2-pyridin-3-yl-indol-1-ylmethyl)-benzoic acid. 1H NMR (400 MHz, DMSO-d6) δ ppm 2.25 (s, 3H), 5.40 (s, 2H), 6.71 (d, J=8.1 Hz, 2H), 7.47-7.55 (m, 2H), 7.66 (t, J=8.6 Hz, 3H), 7.79-7.83 (m, 1H), 8.20 (d, J=1.3 Hz, 1H), 8.58 (d, J=1.5 Hz, 1H), 8.64 (dd, J=4.8, 1.5 Hz, 1H). HRMS (ESI) m/z 368.1396 [(M+H)+ Calcd for C23H18N3O2: 368.1399].

Provenance & Evidence