Hydrochloric Acid → HCID 58934292, compound

Participants

Reaction Steps

To a solution of 0.142 g [1,5-bis-(4-trifluoromethoxy-phenyl)-1H-indol-3-yl]-oxo-acetic acid ethyl ester from Step 3 in 1 mL THF was added 2 ml 0.5M aqueous LiOH. The reaction was mixed using orbital shaking for 5 hr, at which time TLC indicated that the reaction was complete. The solution was acidified by the dropwise addition of 2N aqueous HCl and extracted with dichloromethane. The organic phase was dried by filtration through a ChemElute column (Varian Inc., Palo Alto, Calif.) and the solvent was evaporated to afford 82 mg [1,5-Bis-(4-trifluoromethoxy-phenyl)-1H-indol-3-yl]-oxo-acetic acid as a yellow solid: 1H NMR (CDCl3, 400 MHz) δ 9.13 (s, 1H), 8.64 (s, 1H), 7.70 (d, J=6.6 Hz, 2H), 7.57–7.68 (m, 3H), 7.46–7.56 (m, 3H), 7.33 (d, J=8 Hz, 2H), MS: m/z (ESI) 508.2 (M−H);

Provenance & Evidence