Potassium Carbonate → HCID 59146135, Verbindung

Beteiligte Stoffe

Reaktionsschritte

7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indole-3-carbaldehyde (D71) (381 mg) and ethyl glycinate hydrochloride (223 mg) were added to a solution of NaOH (27 mg) in ethanol (20 mL), followed by addition of AcOH (3 mL). Under stirring NaBH3CN (50 mg) in ethanol (2 mL) was added dropwise. The reaction mixture was stirred at room temperature overnight and then basified to pH 9 by K2CO3 solution. The mixture was concentrated and EtOAc (50 mL) was added. The organic layer was separated and washed with water and brine. After the solvent was evaporated off the residue was purified by Mass Directed AutoPrep to afford ethyl N-{[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]methyl}glycinate (D73) (130 mg) as a yellow solid. δH (DMSO-d6, 400 MHz): 1.20 (3H, t), 1.38 (6H, d), 3.48 (2H, s), 4.03 (2H, s), 4.12 (2H, q), 4.88-4.94 (1H, m), 7.25 (1H, t), 7.44 (1H, d), 7.46 (1H, d), 7.96 (1H, t), 8.22 (1H, dd), 8.39 (1H, d), 11.00 (1H, s).

Herkunft & Nachweise