Hydrochloric Acid → HCID 69229713, compound

Participants

Reaction Steps

A 15 mL round bottomed flask was charged with 3-{2-hydroxymethyl-4-[2-(2-phenyloxazol-4-yl)ethoxy]phenyl}propionic acid tert-butyl ester (0.10 g, 0.23 mmol), cyclopentylisocyanate (0.15 mL, 1.38 mmol), and anhydrous CH2Cl2 (0.75 mL). A 1.0 M HCl solution in ether (0.115 mL, 0.115 mmol) was added, and the reaction mixture was stirred at ambient temperature under a nitrogen atmosphere for 24 h. The reaction mixture was diluted with CH2Cl2, (30 mL), washed with brine, dried (Na2SO4), and concentrated to an oil. The crude product was purified using radial chromatography (EtOAc:hexanes 10:90 to 35:65) to a colorless oil (0.105 g, 83%). 1H NMR (400 MHz, CDCl3) 1.42 (s, 9H), 1.56-1.65 (m, 4H), 1.94-2.04 (m, 2H), 2.37 (s, 3H), 2.46 (t, J=7.6 Hz, 2H), 2.87 (t, J=8.1 Hz, 2H), 2.96 (t, J=6.6 Hz, 2H), 3.97 (br s, 1H), 4.22 (t, J=6.6 Hz, 2H), 4.76 (br s, 1H), 5.07 (s, 2H), 6.90 (dd, J=8.3, 2.4 Hz, 1H), 6.89 (s, 1H), 7.10 (d, J=8.8 Hz, 1H), 7.40-7.45 (m, 3H), 7.96-7.98 (m, 2H). MS (ES) m/e 549 (M+1).

Provenance & Evidence