Hydrochloric Acid → HCID 51349356, compound

Participants

Reaction Steps

To a solution of 4-ethoxy-2-oxo-2,3-dihydrobenzo[d]oxazole-6-carbaldehyde (Intermediate 76) (70 mg, 0.34 mmol), 1,2-diphenylethanone (70 mg, 0.36 mmol) and urea (82 mg, 1.4 mmol) in 5 mL of ethanol was added 0.2 ml con. HCl under N2. The reaction mixture was refluxed overnight. The reaction mixture was purified by prep-HPLC (0.1% TFA as additive) and solvent removed to give Compound 150 as white solid (32 mg, yield 22%). 1H NMR (CD3OD 400 MHz): 7.27 (m, 5H), 7.06-7.04 (m, 3H), 6.92-6.87 (m, 3H), 6.82 (s, 1H), 5.33 (s, 1H), 4.14-4.08 (m, 2H), 1.41 (t, J=6.8 Hz, 3H). MS (ESI): m/z 428.2 [M+1]+.

Provenance & Evidence