4-Formylphenylboronic Acid → Isopropyl 4-[5-(4-formylphenyl)benzo[d]oxazol-2-yl]piperidine-1-carboxylate

Participants

Reaction Steps

Following the General Procedure-1, the titled compound (100 mg) was prepared from Intermediate 13 (270 mg, 0.73 mmol) and 4-formylphenylboronic acid (132 mg, 0.88 mmol) as an off-white solid. M.P.: 167-170° C. 1H-NMR (δ ppm, CDCl3, 400 MHz): 10.07 (S, 1H), 7.96 (dd, J 1.7, 6.6, 2H), 7.93 (s, 1H), 7.76 (d, J 8.2, 2H), 7.58 (s, 2H), 4.95 (septet, J 6.2, 1H), 4.20 (d, J 11.1, 2H), 3.22-3.13 (m, 1H), 3.04 (t, J 11.3, 2H), 2.18 (dd, J 2.8, 13.3, 2H).

Provenance & Evidence