Hydrochloric Acid → HCID 178488092, compound

Participants

Reaction Steps

A solution of LiOH.H2O (1.02 g, 24.4 mmol) in water (15 ml) was added to a suspension of 376a (3.99 g, 9.75 mmol of in THF (10 ml). The reaction mixture was stirred 16 h at room temperature. The reaction mixture was acidified with a solution of HCl 1 M to pH 4. The desired product was triturated 20 min. at 0° C. and then filtered and dried. Compound 376b was obtained as a white powder (100% yield, 3.05 g). 1H NMR: (DMSO) δ (ppm): 12.85 (bs, 1H), 7.86 (d, J=8.1 Hz, 2H), 7.53 (d, J=8.1 Hz, 2H), 7.35 (d, J=8.1 Hz, 1H), 6.97 (d, J=2.2 Hz, 1H), 6.76 (dd, J=8.8, 2.2 Hz, 1H), 4.60 (s, 2H), 3.82 (s, 3H), MS: (calc.) 314.1, (obt.), 315.1 (MH)+.

Provenance & Evidence