Acetic Anhydride → HCID 58236598, compound

Participants

Reaction Steps

A solution of compound 345 (18.5 mg, 0.028 mmol) in acetic anhydride (1.31 ml, 13.9 mmol) was stirred at room temperature for 60 h. The solvent was removed under reduced pressure and the residue was triturated with water for 3 h. The solid suspension was filtered, the precipitate was rinsed with water and dried under high vacuum to afford compound 346 (6.4 mg, 9.07 μmol, 32.5%) as a beige solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): mixture of rotamers, 10.64 (s, 1H), 10.60 (s, 1H), 8.55-8.49 (m, 2H), 8.38-8.21 (m, 3H), 7.91-7.86 (m, 2H), 7.78 (td, J=8.8, 2.0 Hz, 1H), 7.66-7.60 (m, 2H), 7.51 (t, J=8.8 Hz, 1H), 7.44 (dd, J=9.2, 1.6 Hz, 1H), 6.71-6.67 (m, 1H), 4.71 and 4.59 (2s, 2H), 3.58-3.23 (m, 14H), 3.21 (s, 3H), 2.13 and 2.05 (2s, 3H). MS (m/z): 706.5 (M+H).

Provenance & Evidence