HCID 59783546, compound → HCID 58388803, compound

Participants

Reaction Steps

Title compound 4 was dissolved in ethanol (25 mL) and THF (5 mL). Platinum (IV) oxide (0.075 g, 10% wt) was added. The mixture was stirred at room temperature for 3 h under 1 atmosphere of hydrogen. The catalyst was filtered and the filtrate was concentrated under reduced pressure to one third volume. The precipitate was filtered to afford title compound 5 (510 mg, 67%) as a white solid. LRMS (ESI): (calc) 345.14. (found) 346.3 (MH)+. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 7.88 (d, J=8.4 Hz, 2H), 7.48 (dd, J=7.5, 1.7 Hz, 1H), 7.39 (d, J=8.0 Hz, 2H), 7.33 (td, J=7.7, 1.8 Hz, 1H), 7.19 (td, J=7.4, 1.2 Hz, 1H), 7.11 (dd, J=8.0, 1.2 Hz, 1H), 6.90-6.83 (m, 3H), 6.77 (dd, J=7.9, 1.4 Hz, 1H), 6.50 (td, J=7.3, 1.6 Hz, 1H), 5.55 (d, J=6.1 Hz, 1H), 4.28 (q, J=7.0 Hz, 2H), 1.28 (t, J=7.0 Hz, 3H).

Provenance & Evidence