Acetic Anhydride → HCID 9907985, compound

Participants

Reaction Steps

4′,7-Diacetoxy-3′-methoxy-8-methylisoflavone was prepared from 4′,7-dihydroxy-3′-methoxy-8-methylisoflavone (0.42 g, 1.4 mmol), acetic anhydride (2.6 ml) and pyridine (0.5 ml) as described for 4′,7-diacetoxy-8-methylisoflavone. Yield: (0.4 g, 74%) m.p. 209° C. 1H NMR (CDCl3): δ 2.22 (s, 3H, CH3), 2.32, 2.39 (each s, 3H, OCOCH3), 3.89 (s, 3H, OMe), 7.07-7.11 (m, 2H, ArH), 7.13 (d, 1H, J 8.6 Hz, H6), 7.32 (d, 1H, J 1.5 Hz, ArH), 8.09 (s, 1H, H2), 8.18 (d, 1H, J 8.7 Hz, H5).

Provenance & Evidence