1,4-Dioxane → Ethyl acetate hexane

Participants

Reaction Steps

3-(4′-(tert-Butyl)-[1,1′-biphenyl]-3-yl)-6,7-dimethoxy-1-methylisoquinoline (100 mg) and SeO2 (32 mg, 1.2 eq.) in 5 mL anhydrous dioxane were refluxed at 102° C. for 3 hours. Solution was then cooled to room temperature and filtered to remove precipitate. Resulting filtrate was concentrated. Chromatography achieved using ISCO max gradient 30% EtOAc/hexane yielding product as a yellow solid (80 mg, 77% yield). 1H NMR (400 MHz) (CDCl3) δ 10.40 (s, 1H), 8.68 (s, 1H), 8.34 (m, 1H), 8.14 (s, 1H), 8.07 (d, J=8 Hz, 1H), 7.59 (d, J=8 Hz, 3H), 7.52 (t, J=16 Hz, 1H), 7.45 (d, J=8 Hz, 2H), 7.13 (s, 1H), 4.05 (s, 3H), 4.00 (s, 3H), 1.32 (s, 9H). 13C NMR (100 MHz) (CDCl3) δ 196.81, 153.33, 152.83, 149.76, 141.84, 139.20, 138.29, 135.44, 129.26, 127.43, 126.95, 125.76, 125.59, 125.35, 122.19, 120.01, 104.99, 103.59, 56.29, 56.02, 34.57, 31.38.

Provenance & Evidence