Combined 34-A (6.1 g, 61 mmol), 9-A (3.55 g, 15.9 mmol), potassium carbonate (10.0 g, 72.4 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (2.50 g, 3.06 mmol) in 200 mL dioxane. The reaction was degassed and heated at 90° C. for 48 hours. The crude was extracted with ethyl acetate, washed with water and brine. The combined organic extracts were dried over Na2SO4, filtered and evaporated to give 11.4 g of a dark glass. The crude was chromatographed on a silica column to afford a dark semi-solid (3.3 g, 90%). 1H NMR (500 MHz, CDCl3): δ 7.72 (d, J=8.8 Hz, 2H), 7.38 (d, J=8.8 Hz, 2H), 6.62 (s, 1H), 4.77 (br s, 1H), 3.89 (br s, 1H), 3.69 (m, 1H), 3.58 (m, 1H), 2.93 (d, J=7.2 Hz, 2H) 1.43 (s, 9H), 1.39 (s, 9H).
