In a 100 mL round bottom flask, compound 4 (0.50 g, 0.89 mmol), K2CO3 (0.16 g, 1.11 mmol) and 4phenylphenol (0.19 g, 1.11 mmol) were dissolved in ACN. The reaction was allowed to reflux for 72 h, after which the volatile components were removed under reduced pressure. The resulting product was redissolved in DCM and washed with 3 aliquots (50 mL) of a 5% aq. Na2CO3 solution. The organic phase was dried with anhydrous MgSO4 and filtered, and the volatile components removed under vacuum to afford an off-white gel. The crude product was tritrated with MeOH (3 × 20 mL) to yield the pure product 11 as a white powder. Yield: 0.49 g, 98%. The NMR spectrum obtained agreed with previously reported data.