[3-(1-adamantyl)-4-methoxyphenyl]-5,5-dimethyl-1,3,2-dioxaborinane (100 mg, 0.28 mmol), 6-bromo-2-naphthalenyl trifluoromethanesulphonate (67 mg, 0.19 mmol), K3PO4 (160 mg, 0.75 mmol), THF (2 ml) and H2O (0.4 ml) were introduced in a Schlenk tube. The reaction mixture was deoxygenated (3 froze/thaw cycles). Next, Pd(PPh3)4 (11 mg, 0.009 mmol) was added and the mixture was again deoxygenated (2 froze/thaw cycles). After heating at reflux for 17 h, the mixture was diluted in toluene (5 ml) while it was still hot. The solution was filtered through celite and it was washed with hot toluene (2×5 ml). The joined organic phases were washed with hot H2O (2×5 ml). The organic phase was evaporated and a crude (59 mg) was obtained, which was recrystallized with the minimum volume of toluene at reflux (0.55 ml), giving the title compound (20 mg, 24%) as a pale yellow powder. The spectroscopic data coincide with those of the Example 4.
