To a mixture of 5-(1-(3-bromobenzyl)-5-methyl-1H-1,2,4-triazol-3-yl)-3-(4-(trifluoromethoxy)phenyl)-1,2,4-oxadiazole (Example 11, Step 1; 200 mg, 0.42 mmol), tributyl(vinyl)stannane (159 mg, 0.50 mmol) and K2CO3 (174 mg, 1.26 mmol) in 1,4-dioxane (5 mL), was added Pd(PPh4)3 (28 mg, 0.025 mmol). The reaction mixture was heated in a sealed vial at 110° C. under inert atmosphere for 12 h, cooled to RT, diluted with H2O (30 mL) and extracted with EtOAc (2×20 mL). The combined organic layers were washed with H2O (10 mL) and brine (10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure; the residue was purified by prep-HPLC to give the title compound as a white solid; MS (ES+) C21H16F3N5O2 requires: 427. found: 428 [M+H]+; 1H-NMR (500 MHz, DMSO-d6) δ 8.22 (d, J=9 Hz, 2H), 7.61 (d, J=9 Hz, 2H), 7.48 (d, J=7 Hz, 1H), 7.43 (s, 1H), 7.38 (m, 1H), 7.21 (d, J=7 Hz, 1H), 6.76 (m, 1H), 5.87 (d, J=17.5 Hz, 1H), 5.57 (s, 2H), 5.31 (d, J=11.5 Hz, 1H), 2.60 (s, 3H).
