To a round bottom flask containing 4-cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylic acid [6-bromo-2-(4,4-dimethyl-cyclohex-1-enyl)-pyridin-3-yl]-amide (as prepared in Example 56, step (c), 32 mg, 0.060 mmol), Pd(PPh3)4 (7 mg, 0.006 mmol), and tributyl-(1-ethoxy-vinyl)-stannane (30 mg, 0.080 mmol) was added DMF (0.7 mL) and the resultant solution was allowed to stir at 100° C. overnight. The reaction was diluted with EtOAc (25 mL), washed with water (2×25 mL), dried (Na2SO4) and concentrated in vacuo. Purification of the residue by preparative TLC (20% EtOAc-hexanes) afforded 12 mg (43%) of the title compound as an oil. Mass spectrum (ESI, m/z): Calcd. for C28H39N5O3Si, 522.2 (M+H). found 522.3.
