Dimethylformamide → bis(4-Fluorophenyl)methyl(5-formyl-1H-1,2,4-triazol-1-ylmethyl)silane

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Bis(4-fluorophenyl)methyl(1H-1,2,4-triazol-1-ylmethyl)silane (1.3 g, 0.004 mol) was lithiated as described in Example 1 using 3.7 mL (0.0044 mol) of 1.2M n-butyllithium in 10 mL of THF. DMF (1.2 mL, 0.016 mol) was added and the solution was allowed to warm to 0° C. After 1 hour, the reaction mixture was diluted with 1:1 ether/hexanes, washed with 7% aqueous NaHCO3 and brine, dried over Na2SO4 and evaporated. Flash chromatography using 10% ether/methylene chloride gave 1.1 g of the title compound as a clear oil: nD 1.5612; ir (neat) 2840, 1705, 1587, 1499, 1228, 1160, 1106, 821 cm-1 ; nmr (CDCl3) δ, 0.7 (3H, s), 4.7 (2H, s), 7.0 (4H, t), 7.4 (4H, m), 7.9 (1H, s), 9.8 (1H, s).

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