1-(Difluoromethoxy)-4-iodobenzene → 2-(3-{[4-(Difluoromethoxy)phenyl]ethynyl}phenyl)-1,3-dioxolane

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Using essentially the same procedure described in Example 1, step a, and employing 2-(3-ethynylphenyl)-1,3-dioxolane and 1-(difluoromethoxy)-4-iodobenzene, the coupled product was obtained. This product was purified on silica gel (ISCO) using hexanes/EtOAc 5/1 as the eluting solvents to give 2-(3-{[4-(difluoromethoxy)phenyl]ethynyl}phenyl)-1,3-dioxolane as a yellow oil (7.9 g, 85% yield), MS m/e (M+H)+ 317; 1H NMR (400 MHz, DMSO-d6) 3.9-4.05 (m, 4H), 5.72 (s, 1H), 7.1-7.3 (m, 3H), 7.4 (m, 2H), 7.5-7.6 (m, 4H).

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