[2-(2,6-Dichloro-phenyl)-ethyl]-(3-iodo-benzyl)-carbamic acid tert-butyl ester (506 mg), tetrabutylammonium chloride (280 mg), sodium bicarbonate (210 mg), allyl alcohol (100 μL) and toluene (20 mL) were charged to a flask, followed by palladium acetate (10 mg) and the resultant mixture heated to 80° C., under nitrogen for 5 hours. On cooling, the reaction was filtered, the filtrate diluted with toluene and extracted sequentially, twice with water, once with brine, dried (magnesium sulfate) and evaporated. Purification on silica, eluting with a gradient of iso-hexane/ethyl acetate [4:1 to 2:1], gave the subtitle product as an oil (300 mg).
