Triphenylphosphine → 3-Acetyl-1-chloro-5-(3,3-dichloroprop-2-enyloxy)-2-[3-(5-trifluoromethylpyrid-2-yloxy)propyloxy]benzene

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Reaction Steps

Under an atmosphere of protective gas, 1.2 g of 3-acetyl-1-chloro-5-(3,3-dichloroprop-2-enyloxy)-2-hydroxybenzene, 0.9 g of 3-(5-trifluoromethylpyrid-2-yloxy)propan-1-ol and 1.12 g of triphenylphosphine were dissolved in 35 ml of dry tetrahydrofuran (THF). With ice-bath cooling, 0.74 g of diethyl azodicarboxylate was added dropwise. After about 30 minutes, the ice-bath was removed, and the mixture was stirred at room temperature for 15 hours. The mixture was then concentrated under reduced pressure and the residue was taken up in a mixture of ethyl acetate and water. After shaking, the organic phase was isolated, dried and concentrated under reduced pressure. The crude product was purified chromatographically. Yield: 1.52 g (74%)

Provenance & Evidence