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A direct method for the synthesis of highly functionalized bicyclic-γ-lactones with three consecutive stereocenters has been developed from the reaction of the easily available 2,3-epoxycyclohexanone and different bis-(trimethylsilyl)ketene acetals in the presence of TiCl4. During reaction, a chlorine atom transfer from TiCl4 occurs as confirmed by single crystal X-ray crystallography. The phytotoxic...
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