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    Le tavole murali di von Schroeder

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    (schede a cura di L.M. Migneco

    Sulfur ylides in reactions with 4-substituted cyclohexanones: Stereochemistry and reactivity

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    The stereochemistry of the epoxidation reactions of the title compounds (R= Me, Et, t-Bu, Ph, p-F-Ph, OMe, OH, CF3, OCOPh) with sulfur ylides (dimethylsulfonium methylide and dimethyloxosulfonium methylide) has been determined in three different solvents (DMSO, C6H6 and THF). Relative rates have been measured and the kinetic constants k(cis) and k(trans) determined
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