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- W1994530393 abstract "The solvolysis of phenyl[(E)-styryl]iodonium tetrafluoroborate in various solvents was examined at 50—70 °C by means of product and kinetic studies with the normal and labeled substrates. The reactions involved are α-elimination and substitutions with configurational retention and inversion. In methanol and ethanol, the main reaction is α-elimination, along with about 5% of substitution with the ratio of inversion/retention from 4/6 to 3/7. As the basicity of the solvent decreases, the reaction rate and the fraction of α-elimination decrease, and at the same time the ratio of inversion/retention of substitution also decreases. In 2,2,2-trifluoroethanol, only the substitution with retention was observed. Labeling experiments showed that complete isotope scrambling occurred between the olefinic hydrogens of the retained product while the deuterium remained at the original position of the inverted product. The substitution mechanism is concluded to involve parallel pathways: an SN1-type with a vinylenebenzenium ion intermediate leading to retention and a vinylic SN2-type with a direct attack by the nucleophilic solvent leading to inversion." @default.
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- W1994530393 date "1999-02-01" @default.
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- W1994530393 title "Solvolysis of Styryliodonium Salt: Products, Rates, and Mechanisms" @default.
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- W1994530393 doi "https://doi.org/10.1246/bcsj.72.163" @default.
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