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- W2952332316 abstract "The relative thermodynamic stabilities of ten allyl ethers (ROCH2CHCH2) and the corresponding isomeric (Z)-propenyl ethers (where R is an alkyl group, or a methoxysubstituted alkyl group) have been determined by chemical equilibration in DMSO solution with t-BuOK as catalyst. From the variation of the equilibrium constant with temperature, the values of the thermodynamic parameters ΔGΘ, ΔHΘ and ΔSΘ of isomerization at 298.15 K were evaluated. The propenyl ethers are highly favored at equilibrium, the values of both ΔGΘ and ΔHΘ for the allyl → propenyl reaction being ca. −18 to −25 kJ mol−1. The favor of the propenyl ethers is increased by bulky alkyl substituents, and decreased by methoxy-substituted alkyl groups. In most cases the entropy contribution is negligible; however, for R = (MeO)2CH and R = (MeO)3C the values of ΔSΘ are ca. −5 J K−1 mol−1." @default.
- W2952332316 created "2019-06-27" @default.
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- W2952332316 date "1993-01-01" @default.
- W2952332316 modified "2023-10-11" @default.
- W2952332316 title "Relative thermodynamic stabilities of isomeric alkyl allyl and alkyl (Z)-propenyl ethers" @default.
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- W2952332316 doi "https://doi.org/10.1016/s0040-4020(01)81820-2" @default.
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