Influence des interactions attractives non liees sur les stabilites relatives d'ethers et d'acetates d'enol renfermant un groupe styryle |
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Authors: | Jack Huet |
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Affiliation: | Institut de Chimie des Substances Naturelles, C.N.R.S., Gif-sur-Yvette (Essonne, France |
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Abstract: | The measure of relative stabilities of β-alcoxystyrene isomers I: C6H5-CHCH-OR shows that the trans compound is the most stable when RCH3 and C2H5 and the cis compound is the most stable when Ri-C3H7 and t-C4H9. The orientation of the OR group can be determined by RMN 13C. The stabilities of these molecules are discussed in terms of non bounded attractive interactions. This interpretation is confirmed by the measure of relative stabilities of α-methyl β-alcoxy (and acetoxy)-styrene isomers II: C6H5-C(CH3)CH-OR. (RCH3, C2H5 et COCH3). |
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