Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 70, Issue 14, Pages 5561-5570Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo0505829
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Penta-1,3-dienyl acrylates undergo kinetically controlled intramolecular Diels-Alder (lMDA) reactions and DFT calculations (B3LYP/6-31+G(d)) predict stereoselectivities that are in very good agreement with the experimental values. The nature of the diene Cl substituent has virtually no influence upon reactivity or trans/cis-stereoselectivity whereas terminal C9 dienophile substituents have a substantial effect on both the reactivity and stereoselectivity of these IMDA reactions. The TSs highlight contributions from strain in the developing tether-containing ring, and steric and electronic effects between tether and dienophile substituents, thus providing insight into the origins of IMDA reactivity and stereoselectivity.
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