alexa High stereoselectivity on low temperature Diels-Alder reactions.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Theoretical and Computational Science

Author(s): da Silva Filho LC, Lacerda Jnior V, Constantino MG, da Silva GV, Invernize PR

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Abstract We have found that some of the usually poor dienophiles (2-cycloenones) can undergo Diels-Alder reaction at -78 degrees C with unusually high stereoselectivity in the presence of niobium pentachloride as a Lewis acid catalyst. A remarkable difference in reaction rates for unsubstituted and alpha- or beta-methyl substituted 2-cycloenones was also observed.
This article was published in Beilstein J Org Chem and referenced in Journal of Theoretical and Computational Science

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