Investigation of the mechanisms of ene reactions of carbonyl enophiles by intermolecular and intramolecular hydrogen-deuterium isotope effects: partitioning of reaction intermediates
作者:Zhiguo Song、Peter Beak
DOI:10.1021/ja00178a042
日期:1990.10
concerted mechanism for each reaction. In the ene reactions of 1 with 8 catalyzed by tin tetrachloride and of 1 with acetylium hexachloroantimonate, both the intermolecular and intramolecularisotopeeffects are small, results that are inconsistent with either a stepwise reaction via an equilibrating intermediate or a concerted mechanism. The ene reaction of 2 with acetic anhydride catalyzed by zinc chloride