Silanes in organic synthesis. 8. Preparation of vinylsilanes from ketones and their regiospecific cyclopentenone annulation
作者:Leo A. Paquette、William E. Fristad、David S. Dime、Thomas R. Bailey
DOI:10.1021/jo01303a020
日期:1980.7
1,2-Transposition of ketones via vinylsilanes
作者:William E. Fristad、Thomas R. Bailey、Leo A. Paquette
DOI:10.1021/jo00402a043
日期:1978.4
Synthesis of Vinylsilanes from Benzenesulfonylhydrazones
作者:T. CHAN、A. BALDASSARRE、D. MASSUDA
DOI:10.1055/s-1976-24205
日期:——
Lewis Acid-Catalyzed Tandem Diels−Alder Reaction/Retro-Claisen Rearrangement as an Equivalent of the Inverse Electron Demand Hetero Diels−Alder Reaction
作者:Huw M. L. Davies、Xing Dai
DOI:10.1021/jo050821s
日期:2005.8.1
A highly stereoselective formal inverse electron demand hetero Diels−Alder reaction (HDA) occurs on reaction of 2-aryl-α,β-unsaturated aldehydes with cyclopentadiene. The major pathway for this transformation is shown to be a Lewisacid-catalyzed tandem Diels−Alder reaction/retro-Claisen rearrangement.
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