Journal
TETRAHEDRON LETTERS
Volume 53, Issue 51, Pages 6919-6922Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.10.019
Keywords
[2+2]; Terpenoid; Cyclobutane; Carbocation; Quantum calculations
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Funding
- National Science Foundation
- Pittsburgh Supercomputer Center
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Results from density functional theory calculations on a proton-promoted [2+2] cycloaddition to form plumisclerin A's cyclobutane ring are described. On the basis of these results, it is proposed that protonation allows for an energetically viable stepwise cycloaddition that provides an alternative to photochemical cyclobutane formation. (C) 2012 Elsevier Ltd. All rights reserved.
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