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Slideshow

Post-Transition State Bifurcations are Gaining Momentum - Implications for Synthesis and Biosynthesis

Prof. Dean J. Tantillo
Prof. Dean J. Tantillo
Department of Chemistry
University of California, Davis
Chemistry Building, Room 400
Organic Seminar

When the steepest descent pathway following a transition state structure for a given reaction splits in two, the reaction is said to involve a post-transition state bifurcation (PTSB). The presence of a PTSB presents complications for predicting product selectivity, in that a single transition state structure allows direct access to two products without any intervening minima (intermediates). Examples of reactions from organic synthesis and biosynthesis for which PTSBs have been proposed will be discussed, along with emerging guidelines for predicting the existence of a PTSB and the selectivity that arises from its presence.

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