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Breaking Down Barriers: The Liaison Between Sigmatropic Shifts, Electrocyclic Reactions, and Three‐Center Cations
Author(s) -
Hoffmann Roald,
Tantillo Dean J.
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200352853
Subject(s) - sigmatropic reaction , information center , electrocyclic reaction , center (category theory) , simple (philosophy) , chemistry , state (computer science) , proton , physics , computational chemistry , stereochemistry , computer science , crystallography , mathematics , philosophy , nuclear physics , algorithm , epistemology , mathematics education , bicyclic molecule , educational research
Almost indistinguishable transition‐state (TS) geometries, which differ only by the presence or absence of a simple proton, were found for electrocyclic and sigmatropic rearrangements with the same electron count (see picture).