Highly stereoselective ring expansion reactions mediated by attractive cation-n interactions

Authors :: Day, V.W.
English, D.G.
Katz, C.E.
Aubé, J.
Poutsma, J.L.
Smith, S.
Neuenswander, B.
Ribelin, T.
Manukyan, A.K.
Publication Year :: 2008
Publisher :: The University of North Carolina at Chapel Hill University Libraries, 2008.
Abstract: Gaining control: An attractive electrostatic force stabilizes the conformation of an intermediate (see scheme; n=nonbonded electron), thus controlling the leaving group configuration to give superior diastereoselectivity in an asymmetric ring expansion.

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