Lewis Acid-Mediated Unprecedented Ring-Opening Rearrangement of 2-Aryl-N-tosylazetidines to Enantiopure (E)-Allylamines
Organic Letters2007Vol. 9(26), pp. 5441–5444
Citations Over TimeTop 16% of 2007 papers
Abstract
A highly efficient strategy for Cu(OTf)2-mediated ring-opening of 2-aryl-N-tosylazetidines in polar and coordinating solvents followed by an unprecedented rearrangement to substituted achiral and chiral (E)-allylamines (ee >99%) is reported. The methodology has been applied for the synthesis of gamma-unsaturated-beta-amino acids. A plausible mechanism for the rearrangement is also described.
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