Publisher： John Wiley & Sons Inc
E-ISSN： 1521-3773|54|27|7847-7851
ISSN： 1433-7851
Source： ANGEWANDTE CHEMIE INTERNATIONAL EDITION, Vol.54, Iss.27, 2015-06, pp. : 7847-7851
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Abstract
AbstractThe first highly enantioselective Brønsted acid catalyzed intramolecular hydroamination of alkenes enables the efficient construction of a series of chiral (spirocyclic) pyrrolidines with an α‐tetrasubstituted carbon stereocenter with excellent functional group tolerance. A unique feature of this strategy is the use of a thiourea group acting as both the activating and the directing group through cooperative multiple hydrogen bonding with a Brønsted acid and the double bond. The utility of this method is highlighted by the facile construction of chiral synthetic intermediates and important structural motifs that are widely found in organic synthesis.
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