A Highly Diastereo- and Enantioselective Synthesis of Tetrahydroquinolines: Quaternary Stereogenic Center Inversion and Functionalization
- 16 May 2013
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 135 (22), 8193-8196
- https://doi.org/10.1021/ja4040945
Abstract
Tetrahydroquinolines containing two quaternary stereogenic centers were synthesized with excellent ee and dr via a four-component cyclization reaction catalyzed by a chiral phosphoric acid. High chemoselectivity was achieved by differentiating anilines with similar reactivities to yield diverse “hybrid” products. The chirality of the quaternary C4 atom of the 4-aminotetrahydroquinoline products was found to undergo highly stereoselective inversion, enabling facile functionalization using a wide range of nucleophiles (C, O, N, and S).Keywords
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