Asymmetric Diels−Alder Reactions Catalyzed by a Triflic Acid Activated Chiral Oxazaborolidine

This paper reports a new method for the generation of chiral Lewis superacids by protonation of a non-Lewis acidic oxazaborolidine (1) with triflic acid. The resulting cationic species (3) are powerful and highly enantioselective catalysts for the Diels−Alder reaction of various 1,3-dienes with α,β-...

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Veröffentlicht in:	Journal of the American Chemical Society 2002-04, Vol.124 (15), p.3808-3809
Hauptverfasser:	Corey, E. J, Shibata, Takanori, Lee, Thomas W
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Exact sciences and technology Organic chemistry
Online-Zugang:	Volltext
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