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DOI: 10.1055/s-2007-980384
Lewis and Brønsted Acid Catalyzed Allylboration of Carbonyl Compounds: From Discovery to Mechanism and Applications
Publication History
Publication Date:
25 June 2007 (online)
Abstract
The recent development of Lewis and Brønsted acid catalyzed manifolds for the allylboration of carbonyl compounds has opened doors towards an ideal carbonyl allylation methodology using stable and nontoxic allylic boronates as reagents. This Account relates our laboratory’s discovery of acid-catalyzed allylborations, mechanistic investigations of these new processes, and ongoing efforts by our group and others towards a general catalytic enantioselective allylboration methodology.
1 Introduction
2 Discovery and Development of Catalyzed Allylborations with 2-Alkoxycarbonyl Allylic Boronates
2.1 Lewis Acid Catalyzed Allylboration
2.2 Brønsted Acid Catalyzed Allylboration
3 Mechanistic Considerations
4 Stoichiometric Approaches to Enantiocontrolled Allylboration of Aldehydes
5 Catalytic Methods for Enantioselective Allylborations
6 Lewis Acid Catalyzed Additions of α-Substituted Allylic Boronates
7 Conclusion
Key words
allylations - boron - catalysis - Lewis acids - stereoselectivity
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