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Highly Enantioselective Brønsted Acid Catalyzed Heyns Rearrangement.
- Source :
- Angewandte Chemie; 1/2/2023, Vol. 135 Issue 1, p1-6, 6p
- Publication Year :
- 2023
-
Abstract
- Herein we report the first method for highly enantioselective Brønsted acid catalyzed Heyns rearrangements. These reactions, catalyzed by a chiral spiro phosphoric acid, afforded synthetically valuable chiral α‐aryl‐α‐aminoketones which cannot be obtained by means of previously reported Heyns rearrangement methods. This method features low catalyst loadings, high yields and high enantioselectivities, making these reactions highly practical. We used the method to efficiently synthesize various chiral amines, including some biologically active molecules. We experimentally proved that these acid‐catalyzed Heyns rearrangements proceeded via a proton‐transfer process involving an enol intermediate and the stereocontrol was realized during the proton‐transfer step. [ABSTRACT FROM AUTHOR]
- Subjects :
- BRONSTED acids
PHOSPHORIC acid
ORGANOCATALYSIS
CATALYSTS
Subjects
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 135
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 161064052
- Full Text :
- https://doi.org/10.1002/ange.202212976