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High Diastereoselectivity Induced by a Fluorous Alkyl Group in the Asymmetric Michael Reaction of Nitroalkenes Catalyzed by a Prolinol Methyl Ether

High Diastereoselectivity Induced by a Fluorous Alkyl Group in the Asymmetric Michael Reaction of... The fluorous prolinol methyl ether was prepared through the perfluorohexylethylation of (S)‐1‐tert‐butyl 2‐methyl pyrrolidine‐1,2‐dicarboxylate using commercially available perfluorohexylethyl iodide, methylation, and deprotection in three steps in 19 % overall yield. In the asymmetric Michael addition reaction of nitrostyrene with propanal, the diastereoselectivity (syn/anti=92:8) with the prepared fluorous prolinol methyl ether was much higher than that (syn/anti=87–80:13–20) with nonfluorinated prolinol methyl ethers that have two n‐octyl groups or two phenyl groups in place of perfluorohexylethyl groups. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Journal of Organic Chemistry Wiley

High Diastereoselectivity Induced by a Fluorous Alkyl Group in the Asymmetric Michael Reaction of Nitroalkenes Catalyzed by a Prolinol Methyl Ether

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References (52)

Publisher
Wiley
Copyright
Copyright © 2013 Wiley Subscription Services, Inc., A Wiley Company
ISSN
2193-5807
eISSN
2193-5815
DOI
10.1002/ajoc.201300171
Publisher site
See Article on Publisher Site

Abstract

The fluorous prolinol methyl ether was prepared through the perfluorohexylethylation of (S)‐1‐tert‐butyl 2‐methyl pyrrolidine‐1,2‐dicarboxylate using commercially available perfluorohexylethyl iodide, methylation, and deprotection in three steps in 19 % overall yield. In the asymmetric Michael addition reaction of nitrostyrene with propanal, the diastereoselectivity (syn/anti=92:8) with the prepared fluorous prolinol methyl ether was much higher than that (syn/anti=87–80:13–20) with nonfluorinated prolinol methyl ethers that have two n‐octyl groups or two phenyl groups in place of perfluorohexylethyl groups.

Journal

Asian Journal of Organic ChemistryWiley

Published: Dec 1, 2013

Keywords: ; ; ; ;

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