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POSS supported diarylprolinol silyl ether as an efficient and recyclable organocatalyst for asymmetric Michael addition reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
50477 46796 2015 5 PDF Available
Title
POSS supported diarylprolinol silyl ether as an efficient and recyclable organocatalyst for asymmetric Michael addition reactions
Abstract

•Jørgensen–Hayashi's catalyst supported on POSS was prepared for the first time.•The POSS supported catalyst promoted the asymmetric Michael addition reactions efficiently.•The adduct products were obtained in good yields with good to excellent stereoselectivities.•Catalyst was recycled at least eight cycles without loss of its activity.

The POSS supported (S)-α,α-diphenylprolinol trimethylsilyl ether catalyst was synthesized and applied in the asymmetric Michael addition reactions of aldehydes and arylnitroalkenes, providing the products in good yields with excellent enantioselectivities and good diastereoselectivities. The POSS supported catalyst can be readily recycled and reused for further transformations at least eight cycles without observing significant decrease in yield and stereoselectivity.

Graphical abstractThe POSS supported (S)-α,α-diphenylprolinol trimethylsilyl ether catalyzes the asymmetric Michael addition reactions of aldehydes and arylnitroalkenes to provide the products in good yields with excellent enantioselectivities and good diastereoselectivities.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
POSS; Supported; Diarylprolinol silyl ether; Asymmetric Michael addition; Recyclable
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POSS supported diarylprolinol silyl ether as an efficient and recyclable organocatalyst for asymmetric Michael addition reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 62, 5 March 2015, Pages 34–38
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us