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ChemInform Abstract: Organocatalytic Asymmetric Michael Addition of Pyrazolin-5-ones to Nitroolefins with Bifunctional Thiourea: Stereocontrolled Construction of Contiguous Quaternary and Tertiary Stereocenters.

✍ Scribed by Yu-Hua Liao; Wen-Bing Chen; Zhi-Jun Wu; Xi-Lin Du; Lin-Feng Cun; Xiao-Mei Zhang; Wei-Cheng Yuan

Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
41
Category
Article
ISSN
0931-7597

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Organocatalytic Asymmetric Michael Addit
Organocatalytic Asymmetric Michael Addition of Pyrazolin-5-ones to Nitroolefins with Bifunctional Thiourea: Stereocontrolled Construction of Contiguous Quaternary and Tertiary Stereocenters
✍ Yu-Hua Liao; Wen-Bing Chen; Zhi-Jun Wu; Xi-Lin Du; Lin-Feng Cun; Xiao-Mei Zhang; 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB 👁 1 views

## Abstract The first organocatalytic diastereo‐ and enantioselective Michael addition reaction of 4‐substituted‐pyrazolin‐5‐ones to nitroolefins has been developed with a chiral bifunctional thiourea as organocatalyst. A wide variety of desired multi‐substituted pyrazolin‐5‐one derivatives with co