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Asymmetric Hydrophosphonylation of α-Ketoesters Catalyzed by Cinchona-Derived Thiourea Organocatalysts

✍ Scribed by Fei Wang; Xiaohua Liu; Xin Cui; Yan Xiong; Xin Zhou; Xiaoming Feng

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
238 KB
Volume
15
Category
Article
ISSN
0947-6539

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✍ José Alemán; Andrea Milelli; Silvia Cabrera; Efraim Reyes; Karl Anker Jørgensen 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 322 KB 👁 2 views

## Abstract An easy and simple synthetic approach to optically active α,α‐quaternary α‐amino acids using asymmetric organocatalysis is presented. The addition of oxazolones to nitroalkenes catalyzed by thiourea cinchona derivatives provides the corresponding α,α‐quaternary α‐amino acid derivatives