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Hydrolytic Enantioselective Protonation of Cyclic Dienyl Esters and a β-Diketone with Chiral Phase-Transfer Catalysts

✍ Scribed by Yamamoto, Eiji; Gokuden, Daichi; Nagai, Ayano; Kamachi, Takashi; Yoshizawa, Kazunari; Hamasaki, Akiyuki; Ishida, Tamao; Tokunaga, Makoto


Book ID
118058722
Publisher
American Chemical Society
Year
2012
Tongue
English
Weight
684 KB
Volume
14
Category
Article
ISSN
1523-7060

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Highly enantioselective synthesis of cyc
✍ E.J Corey; Mark C Noe; Feng Xu 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 247 KB

The chiral quaternary ammonium salt 1 serves as phase transfer catalyst for the enantioselective conversion of the glycine derivative 2 to a variety of cyclic and acyclic chiral oramino acids with enantioselectivities as high as 200:1 in alkylation and Michael addition reactions.