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Enantioselective Conjugate Addition of Hydrazines to α,β-Unsaturated Imides. Synthesis of Chiral Pyrazolidinones.

✍ Scribed by Mukund P. Sibi; Takahiro Soeta

Book ID
111699729
Publisher
John Wiley and Sons
Year
2007
Weight
27 KB
Volume
38
Category
Article
ISSN
0931-7597

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📜 SIMILAR VOLUMES

Diastereoselective conjugate addition of
Diastereoselective conjugate addition of thiols to camphor pyrazolidinone derived chiral α,β-unsaturated carbonyls: synthesis of β-mercaptocarboxylic acid derivatives
✍ Chun-Hui Lin; Kung-Shuo Yang; Jia-Fu Pan; Kwunmin Chen 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 228 KB

Reaction of chiral a,b-unsaturated carboxylic acid derivatives 2a±e derived from camphor pyrazolidinone 1 with thiols aords b-mercaptocarboxylic acid derivatives 3a±e with a wide range of stereoselectivities (up to >90% de). The stereoselectivity as a function of Lewis acid is described. The auxilia