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ChemInform Abstract: Stereoselective Construction of a 5-Aza-spiro[2,4]heptane Motif via Catalytic Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Ylides and Ethyl Cyclopropylidene Acetate.

✍ Scribed by Tang-Lin Liu; Zhao-Lin He; Hai-Yan Tao; Yue-Peng Cai; Chun-Jiang Wang

Publisher: John Wiley and Sons
Year: 2011
Weight: 33 KB
Volume: 42
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201126107

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✍ Tang-Lin Liu; Zhao-Lin He; Qing-Hua Li; Hai-Yan Tao; Chun-Jiang Wang 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 46 KB 👁 1 views

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Catalytic Asymmetric Construction of Spirocycles Containing Pyrrolidine Motifs and Spiro Quaternary Stereogenic Centers via 1,3-Dipolar Cycloaddition of Azomethine Ylides with 2-Alkylidene-Cycloketones

✍ Tang-Lin Liu; Zhao-Lin He; Qing-Hua Li; Hai-Yan Tao; Chun-Jiang Wang 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 595 KB

## Abstract The first catalytic asymmetric 1,3‐dipolar cycloaddition of azomethine ylides with various sterically hindered α,α,β‐trisubstituted 2‐alkylidene‐cycloketones has been developed successfully with silver acetate/TF‐BiphamPhos complex for the construction of spiro heterocyclic compounds co