Chiral bis(imidazolidine)pyridine-cu complex-catalyzed enantioselective [3+2]-cycloaddition of azomethine imines with propiolates |
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| Authors: | Arai Takayoshi Ogino Yuta |
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| Institution: | Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan. tarai@faculty.chiba-u.jp |
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| Abstract: | 3+2] Cycloaddition of azomethine imines with electron-deficient terminal alkynes was smoothly catalyzed by a chiral bis(imidazolidine)pyridine-CuOAc complex to give bicyclic pyrazolo1,2-a]pyrazolone derivatives with up to 74% ee. |
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