Cinchona Alkaloid Catalyzed Enantioselective [4 + 2] Annulation of Allenic Esters and in Situ Generated ortho-Quinone Methides: Asymmetric Synthesis of Functionalized Chromans.
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Hanmin Huang | Chun‐An Fan | Xu Yan | Wen-Dao Chu | Liang-Liang Yang | Yuhua Deng | Ke‐Yin Yu | Xiang‐Zhi Zhang