Lewis Base-Catalyzed Sequential [2 + 3]/[4 + 4] Annulations of α-Allylic Allenoates and Aldimine Esters: Construction of Functionalized Pyrrole-Fused Eight-Membered O-Heterocycles
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The efficient construction of eight-membered rings has gained significant attention due to their widespread applications in natural products and pharmaceuticals. However, the synthesis of these molecules, especially by organocatalytic strategies, remains a for... ...
