Easy One-Pot Synthesis of Fused Heterocycles from 1,2-Diaza-1,3-dienes

[摘要]：A base-promoted chemoselective synthesis of 6a-hydroxy-6,6a-dihydro-1H-thieno[3,4-b] pyrrole-3,3a(4H)-dicarboxylates, 5-(2-furylmethyl)-6a-hydroxy-6-oxo-4,5,6,6a-tetrahydropyrrolo[3,4-b] pyrrole-3,3a(1H)-dicarboxylates, and 5-benzyl-7a-hydroxy-1,4,5,6,7,7a-hexahydro-3aH-pyrrolo-[3,2-c] pyridine-3,3a-dicarboxylates starting from diazadienes and heterocycles containing an activated methine group has been developed. This transformations proceeds by Michael addition/5-exo cyclization sequence.

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