A Common Way to Construct Arene-Fused Seven-Membered Nitrogen Heterocycles

Imines reacted with seven-membered cyclic anhydrides (prepared from respective dicarboxylic acids by recently discovered in situ cyclodehydration protocol) via the Castagnoli-Cushman reaction pathway to provide privileged seven-membered arene-fused nitrogen heterocylic compounds with reagent-controlled diversity of the skeleton and peripheral groups.

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