Abstract
A [3 + 4] annulation of α-substituted allenes and Schiff bases is reported. This methodology serves as a conduit for the construction of a series of biologically important benzazepine derivatives in good to excellent yields under mild conditions by an unprecedented mode involving β′-carbon of α-substituted allenes and the proposed mechanism is supported by capturing the intermediate. Moreover, this class of benzazepine derivatives exhibited potential ability of cytotoxicity toward cancer cells.
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