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ABSTRACT
A simple and facile approach for the synthesis of various structurally different tricyclic bent oxepine frameworks from a readily accessible precursor has been introduced. The synthesis of substituted oxepine derivative involved Pd(0)-catalyzed Heck reaction. This methodology enriches the literature for the large ring formation.
GRAPHICAL ABSTRACT
Acknowledgment
We are especially thankful to the Department of Chemistry, IIT Kharagpur, and the other faculty members of Haldia Government College.