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
![](/cms/asset/ca51d407-03c8-4987-892e-c2b5bd270d8c/lsyc_a_1142566_uf0001_oc.jpg)
Acknowledgment
We are especially thankful to the Department of Chemistry, IIT Kharagpur, and the other faculty members of Haldia Government College.