Abstract
The reaction of isomeric 2/3-bromomethylindoles containing masked aldehydic function with heteroarenes in the presence of Zn(OTf)2 as a catalyst in 1,2-DCE at room temperature led to the formation of benzo[b]-hetero annulated carbazoles.
Graphical Abstract
Acknowledgements
The authors thank the Department of Science and Technology Funds for the Improvement of Science and Technology (DST-FIST) New Delhi for NMR and HRMS facilities.