S1 Copper-catalyzed C-H ethoxycarbonyldifluoromethylation of imidazoheterocycles Subhajit Mishra, Pallab Mondal, Monoranjan Ghosh, Susmita Mondal and Alakananda Hajra* Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India; Tel./Fax: +913463 261526; E-mail: alakananda.hajra@visva-bharati.ac.in Table of Contents: Contents: Page No. 1. General information………………………………………………… S2 2. Typical experimental procedure…………………………………….. S2 3. Characterization data for the synthesized products………………… S3-S10 4. NMR spectra for the synthesized products…………………………… S11-S56 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2015