At the request of the author, the paper [1] is retracted. It was previously published in Green Chemistry [2] and the conference covers only original work. We apologize to readers for any inconvenience caused. MDPI is a member of the Committee on Publication Ethics (COPE) and takes seriously the responsibility to enforce strict ethical policies and standards. The published article [1] is retracted and shall be marked accordingly.

Reference

1. Cirujano, F. Ionic liquids vs. microporous solids as reusable reaction media for the catalytic C–H functionalization of indoles with alcohols. In Proceedings of The 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November–15 December 2019; Sciforum Electronic Conference Series, doi: 10.3390/ecsoc-22-05655
2. Cirujano, F.; Stalpaert, M; De Vos, D.E. Ionic liquids vs. microporous solids as reusable reaction media for the catalytic C–H functionalization of indoles with alcohols. Green Chem. 2018, 20,2481–2485.