Retraction: 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�?5 December 2019; Sciforum Electronic Conference Series, doi: 10.3390/ecsoc-22-05655 - Retraction Notice | RetractBase