Prins Cyclization Catalyzed by a Fe(III)/TMS System: the Oxocarbenium Ion Pathway versus the [2+2] Cycloaddition

This research was supported by the Spanish MINECO, co‐financed by the European Regional Development Fund (ERDF) and FEDER (CTQ2011‐28417‐C02–01/BQU, , CTQ2011‐22653, CTQ2013‐44303‐P) and IMBRAIN project (FP7‐REGPOT‐2012‐CT2012‐31637‐IMBRAIN), funded under the 7th Framework Programme (CAPACITIES). S.J.P. thanks the Spanish MINECO for a F.P.U fellowship. The research leading to these results received funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007‐2013 under REA grant agreement no. 623155 to P.O.M).