Escalante Escalante, Luz ElizabethGonzález Rodríguez, CarlosVarela Carrete, Jesús ÁngelSaá Rodríguez, Carlos2020-10-052020-10-052012Escalante, L., González-Rodríguez, C., Varela, J. A., Saá, C. (2012). Tandem Brønsted Acid Promoted and Nazarov Carbocyclizations of Enyneacetals to Hydroazulenones. Angew. Chem. Int. Ed., 51, 49, 12316-123201433-7851http://hdl.handle.net/10347/23340NOTICE: This is the peer reviewed version of the following article:Escalante, L., González-Rodríguez, C., Varela, J. A., Saá, C. (2012). Tandem Brønsted Acid Promoted and Nazarov Carbocyclizations of Enyneacetals to Hydroazulenones. Angew. Chem. Int. Ed., 51, 49, 12316-12320. [doi: 10.1002/anie.201205823]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.A new and efficient metal-free entry to hydroazulenones is reported. Enyneacetals were easily converted into hydroazulene skeletons by tandem Brønsted-acidpromoted carbocyclizations followed by stereospecific Nazarov cyclizations. The versatility of this transformation also allowed assembly of interesting heteroaromatic tricyclic systems.engCopyright © 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archivingBrönsted-acidCarbocyclizationsEnynesHydroazulenoneNazarov cyclizationsjournal article10.1002/anie.2012058231521-3773open access