Fernández Fernández, DavidCasanova González, NoeliaMascareñas Cid, José LuisGulías Costa, Moisés2019-04-082019-04-082019F. Fernández, D., Casanova, N., Mascareñas, J., & Gulías, M. (2019). Rhodium(III)-Catalyzed Intramolecular Annulations of Acrylic and Benzoic Acids to Alkynes. ACS Omega, 4(4), 6257-6263. doi: 10.1021/acsomega.9b00022http://hdl.handle.net/10347/18551Rh(III) catalysts can promote a formal (4 + 2) intramolecular oxidative annulation between acrylic or benzoic acid derivatives and alkynes. The reaction, which involves a C–H activation process, allows for a rapid assembly of appealing bicyclic pyran-2-ones and tricyclic isocoumarin derivatives in moderate to good yields. The α-pyrone moiety of the products provides for further manipulations to obtain relatively complex cyclic skeletons in a very simple mannerengACS AuthorChoice - This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposesAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article10.1021/acsomega.9b000222470-1343open access