RT Journal Article T1 Cobalt-Catalyzed (3 + 2) Cycloaddition of Cyclopropene-Tethered Alkynes: Versatile Access to Bicyclic Cyclopentadienyl Systems and Their CpM Complexes A1 Lázaro-Milla, Carlos A1 Concepcion, Eduardo da A1 Fernández, Israel A1 Mascareñas Cid, José Luis A1 López García, Fernando José K1 Cyclopropene K1 Cycloaddition K1 Cobalt K1 Catalysis K1 Cyclopentadienes K1 CpM catalysts AB Low-valent cobalt complexes can promote intramolecular (3 + 2) cycloadditions of alkyne-tethered cyclopropenes to provide bicyclic systems containing highly substituted cyclopentadienyl moieties with electronically diverse functional groups. The adducts can be easily transformed into new types of CpRh(III) and CpIr(III) complexes, which show catalytic activity in several relevant transformations. Preliminary computational (DFT) and experimental studies provide relevant information on the mechanistic peculiarities of the cobalt-catalyzed process and allow us to rationalize its advantages over the homologous rhodium-promoted reaction. PB American Chemical Society YR 2024 FD 2024 LK https://hdl.handle.net/10347/37629 UL https://hdl.handle.net/10347/37629 LA eng NO ACS Catal. 2024, 14, 15, 11574–11583 NO This work received financial support from Spanish grants (Grants PID2020-118579GB-I00, PID2019-108624RB-I00 and PID2022-139318NB-I00 funded by MCIN/AEI/10.13039/501100011033, ORFEO–CINQA network RED2022-134287-T), the Consellería de Cultura, Educación e Ordenación Universitaria (Grant ED431C 2021/25 and Grant ED431G 2019/03: Centro Singular de Investigación de Galicia accreditation 2023-2027, ED431G 2023/03, and predoctoral grant to EdC) and the European Union (European Regional Development Fund-ERDF corresponding to the multiannual financial framework 2014-2020) DS Minerva RD 24 abr 2026