Zheng, YongkunEspinosa, MiguelMon-Conejero, MartaLeyva Perez, Antonio2025-01-032025-01-032024-120021-9517https://riunet.upv.es/handle/10251/213371[EN] Carbenes are among the most powerful reactants in organic synthesis, with capacity to insert into a variety of otherwise stable bonds, and generate two new bonds in a straightforward manner. However, the intrinsic instability of such carbenes makes them to be catalytically generated, in-situ, from precursors such as diazocarbonyl compounds, and the catalyst, in turn, also controls the subsequent insertion reaction. The catalyst is generally a metal complex in solution, mainly Cu, Ag or Rh, but also others, including protons in rare cases. Here we show that carbenes are generated, stabilized and inserted into C-C, C-H, O-H, N-H, Si-H and O-O bonds after reacting diazocarbonyl compounds with catalytic amounts of metal-free, commercially available dealuminated H-Y zeolites. These results open the way to design carbene-mediated organic reactions on readily available and reusable catalytic solids without involving metals.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)Carbene insertion reactionsDiazocarbonyl compoundsDealuminated H-Y zeoliteHeterogeneous catalysisSolid Bronsted acidReusable catalystOrganic synthesisAlkene cyclopropanationBuchner reactionDioxygen insertion reactionArtículo10.1016/j.jcat.2024.115835Abierto