RT Journal Article
T1 AgNO3·SiO2: Convenient AgNPs source for the sustainable hydrofunctionalization of allenyl-indoles using heterogeneous catalysis
A1 Luna Costales, Amparo
A1 Herrera García, Fernando
A1 Murillo Lizcano, Alejandro
A1 Higuera Velasco, Sheila
A1 Fernández López, Israel
A1 Almendros Requena, Pedro
AB Supported silver nitrate in silica gel has been demonstrated as an excellent heterogeneous catalytic system for the selective hydroarylation of indole-tethered allenes, with a selectivity reversal in comparison with homogeneous gold catalysis. In this way, the controlled preparation of 1,2-disubstituted-9H-carbazoles, 1,2-disubstituted-4,9-dihydro-1H-carbazoles, and 2,4-disubstituted-spiro[cyclopentane-1,3′-indol]-3-enes has been accomplished. Control experiments supported by Density Functional Theory calculations strongly suggest that indole-tethered allenes react through a 5-endo-dig-carbometallation/rearrangement sequence, which contrasts to the previously reported 6-endo-dig-carbometallation pathway promoted by [Au(I)]-catalysts in related systems.
PB Elsevier
SN 0021-9517
YR 2020
FD 2020-06-12
LK https://hdl.handle.net/20.500.14352/115793
UL https://hdl.handle.net/20.500.14352/115793
LA eng
NO Luna A, Herrera F, Higuera S, Murillo A, Fernández I, Almendros P. AgNO3·SiO2: Convenient AgNPs source for the sustainable hydrofunctionalization of allenyl-indoles using heterogeneous catalysis. Journal of Catalysis. 2020. 389, 432–439..
NO The energy-dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), the SAED pattern, TEM imaging and micro-Raman spectroscopy are described in the Supporting Information.
NO Ministerio de Ciencia e Innovación (España)
NO Ministerio de Economía y Competitividad (España)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 8 abr 2025