S
Sandra Niembro
Researcher at Autonomous University of Barcelona
Publications - 14
Citations - 503
Sandra Niembro is an academic researcher from Autonomous University of Barcelona. The author has contributed to research in topics: Catalysis & Heck reaction. The author has an hindex of 9, co-authored 14 publications receiving 473 citations. Previous affiliations of Sandra Niembro include Sapienza University of Rome.
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Journal ArticleDOI
Perfluoro-tagged, phosphine-free palladium nanoparticles supported on silica gel: application to alkynylation of aryl halides, Suzuki–Miyaura cross-coupling, and Heck reactions under aerobic conditions
Roberta Bernini,Sandro Cacchi,Giancarlo Fabrizi,Giovanni Forte,Francesco Petrucci,Alessandro Prastaro,Sandra Niembro,Alexandr Shafir,Adelina Vallribera +8 more
TL;DR: Pdnp–B in the synthesis of 2,3-disubstituted indoles from 2-(alkynyl)trifluoroacetanilides and aryl halides and the Suzuki–Miyaura cross-coupling is reported.
Journal ArticleDOI
Dehalogenation and Hydrogenation of Aromatic Compounds Catalyzed by Nanoparticles Generated from Rhodium Bis(imino)pyridine Complexes
María L. Buil,Miguel A. Esteruelas,Sandra Niembro,Montserrat Oliván,Lars Orzechowski,Cristina Pelayo,Adelina Vallribera +6 more
TL;DR: In this paper, the MICINN of Spain (Project Nos. CTQ 2008-00810, CTQ2008-05409- C02-01 and Consolider Ingenio 2010 CSD2007-00006), the Diputació General de Aragon (E35), the DURSIGeneralitat de Catalunya (SGR 2009-SGR1441), and the European Social Fund is acknowledged.
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The Heck Reaction of Allylic Alcohols Catalyzed by Palladium Nanoparticles in Water: Chemoenzymatic Synthesis of (R)-(−)-Rhododendrol
Alberto Boffi,Sandro Cacchi,Pierpaolo Ceci,Roberto Cirilli,Giancarlo Fabrizi,Alessandro Prastaro,Sandra Niembro,Alexandr Shafir,Adelina Vallribera +8 more
TL;DR: The Heck reaction of aryl iodides with allylic alcohols under aerobic conditions in water is described in this article, and a two-step one-pot process, involving a Heck reaction followed by an enantioselective enzyme-catalyzed reduction, is applied to the synthesis of (R)-(−)-rhododendrol.
Journal ArticleDOI
Palladium nanoparticles supported on an organic-inorganic fluorinated hybrid material. Application to microwave-based heck reaction.
TL;DR: Recycling studies have shown that the catalyst can be readily recovered and reused several times without significant loss of activity, and reactions and recovery of the solid-supported palladium catalyst system can be carried out in the presence of air.
Journal ArticleDOI
Phosphine-Free Perfluoro-Tagged Palladium Nanoparticles Supported on Fluorous Silica Gel: Application to the Heck Reaction†
Roberta Bernini,Sandro Cacchi,Giancarlo Fabrizi,Giovanni Forte,Sandra Niembro,Francesco Petrucci,Roser Pleixats,Alessandro Prastaro,Rosa María Sebastián,Roger Soler,Mar Tristany,Adelina Vallribera +11 more
TL;DR: The immobilization of phosphine-free perfluoro-tagged palladium nanoparticles Pd-1 on fluorous silica gel (FSG) and their utilization in the Heck reaction have been investigated and high yield vinylic substitution products have been obtained.