Concept

Carbene

Related publications (121)

Diaminophosphine Oxide Ligand Enabled Asymmetric Nickel-Catalyzed Hydrocarbamoylations of Alkenes

Nicolai Cramer, Pavel Alexandrovich Donets

Chiral trivalent phosphorus species are the dominant class of ligands and the key controlling element in asymmetric homogeneous transition-metal catalysis. Here, novel chiral diaminophosphine oxide ligands are described. The arising catalyst system with ni ...

Amer Chemical Soc2013

Activation of Nitrous Oxide by Dinuclear Ruthenium Complexes

Rosario Scopelliti, Kay Severin, Euro Solari, Alexander Tskhovrebov

The dinuclear Ru(II) complexes (arene)Ru(μ-Cl)3RuCl(C2H4)(PCy3) (arene = p-cymene or 1,3,5-C6H3iPr3) react with N2O under mild conditions to give OPCy3 and the trinuclear complexes (arene)Ru(μ-Cl)3Ru(μ-Cl)3Ru(arene). The N-heterocyclic carbene complex (p-c ...

American Chemical Society2012

Near-UV to red-emitting charged bis-cyclometallated iridium(III) complexes for light-emitting electrochemical cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Davide Di Censo

Herein we report a series of charged iridium complexes emitting from near-UV to red using carbene-based (NC)-C-boolean AND: ancillary ligands. Synthesis, photophysical and electrochemical properties of this series are described in detail together with X-ra ...

Royal Society of Chemistry2012

Sequential N–O and N–N Bond Cleavage of N-Heterocyclic Carbene-Activated Nitrous Oxide with a Vanadium Complex

Rosario Scopelliti, Kay Severin, Matthew Wodrich, Euro Solari, Alexander Tskhovrebov

Chemically induced bond cleavage of nitrous oxide typically proceeds by rupture of the N–O bond with concomitant O-atom transfer and liberation of dinitrogen. On a few occasions, N–N bond scission has been observed instead. We report a reaction sequence in ...

2012

Covalent Capture of Nitrous Oxide by N-Heterocyclic Carbenes

Rosario Scopelliti, Kay Severin, Matthew Wodrich, Euro Solari, Alexander Tskhovrebov

A good catch: N-heterocyclic carbenes (NHCs) form stable adducts with nitrous oxide (N2O) under mild reaction conditions. The adducts display unique reactivity as evidenced by an alkylation reaction which leads to a rupture of the NN bond. ...

Wiley-Blackwell2012

Catalytic Formal Homo-Nazarov Reaction and Other Cyclizations of Cyclopropanes

Filippo De Simone

The increasing progress in medicinal chemistry and chemical biology requires more versatile synthetic strategies for the generation of libraries of active compounds and theirs analogues. A wide range of biologically active natural and synthetic compounds c ...

EPFL2012

Exploiting the Divergent Reactivity of Isocyanoacetates: One-Pot Three-Component Synthesis of Functionalized Angular Furoquinolines

Jieping Zhu

A one-pot, three-component synthesis of polysubstituted furo[2,3-c] quinoline 1 was developed based on the new reactivity profile of alpha-(4-nitrophenyl)-alpha-isocyanoacetates. Simply mixing aldehydes 2, ortho-alkynylanilines 3, and alpha-(4-nitrophenyl) ...

2012

Indole Alkaloids Synthesis via a Selective Cyclization of Aminocyclopropanes

Jérôme Waser, Filippo De Simone

The continuous progress in medicinal chemistry requires more versatile synthetic strategies for the generation of large libraries of active compounds and their analogues. As a result, the research for new effective cyclization and cycloaddition reactions i ...

2012

Sequential ATRA-Reductive Cyclopropanation Reactions with a Ruthenium Catalyst in the Presence of Manganese

Kay Severin, Charlotte Buron

Atom-transfer radical addition (ATRA) reactions of ethyl trichloroacetate, dichloromalononitrile, or diethyl 2,2-dichloromalonate with olefins followed by dechlorination have provided functionalized cyclopropanes in one step. The RuIII complex [Cp*RuCl2(PP ...

Wiley-Blackwell2011

Exploiting the Divergent Reactivity of a-Isocyanoacetate: Multicomponent Synthesis of 5-Alkoxyoxazoles and Related Heterocycles

Jieping Zhu

A novel multicomponent synthesis of 5-alkoxyoxazoles, based on a new reactivity profile of a-isocyanoacetates, is described. Thus, simply heating a solution of amine, aldehyde, and a-(EWG-phenyl)-a-isocyanoacetate or a-(4-pyridyl)-a isocyano acetate (EWG=e ...

2011

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