Niobium Complexes in Organic Transformations: From Stoichiometric Reactions to Catalytic [2+2+2] Cycloaddition Reactions

Eco-friendly synthesis of pyridines via rhodium-catalyzed cyclization of diynes with oximes

(2015) Fen Xu et al.   GREEN CHEMISTRY

Ruthenium Alkylidene-Catalyzed Reaction of 1,6-Heptadiynes with Alkenes

(2015) Silvia Alvarez et al.   JOURNAL OF ORGANIC CHEMISTRY

NbCl5-mediated amidation of olefins with nitriles to secondary amides

(2015) Kaoru Yasuda et al.   JOURNAL OF ORGANOMETALLIC CHEMISTRY

Synthesis and characterization of hexaarylbenzenes with five or six different substituents enabled by programmed synthesis

(2015) Shin Suzuki et al.   Nature Chemistry

Mild Niobium-Catalyzed [2 + 2 + 2] Cycloaddition of Sila-triynes: Easy Access to Polysubstituted Benzosilacyclobutenes

(2015) Cédric Simon et al.   ORGANIC LETTERS

Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes

(2014) Jun Hara et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Regiocontrolled Gold-Catalyzed [2+2+2] Cycloadditions of Ynamides with Two Discrete Nitriles to Construct 4-Aminopyrimidine Cores

(2014) Somnath Narayan Karad et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Reactions of enaminones and related compounds with N,N-dimethylacetamide dimethyl acetal. A simple one-pot metal-free synthesis of polysubstituted benzene derivatives

(2014) Benjamin Prek et al.   TETRAHEDRON

Carbon–fluorine bond cleavage in fluoroarenes via a niobium(iii) imido complex: from stoichiometric to catalytic hydrodefluorination

(2014) Thomas L. Gianetti et al.   Chemical Science

Recent progress in the discovery of small molecules for the treatment of amyotrophic lateral sclerosis (ALS)

(2013) Allison S Limpert et al.   Beilstein Journal of Organic Chemistry

The iron-catalyzed construction of 2-aminopyrimidines from alkynenitriles and cyanamides

(2013) Timothy K. Lane et al.   CHEMICAL COMMUNICATIONS

Low-Valent Niobium-Catalyzed Intermolecular [2 + 2 + 2] Cycloaddition of tert-Butylacetylene and Arylnitriles to Form 2,3,6-Trisubstituted Pyridine Derivatives

(2013) Yasushi Satoh et al.   JOURNAL OF ORGANIC CHEMISTRY

Synthesis of Fully Substituted Pyrimidines

(2013) David Tejedor et al.   JOURNAL OF ORGANIC CHEMISTRY

Dinuclear niobium(III) and tantalum(III) complexes with thioether and selenoether ligands [{MIIIX2(L)}2(μ-X)2(μ-L)] (M = Nb, Ta; X = Cl, Br; L = R2S, R2Se): Syntheses, structures, and the optimal conditions and the mechanism of the catalysis for regioselective cyclotrimerization of alkynes

(2013) Masatoshi Matsuura et al.   JOURNAL OF ORGANOMETALLIC CHEMISTRY

Generation of low-valent alkoxy niobium from Nb(OEt)5 and Grignard reagents and their use as catalysts in the cyclotrimerization of isocyanates

(2013) Makoto Ozaki et al.   JOURNAL OF ORGANOMETALLIC CHEMISTRY

Salt-Free Reducing Reagent of Bis(trimethylsilyl)cyclohexadiene Mediates Multielectron Reduction of Chloride Complexes of W(VI) and W(IV)

(2013) Hayato Tsurugi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Reactions of Zirconocene Butadiyne or Monoyne Complexes with Nitriles: Straightfoward Synthesis of Functionalized Pyrimidines

(2013) Xu You et al.   ORGANOMETALLICS

Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of α,ω-Diynes with Nitriles

(2012) Gen Onodera et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Dehydrogenative Oxidation of Alcohols in Aqueous Media Using Water-Soluble and Reusable Cp*Ir Catalysts Bearing a Functional Bipyridine Ligand

(2012) Ryoko Kawahara et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Strategy for the Synthesis of Pyrimidine Derivatives: NbCl5-Mediated Cycloaddition of Alkynes and Nitriles

(2012) Yasushi Satoh et al.   ORGANOMETALLICS

Facile catalytic dehydration of fructose to 5-hydroxymethylfurfural by Niobium pentachloride

(2012) Neha Mittal et al.   TETRAHEDRON LETTERS

Chiral Phosphoric Acid Catalyzed Transfer Hydrogenation: Facile Synthetic Access to Highly Optically Active Trifluoromethylated Amines

(2011) Alexander Henseler et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

A Simple and Highly Efficient Iron Catalyst for a [2+2+2] Cycloaddition to Form Pyridines

(2011) Chunxiang Wang et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

A Serendipitous Discovery: Nickel Catalyst for the Cycloaddition of Diynes with Unactivated Nitriles

(2011) Puneet Kumar et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Enantioselective Construction of Bridged Multicyclic Skeletons: Intermolecular [2+2+2] Cycloaddition/Intramolecular Diels-Alder Reaction Cascade

(2011) Masayuki Kobayashi et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Interaction of niobium and tantalum pentahalides with O-donors: coordination chemistry and activation reactions

(2011) Fabio Marchetti et al.   CHEMICAL COMMUNICATIONS

Recent advances in [2+2+2] cycloaddition reactions

(2011) Gema Domínguez et al.   CHEMICAL SOCIETY REVIEWS

Synthesis of Tri- or Tetrasubstituted Pyrimidine Derivatives through the [5+1] Annulation of Enamidines with either N,N-Dimethylformamide Dialkyl Acetals or Orthoesters and Their Application in a Ring Transformation of Pyrimidines to Pyrido[2,3-d]pyrimidi

(2011) Toshiaki Sasada et al.   CHEMISTRY-A EUROPEAN JOURNAL

Active Low-Valent Niobium Catalysts from NbCl5and Hydrosilanes for Selective Intermolecular Cycloadditions

(2011) Yasushi Satoh et al.   JOURNAL OF ORGANIC CHEMISTRY

Z-Selective, Catalytic Internal Alkyne Semihydrogenation under H2/CO Mixtures by a Niobium(III) Imido Complex

(2011) Thomas L. Gianetti et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Carbon Radical Generation by d0Tantalum Complexes with α-Diimine Ligands through Ligand-Centered Redox Processes

(2011) Hayato Tsurugi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Stepwise Synthesis of Metal–Organic Frameworks: Replacement of Structural Organic Linkers

(2011) Brandon J. Burnett et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

NbCl3-Catalyzed Three-Component [2 + 2 + 2] Cycloaddition Reaction of Terminal Alkynes, Internal Alkynes, and Alkenes to 1,3,4,5-Tetrasubstituted 1,3-Cyclohexadienes

(2011) Yasushi Satoh et al.   ORGANIC LETTERS

Stereoselective transition metal-catalysed higher-order carbocyclisation reactions

(2010) Phillip A. Inglesby et al.   CHEMICAL SOCIETY REVIEWS

Niobium-catalyzed Activation of CF3Group on Alkene: Synthesis of Substituted Indenes

(2010) Kohei Fuchibe et al.   CHEMISTRY LETTERS

NbCl3-Catalyzed Intermolecular [2+2+2] Cycloaddition of Alkynes and α,ω-Dienes: Highly Chemo- and Regioselective Formation of 5-ω-Alkenyl-1,4-substituted-1,3-cyclohexadiene Derivatives

(2010) Yasushi Obora et al.   JOURNAL OF ORGANIC CHEMISTRY

Rhodium-Catalyzed Complete Regioselective Intermolecular Cross-Cyclotrimerization of Aryl Ethynyl Ethers and Nitriles or Isocyanates at Room Temperature

(2010) Yoshiyuki Komine et al.   ORGANIC LETTERS

Enantioselective Pathway for the Synthesis of Laurenditerpenol

(2010) Santanu Mukherjee et al.   ORGANIC LETTERS

Halo, Alkyl, Aryl, and Bis(imido) Complexes of Niobium Supported by the β-Diketiminato Ligand

(2010) Neil C. Tomson et al.   ORGANOMETALLICS

Catalytic asymmetric synthesis of descurainin via 1,3-dipolar cycloaddition of a carbonyl ylide using Rh2(R-TCPTTL)4

(2010) Naoyuki Shimada et al.   TETRAHEDRON LETTERS

Formulation and in vitro assessment of minoxidil niosomes for enhanced skin delivery

(2009) Prabagar Balakrishnan et al.   INTERNATIONAL JOURNAL OF PHARMACEUTICS

Synthesis of Vinylcycloheptadienes by the Nickel-Catalyzed Three-Component [3 + 2 + 2] Cocyclization. Application to the Synthesis of Polycyclic Compounds

(2009) Shinsuke Komagawa et al.   JOURNAL OF ORGANIC CHEMISTRY

New Tantalum Ligand-Free Catalyst System for Highly Selective Trimerization of Ethylene Affording 1-Hexene: New Evidence of a Metallacycle Mechanism

(2009) Rocío Arteaga-Müller et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Lewis acid-promoted electron transfer deoxygenation of epoxides, sulfoxides, and amine N-oxides: the role of low-valent niobium complexes from NbCl5 and Zn

(2009) Kyungsoo Oh et al.   TETRAHEDRON

Solvent-free NbCl5 catalyzed condensation of 1,3-dicarbonyl compounds and aldehydes: a facile synthesis of trisubstituted alkenes

(2009) J.S. Yadav et al.   TETRAHEDRON LETTERS

Versatile Pathways for In Situ Polyolefin Functionalization with Heteroatoms: Catalytic Chain Transfer

(2008) Smruti B. Amin et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

CC Coupling Reactions of Superstrong CF3Groups with C(sp2)-H Bonds: Reactivity and Synthetic Utility of Zero-Valent Niobium Catalyst

(2008) Kohei Fuchibe et al.   Chemistry-An Asian Journal

Cobalt-Catalyzed Intermolecular [2 + 2 + 2] Cycloaddition for the Synthesis of 1,3-Cyclohexadienes

(2008) Gerhard Hilt et al.   JOURNAL OF ORGANIC CHEMISTRY

Olefin Substitution in (silox)3M(olefin) (silox =tBu3SiO; M = Nb, Ta):  The Role of Density of States in Second vs Third Row Transition Metal Reactivity

(2008) Kurt F. Hirsekorn et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Hydroaminoalkylation of Unactivated Olefins with Dialkylamines

(2008) Seth B. Herzon et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

NbCl3-catalyzed [2+2+2] intermolecular cycloaddition of alkynes and alkenes to 1,3-cyclohexadiene derivatives

(2008) Yasushi Obora et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Palladium-Catalyzed Formal Cycloaddition of Silacyclobutanes with Enones: Synthesis of Eight-Membered Cyclic Silyl Enolates

(2008) Koji Hirano et al.   ORGANIC LETTERS

Liquid Enol Ethers and Acetates as Gaseous Alkyne Equivalents in Rh-Catalyzed Chemo- and Regioselective Formal Cross-Alkyne Cyclotrimerization

(2008) Hiromi Hara et al.   ORGANIC LETTERS

Síntese de 1-indanonas através da reação de acilação de Friedel-Crafts intramolecular utilizando NbCl5 como ácido de Lewis

(2008) Ellen Christine Polo et al.   QUIMICA NOVA

Enantioselective synthesis of α,α-disubstituted α-amino acids by Rh-catalyzed [2+2+2] cycloaddition of 1,6-diynes with protected dehydroamino acid

(2008) Ken Tanaka et al.   TETRAHEDRON

Ti-catalyzed reactions of 4,4′-bis(trimethylsilyl)bicyclohexyl-2,2′-diene with various electrophiles

(2008) Chahinez Aouf et al.   TETRAHEDRON LETTERS