Results 81 to 90 of about 8,043 (225)

Ruthenium-catalyzed azide alkyne cycloaddition reaction: scope, mechanism and applications [PDF]

, 2016
The ruthenium-catalyzed azide alkyne cycloaddition (RuAAC) affords 1,5-disubstituted 1,2,3-triazoles in one step and complements the more established copper-catalyzed reaction providing the 1,4-isomer.
Akimova G., Akimova G., Akimova G., Anna Said Stålsmeden, Bader R. F. W., Chandrasekaran S., Das R., Fan W.-Q., Fokin V. V., Gruchlik A., Huisgen R., Johan R. Johansson, Keicher T., Levin J. I., Murahashi S.-I., Neumajer G., Nina Kann, Palaniraja J., Parsons J. G., Schilling C., Tamás Beke-Somfai, Trabocchi A., Yubo J., Zhou Y. B.   +23 more
core   +2 more sources

The Relationship Between Catalyst and Solvent in Hydrogenation via Condensed Phase Heterogeneous Catalysis

ChemSusChem, Volume 19, Issue 8, 28 April 2026.
Heterogeneous catalysis has historically been developed in the gas phase, however, we have found it pertinent to highlight solvent effects that must be accounted for in liquid environments. Condensed phase catalysis, like that in biomass, petroleum and the conversion of CO2, stands to benefit from the typically overlooked discussion regarding the ...
Jim B. Floyd, Robert A. Dagle, Jotheeswari Kothandaraman, David J. Heldebrant   +3 more
wiley   +1 more source

The Fragmentation of 2,3-Dihydroisothiazol-3-one 1,1-Dioxide Derivatives: A Novel Cheletropic Process

CHIMIA, 1992
Adducts obtained by 1,3-dipolar cycloadditions to 2,3-dihydroisothiazol-3-one 1,1-dioxides are inclined to undergo a cheletropic process, by which the newly formed heterocyclic part undergoes aromatization, while SO2 is extruded and an ...
Kaspar F. Burri
doaj   +2 more sources

Metal Acetylides in Cycloaddition Reactions [PDF]

, 2017
This review highlights recent advances in the synthesis of (hetero)aromatic systems via cycloaddition reactions of alkynylmetals with dienes and dipoles.
Comas-Barceló, J., Harrity, J.P.A.
core   +1 more source

Reactions of 1,2,4‐Oxadiazole[4,5‐a]piridinium Salts with Alcohols: the Synthesis of Alkoxybutadienyl 1,2,4‐Oxadiazoles

ChemistryOpen, 2020
1,2,4‐Oxadiazole[4,5‐a]piridinium salts add alcohols and alkoxides to undergo electrocyclic ring opening affording alkoxybutadienyl 1,2,4‐oxadiazole derivatives.
Dr. Mattia Moiola, Dr. Marco Leusciatti, Prof. Dr. Paolo Quadrelli   +2 more
doaj   +1 more source

5-Formyltriazoles as Valuable Starting Materials for Unsymmetrically Substituted Bi-1,2,3-Triazoles

Frontiers in Chemistry, 2020
Herein, we present the first synthetic methodologies toward non-symmetrical 5,5′-C, C-linked bi-1,2,3-triazoles starting from 5-formyl-1,2,3-triazole via two related pathways.
Robby Vroemans, Tomas Horsten, Maarten Van Espen, Wim Dehaen   +3 more
doaj   +1 more source

Synthesis of an Enzyme‐Triggered Chitosan‐Based Drug Delivery System for Peri‐Implantitis Prevention

Chemistry – A European Journal, Volume 32, Issue 16, 25 April 2026.
ABSTRACT Dental implants have become a leading solution for tooth loss, yet bacterial infections remain a major complication. Antibacterial implant coatings are an important approach to reduce or prevent bacterial infections at the implant. Given the oral cavity's complex microbiome and the importance of some commensal bacteria, it is crucial to ...
Nelly Senze Nnane, Amit Gaikwad, Muhammad Imran Rahim, Andreas Winkel, Oliver Hergert, Till Beuerle, Meike Stiesch, Henning Menzel   +7 more
wiley   +1 more source

A novel application of 2-silylated 1,3-dithiolanes for the synthesis of aryl/hetaryl-substituted ethenes and dibenzofulvenes

Beilstein Journal of Organic Chemistry, 2017
Trimethylsilyldiazomethane (TMS-CHN2) reacts readily with hetaryl thioketones to give sterically crowded 2-trimethylsilyl-4,4,5,5-tetrahetaryl-1,3-dithiolanes with complete regioselectivity at −75 °C as well as at rt.
Grzegorz Mlostoń, Paulina Pipiak, Róża Hamera-Fałdyga, Heinz Heimgartner   +3 more
doaj   +1 more source

Synthesis, Conformation and Antiproliferative Activity of Isothiazoloisoxazole 1,1-dioxides [PDF]

, 2016
Sixteen new isothiazoloisoxazole 1,1-dioxides, one new isothiazolotriazole and one new isothiazolopyrazole have been synthesised by using 1,3-dipolar cycloadditions to isothiazole 1,1-dioxides.
A. Pitard, Baggi, Barwick, Beccalli, Beccalli, C. R. Rice, Carugo, Chen, Clerici, Clerici, Clerici, Clerici, Clerici, Clerici, Clerici, Clerici, Clerici, Ducray, F. A. Javid, Ferri, G. Molyneux, Gersch, Hemming, Hemming, Hemming, Hemming, Iwama, J. Blackburn, Jamshaid, Jian, K. Hemming, Kolb, Lima, Llinás, Luo, M. I. Page, MacNevin, P. N. Horton, Page, Pitts, S. Afshinjavid, S. J. Coles, Stefanini, Testero, Thomas, Tsang, Tsang, Tsang, Tuba, Uraguchi, Ward, Waters, Williams, Zajac, Zajac, Zarei   +55 more
core   +1 more source

Eugenol‐Derived Sustainable Cyclic Carbonates and Polythiocarbonates from CO2 and COS as Efficient Hybrid Catalysts for Suzuki–Miyaura Cross‐Coupling Reactions

Advanced Sustainable Systems, Volume 10, Issue 4, April 2026.
A bio‐based palladium‐ligated polymer catalyst was achieved through COS/eugenol‐epoxide copolymerization and post‐polymerization functionalisation using click chemistry. The resulting hybrid catalyst efficiently catalyses Suzuki cross‐coupling reactions at low catalyst loadings with excellent recyclability.
Mohsin Hassan, Gulzar A. Bhat, Donald J. Darensbourg   +2 more
wiley   +1 more source