Results 21 to 30 of about 32,736 (165)

New derivatives of 2-R1-N-(5-R)-1,3,4-thiadiazol-2-yl-benzolsulfonamides: synthesis, physicochemical properties and biological activity prediction

Annals of Mechnikov's Institute, 2020
Introduction: The analysis of modern literature, including overseas one, showed that a lot of the scientific researches is devoted to finding and creating biologically active compounds on base 1,3,4-thiadiazole.
I Sych, L Perekhoda, Z Іеremina
doaj  

Reductions of aldehydes and ketones with a readily available N-heterocyclic carbene borane and acetic acid [PDF]

, 2013
Acetic acid promotes the reduction of aldehydes and ketones by the readily available N-heterocyclic carbene borane, 1,3-dimethylimidazol-2-ylidene borane.
Curran, DP, Lamm, V, Pan, X, Taniguchi, T   +3 more
core   +6 more sources

Evaluating polymer-supported isothiourea catalysis in industrially-preferable solvents for the acylative kinetic resolution of secondary and tertiary heterocyclic alcohols in batch and flow [PDF]

Green Chemistry, 2018
Highly recyclable isothiourea catalysts on various polymer supports are reported for the kinetic resolution of alcohols.
Nitul Ranjan Guha, Rifahath M. Neyyappadath, Mark D. Greenhalgh, Ross Chisholm, Samuel M. Smith, Megan L. McEvoy, Claire M. Young, Carles Rodríguez-Escrich, Miquel A. Pericàs, Georg Hähner, Andrew D. Smith   +10 more
openaire   +4 more sources

Types and properties of metal-free catalysts for living polymerizations of biomaterials [PDF]

, 2008
Syntéza biokompatibilních a biodegradabilních polyesterů, použitelných převážně v medicíně, využívá pro polymeraci za otevření kruhu katalyzátory na bázi kovu (např. Sn, Al atd.), které se mohou po implantaci deponovat v těle.
Repka, Martin
core  

Oxidation and β-alkylation of alcohols catalysed by Iridium(I) complexes with functionalised N-heterocyclic Carbene ligands [PDF]

, 2015
The borrowing hydrogen methodology allows for the use of alcohols as alkylating agents for C-C bond forming processes offering significant environmental benefits over traditional approaches.
Fernández-Tornos, Javier, Jiménez, M. Victoria, Modrego, Francisco J., Oro, Luis A., Pérez-Torrente, Jesús J.   +4 more
core   +1 more source

Some transformations in a series of 4-amino-1,2,4-triazole-3-thion derivatives

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki
The continuous improvement of synthesis methods enables the optimization of the process for developing and obtaining target products of chemical transformation. Derivatives of 1,2,4-triazole-3-thiol present a convenient object for chemical transformation,
O. A. Bihdan, V. V. Parchenko, B. V. Gutyj   +2 more
doaj   +1 more source

Screening and characterization of bioactive compounds from two epiphytic microlichen and evaluation of their in vitro antioxidant activity

Future Journal of Pharmaceutical Sciences
Background Lichens in symbiosis produce a wide range of primary and secondary fine compounds in extreme environmental conditions that have a broad range of biological properties as well as antioxidant potential and can be used in future pharmaceuticals ...
Shubham Pradhan, Satyabrata Dash, Bijayananda Sahoo, Sabyasachy Parida, Biswajit Rath   +4 more
doaj   +1 more source

Ti–Pd Alloys as Heterogeneous Catalysts for Hydrogen Autotransfer Reaction and Catalytic Improvement by Hydrogenation Effects [PDF]

, 2019
Ti−Pd alloys were investigated as heterogeneous catalysts for hydrogen autotransfer reactions. This is the first reported study of alloys as catalysts for hydrogen‐borrowing reactions using alcohols.
Kondo Ryota, Obora Yasushi, Suzuki Takeyuki, Takahashi Yuya, Takeshita Hiroyuki T, Utsunomiya Masayoshi, 大洞 康嗣, 竹下 博之, 近藤 亮太   +8 more
core   +1 more source

Influence of Phosphoramidites in Copper-Catalyzed Conjugate Borylation Reaction [PDF]

, 2012
Copper(I) has become the preferred metal to catalyze the β-boration of α,β-unsaturated carbonyl compounds, and now we demonstrate that easily accessible monodentate chiral ligands, such as phosphoramidites and phosphites, can be convenient alternative ...
Bonet, Amadeu,, Fernández, Elena,, Gulyás, Henrik,, Lefort, Laurent,, Sole, Cristina,, Vries, André H.M. de,, Vries, Johannes G. de,   +6 more
core   +4 more sources

Ruthenium-Based Heterocyclic Carbene-Coordinated Olefin Metathesis Catalysts [PDF]

, 2010
The fascinating story of olefin (or alkene) metathesis (eq 1) began almost five decades ago, when Anderson and Merckling reported the first carbon-carbon double-bond rearrangement reaction in the titanium-catalyzed polymerization of norbornene.
Grubbs, Robert H., Vougioukalakis, Georgios C.   +1 more
core   +1 more source