Results 71 to 80 of about 19,339 (247)

Hybrid Macrocyclic Peptides — Synthetic Strategies to Diversify and Cyclize Peptide Libraries in Phage Display Selections

Chemistry – A European Journal, EarlyView.
Hybrid macrocyclic peptides unite genetically encoded peptide libraries with the structural complexity of synthetic small molecules. This Review critically analyzes phage‐compatible cyclization and diversification chemistries, highlights emerging opportunities beyond traditional cysteine‐based approaches, and outlines how future advances may enable the
Titia Rixt Oppewal, Clemens Mayer
wiley   +1 more source

Synthesis, Crystal Structure, and Supramolecular Understanding of 1,3,5-Tris(1-phenyl-1H-pyrazol-5-yl)benzenes

Molecules, 2017
Understanding the supramolecular environment of crystal structures is necessary to facilitate designing molecules with desirable properties. A series of 12 novel 1,3,5-tris(1-phenyl-1H-pyrazol-5-yl)benzenes was used to assess the existence of planar ...
Marcos A. P. Martins, Alexandre R. Meyer, Paulo R. S. Salbego, Daniel M. dos Santos, Guilherme A. de Moraes, Helio G. Bonacorso, Nilo Zanatta, Clarissa P. Frizzo, Manfredo Hörner   +8 more
doaj   +1 more source

Rh(III) catalyzed oxidative synthesis of pyrazoles from azomethines and acrylamides

, 2013
Rh(III) catalyzed oxidative synthesis of pyrazoles from azomethines and ...
李兴伟, 甄文翠, 杜正银
core  

Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis

Chemistry – A European Journal, EarlyView.
The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller, Nemrud Demirel, Thomas Krüger, Linus Plohnke, Jennifer Schröder, Sergei I. Ivlev, Eric Meggers   +6 more
wiley   +1 more source

Ultrasound-promoted iodination of pyrazoles in aqueous medium

Orbital: The Electronic Journal of Chemistry, 2012
Several pharmacological activities have been devoted to pyrazole containing molecules. In particular, 4-iodopyrazoles have been employed as key starting materials in cross-coupling chemistry and metal-iodine exchange reactions that focus on the synthesis
Jéssica Kunsminskas, Lucas Pizutti, Cristiano Raminelli   +2 more
doaj   +1 more source

Synthesis of ferrocenyl substituted pyrazoles

, 2005
Pyrazoles have been studied for over a century as an important class of heterocyclic compounds and continue to attract considerable interest due to the broad range of biological activities they possess.
MERAL GÖRMEN
core  

Catalyst-Free One-Pot Access to Pyrazoles and Disulfide-Tethered Pyrazoles via Deamidative Heteroannulation of beta-Ketodithioesters with Semicarbazide Hydrochloride in Water

, 2018
An operationally simple, mild, and catalyst-free one-pot protocol to access privileged pyrazoles and disulfide-tethered pyrazoles has been devised by 3+2] heteroannulation of beta-ketodithioesters with semicarbazide hydrochloride in water under open air.
Koley, Suvajit, Soni, Sonam, Panja, Sumit Kumar, Singh, Maya Shankar   +3 more
core   +1 more source

Multistep Changes in Spin‐Crossover Temperature Induced by Stepwise Desolvations

Chemistry – A European Journal, EarlyView.
A novel Fe(II) complex (1·3VN) exhibits SCO behavior in which the spin transition temperature sequentially increases and then decreases by stepwise removal of valeronitrile (VN) molecules. These non‐monotonic changes in the transition temperature are explained by the changes in intermolecular interactions among the Fe complex and each valeronitrile ...
Taisei Suzuki, Takuya Shiga, Natsumi Okawa, Nozomi Mihara, Daisuke Okuyama, Reiji Kumai, Hajime Sagayama, Maximilian Seydi Kilic, Kevin Tran, Franz Renz, Masayuki Nihei   +10 more
wiley   +1 more source

Synthesis and Reactivity of 3-Aminosydnones in Cycloaddition Reactions With Alkynes. [PDF]

Chemistry
The synthesis, functionalization, and reactivity as dipoles of 3‐aminosydnones have been investigated. These neglected compounds undergo smooth cycloaddition reactions with strained alkynes, leading to 1‐aminopyrazoles. ABSTRACT We present in this article the synthesis, functionalization, and properties of 3‐aminosydnones, a forgotten class of ...
Dominic A, D'anfray T, Force G, Buisson DA, Tricoire M, Leblais A, Audisio D, Taran F.   +7 more
europepmc   +2 more sources

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source