Results 71 to 80 of about 10,212 (248)

Tailored Watson–Crick Pairing Partners for Xanthosine in RNA

Chemistry – A European Journal, EarlyView.
RNAs with kappa‐xanthosine (K–X) or 2‐iminocytidine‐xanthosine (2imC–X) base pairs form stable double helices that have higher melting temperatures than those of the A–U or G–U references. Access to these novel 2imC‐modified RNAs is possible through the mild, selective chemical conversion of 2‐thiocytidine RNA precursors.
Stefan Mair, Anna Rázková, Karl Brillet, Catherina Gasser, Eric Ennifar, Ronald Micura   +5 more
wiley   +1 more source

Design, Synthesis and Anti-fibrosis Activity Study of N1-Substituted Phenylhydroquinolinone Derivatives

Molecules, 2012
Pirfenidone (5-methyl-1-phenyl-2(1H)-pyridone, PFD) is a small-molecule compound acting on multiple targets involved in pathological fibrogenesis and is effective to increase the survival of patients with fibrosis, such as idiopathic pulmonary fibrosis ...
Jun Chen, Lijian Tao, Qianbin Li, Bin Liu, Ling Wu, Gaoyun Hu   +5 more
doaj   +1 more source

α,β‐Alkylation Reactions Catalyzed by Ruthenium Triphenylphosphine Complexes Bearing Substituted Pyridine–Quinoline Based Ligands

European Journal of Inorganic Chemistry, EarlyView.
A series of new air‐stable ruthenium(II) bis‐triphenylphosphine complexes comprising substituted pyridine–quinoline ligands have been developed via a one‐pot procedure. The new complexes successfully serve as scaffolds to promote catalytic CC bond formation, more precisely the α‐alkylation of ketones with primary alcohols, via the borrowing hydrogen ...
Nikolaos Zacharopoulos, Panagiotis‐Georgios Kanellopoulos, Evangelos Bakeas, Antigoni Cheilari, Gregor Schnakenburg, Athanassios Chrissanthopoulos, Athanassios Philippopoulos   +6 more
wiley   +1 more source

The Preparation of Some 1-(Nitrophenyl)-2-pyridones and -thiopyridones [PDF]

, 1957
In connection with a study of certain reactions of furfural with m- and p-nitroaniline, to be published later, samples of the hitherto undescribed l-(3\u27-nitrophenyl)-2-pyridone (I) and l-(4\u27-nit rophenyl)-2-pyridone (II) were prepared for purposes ...
N. Pravdić-Sladović, V. Hahn
core   +1 more source

Synthesis, Characterization, and Electrochemical Properties of Tri‐ and Tetranuclear CoIII‐Oxo Complexes

European Journal of Inorganic Chemistry, EarlyView.
A series of three tetranuclear and two trinuclear Co(III) carboxylate complexes are synthesized and thoroughly spectroscopically and electrochemically characterized. The relative stability of the tetranuclear versus trinuclear complexes is investigated by density functional theory calculations, and the infrared and ultraviolet/visible spectra are ...
Timo Fockenberg, Niklas Sülzner, Hatem M. A. Amin, Christoph Wölper, Christof Hättig, Stephan Schulz   +5 more
wiley   +1 more source

Perchloratobis[1-(1,10-phenanthrolin-2-yl)-2-pyridone]zinc(II) perchlorate

Acta Crystallographica Section E, 2009
In the title mononuclear complex, [Zn(ClO4)(C17H11N3O)2]ClO4, the ZnII ion is coordinated in a distorted octahedral geometry. The dihedral angles between the pyridine rings and the mean planes of the 1,10-phenanthroline ring system in each of the 1-(1,10-
Qing Ru Zhao, Qi Sheng Liu, Qing Yun Liu
doaj   +1 more source

Catalytic Dehydrogenation of Lauric Acid and a Potential Use in Polyester Synthesis

European Journal of Lipid Science and Technology, EarlyView.
A three‐step reaction sequence was developed to synthesize renewable lauric acid–based dimethyl esters. The sequence consists of a catalytic dehydrogenation of saturated fatty acids with molecular oxygen as oxidant, an esterification with methanol, and a dimerization reaction with dithiols via thia‐Michael addition.
Luis Santos Correa, Emma Stapf, Timo Nonner, Michael A. R. Meier   +3 more
wiley   +1 more source

Reverse Regioselective Dicarbofunctionalization via Anti‐Michael‐Type Addition

Angewandte Chemie, Volume 137, Issue 25, June 17, 2025.
A reverse regioselective dicarbofunctionalization of acrylamides via anti‐Michael‐type addition is reported. Various (hetero)arene nucleophiles and carbon electrophiles were incorporated in a manner opposite to conventional regioselectivity. A key feature of this reaction is the formation of an alkylpalladium intermediate, which enables the achievement
Hirotsugu Suzuki, Ryota Moro, Takanori Matsuda   +2 more
wiley   +2 more sources

One‐Step Aqueous Synthesis of Glycosyl Pyridinium Salts, Electrochemical Study, and Assessment of Utility as Precursors of Glycosyl Radicals Using Photoredox Catalysis

ChemistryOpen, EarlyView.
Unprotected glycosyl pyridinium salts may be accessed in a single step from the corresponding unprotected sugar in aqueous solution. Whilst meta‐ and para‐substitution is well tolerated, ortho substitution of the N‐heterocycle inhibits product formation. Electrochemical studies revealed reduction potentials in the range of −0.9 to −1.4 V.
Daniel Chong, Paula A. Brooksby, Antony J. Fairbanks   +2 more
wiley   +1 more source

Insights into the Role of Transient Chiral Mediators and Pyridone Ligands in Asymmetric Pd-Catalyzed C–H Functionalization [PDF]

, 2020
Mechanistic investigations uncover a novel role for 2-pyridone ligands and interrogate the origin of enantioselectivity in the (+)-norbornene-mediated Pd-catalyzed meta-C(aryl)–H functionalization of diarylmethylamines. Observations from kinetic analysis
Blackmond, Donna G., Hill, David E., Yu, Jin-Quan   +2 more
core   +2 more sources