Results 81 to 90 of about 5,925,089 (286)

Pyridazine-3,6-dicarboxylic acid monohydrate

Acta Crystallographica Section E Structure Reports Online, 2004
The title compound, C4H4N2O4·H2O, is a triclinic polymorphic form of pyridazine-3,6-di­carboxyl­ic acid monohydrate. The dihedral angles between the planes of the carboxyl­ic acid groups and the planar pyrazine ring are 2.0 (2) and 5.6 (2)°. The acid and water mol­ecules form almost planar sheets connected by hydrogen bonds, with O⋯O distances ranging ...
Wojciech Starosta, Janusz Leciejewicz
openaire   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

Concurrent formation of furan-2,5- and furan-2,4-dicarboxylic acid: unexpected aspects of the Henkel reaction

, 2013
The concurrent formation of furan-2,5- and furan-2,4-dicarboxylic acid under solvent free conditions via a disproportionation reaction is described. By reacting potassium-2-furoate at 260 °C in the presence of 22 mol% of (Lewis acidic) catalysts like ...
S. Thiyagarajan, A. Pukin, J. Haveren, M. Lutz, D. S. Es   +4 more
semanticscholar   +1 more source

Synthesis of Dithienylcycloalkene Molecular Switches Enabled by a Bench‐Stable Ti‐Complex

Chemistry – A European Journal, EarlyView.
Herein we report a set of cycloalkene‐bridged DTEs with ring sizes ranging from 4‐ to 7‐membered rings. The synthesis of these analogs was performed via a key McMurry coupling step, which was enabled by a practical, bench‐stable Ti(IV)‐complex. Remarkably, it is shown that the strained cyclobutene bridge outperforms other rings, even the most commonly ...
Marcell M. Bogner, Márton Hegedűs, Péter P. Kalapos, Attila Kunfi, Gábor London   +4 more
wiley   +1 more source

Transitioning Formamide Solvothermal Syntheses of MOFs to Less Toxic Solvents

Chemistry – A European Journal, EarlyView.
Metal‐organic Frameworks (MOFs) are commonly synthesized in toxic formamide solvents. This study investigates the synthetic factors required for effective removal of formamides across various classes of MOFs, providing a foundation for designing new sustainable MOF syntheses.
Julia C. Donovan, Evelyn C. Peterson, Adam J. Matzger   +2 more
wiley   +1 more source

3-Carbamoyl-2,2-dimethylcyclopentane-1,1-dicarboxylic acid

Acta Crystallographica Section E, 2012
In the title compound, C10H15NO5, the five-membered cyclopentane ring has an envelope conformation, with four atoms lying in a plane (mean deviation = 0.0213 Å), while the fifth atom deviates from this plane by 0.626 (2)&#
Zoya Voitenko, Volodymyr Knizhnikov, Marian Gorichko   +2 more
doaj   +1 more source

Recent Advances in Chemical Probing Strategies for RNA Structure Determination in Vivo

Chemistry – A European Journal, EarlyView.
This Review illustrates how structural probes combined with advanced sequencing technologies are revolutionizing our ability to map RNA structures and interactions within living cells. It highlights the development of innovative strategies tailored to probe RNA structures in particular biological contexts.
Maryana Yarshova, Jieyu Zhao, Chun Kit Kwok   +2 more
wiley   +1 more source

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova, Cicely M. Warne, Hugo Pétremand, Laura König‐Mattern, Johannes Stöckelmaier, Chris Oostenbrink, Georg M. Guebitz, Jeremy Luterbacher, Alessandro Pellis   +8 more
wiley   +1 more source

Diazoketones from Acid Chlorides of Dicarboxylic Acids

, 1966
The diazoketons, prepared from acid chlorides or dicarboxylic acids, have been charecterised and the action of various reagents on them has been studied.
Kumar, Satish, S.M. Gupta
openaire   +1 more source

Engineered Metal–Organic Frameworks‐Based Materials for Environmental Detection

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Engineered metal–organic frameworks (MOFs) regulated by various material modification strategies are discussed for environmental contaminant detection under different sensing mechanisms, providing future improvements of MOFs in environmental detection. Sensitive and selective detection of contaminants is crucial for environmental protection.
Pan Gao, Song Wang, Yuechao Yao, Yibo Dou   +3 more
wiley   +1 more source