Results 61 to 70 of about 1,271 (129)

NaHSO4–SiO2 Promoted Solvent-Free Synthesis of Triazolo [1,2-a]indazole-triones [PDF]

International Journal of New Chemistry, 2014
A new one-pot, efficient three-component condensation of dimedone, urazole and aromatic aldehydes in the presence of silica supported sodium hydrogen sulfate as an effective heterogeneous catalyst for the synthesis of novel Triazolo[1,2-a]indazole-1,3,8 ...
Hossein Anaraki-Ardakani
doaj   +1 more source

Streamlined One‐Pot Synthesis of Fused Pyrroles: A Three‐Component Approach

ChemistryOpen, Volume 15, Issue 4, April 2026.
New modified pyrrole derivatives, namely tetrahydroindol‐4‐ones and pyrrolo[2,3‐d]pyrimidines, functionalized at position 3, were synthesized through a one‐pot multicomponent condensation. Stabilized dimedone enaminones derived from α‐amino acids and their esters (or 6‐amino‐1,3‐dimethyluracil), arylglyoxals, and methylene‐active compounds ...
Kateryna I. Marchenko, Vladislava I. Grinko, Roman M. Gutzul, Oleksandr S. Kharchenko, Henning J. Jessen, Nadiia N. Kolos   +5 more
wiley   +1 more source

An efficient synthesis of imidazo[2,1-b][1,3]thiazins via a one-pot, three-component and solvent-free reaction

Green Chemistry Letters and Reviews, 2016
A simple and eco-friendly method for the synthesis of novel imidazo[2,1-b][1,3]thiazin derivatives has been developed via the one-pot, three-component and solvent-free reaction of thiohydantoins, aromatic aldehyde and 5,5-dimethylcyclohexane-1,3-dione in
Mohammad Mehdi Ghanbari
doaj   +1 more source

Peri‐Microvascular Glycogen and Lactate Regulate Capillary Constrictions and Ischemia Outcome in Mice

Journal of Neurochemistry, Volume 170, Issue 4, April 2026.
Disruption of astrocytic glycogen metabolism, induced by glycogen phosphorylase inhibition (DAB) or genetic deficiency of GYS1 (GYS1Nestin‐KO and GYS1Gfap‐KO), reduces lactate availability to pericytes and impairs microvascular function. This metabolic deficit leads to pericyte‐associated capillary constriction, reduced cerebral blood flow, and ...
Gokhan Uruk, Buket Donmez‐Demir, Sinem Yilmaz‐Ozcan, Canan Cakir‐Aktas, Aslihan Taskiran‐Sag, Gokce Gurler, Jordi Duran, Joan J. Guinovart, Otto Baba, Tsuyoshi Morita, Hulya Karatas, Turgay Dalkara, Muge Yemisci   +12 more
wiley   +1 more source

Dimedone (5,5-Dimethylcyclohexane-1,3-dione) as a protecting agent for amino groups in peptide synthesis

, 1964
The reaction of dimedone (5,5-dimethylcyclohexane-1,3-dione) with amino-acid "active" esters leads to optically pure enamine derivatives. The dimedone derivatives of amino acid esters could also be converted by way of their hydrazides to the ...
B Halpern, LB James
core   +1 more source

Chlorosphaeropsidone and Epichlorospaeropsidone, Two New Chlorinated Dimedone Methyl Ethers Isolated from Liquid Cultures of «Sphaeropsis sapinea» f. sp. «cupressi» [PDF]

, 2007
Two new dimedone methyl ethers, named chlorosphaeropsidone and epichlorosphaeropsidone were isolated from the culture filtrates of Sphaeropsis sapinea f. sp. cupressi, the causal agent of a canker of Italian cypress (Cupressus sempervirens L.).
Bruno, Giovanni, Giordano, Federico, Federico Giordano, Motta, Andrea, Evidente, Antonio, Anna Andolfi, Lorenzo Sparapano, Sparapano, Lorenzo, Giovanni Bruno, Andolfi, Anna, Antonio Evidente, Andrea Motta   +11 more
core   +1 more source

Crystal structure, Hirshfeld surface and frontier molecular orbital analysis of 10-benzyl-9-(3-ethoxy-4-hydroxyphenyl)-3,3,6,6-tetramethyl-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione

Acta Crystallographica Section E: Crystallographic Communications, 2020
In the fused ring system of the title compound, C32H37NO4, the central dihydropyridine ring adopts a flattened boat conformation, the mean and maximum deviations of the dihydropyridine ring being 0.1429 (2) and 0.2621 (2) Å, respectively.
N. Suresh Babu, V. Sughanya, A. Dhandapani, R. Kalaivanan   +3 more
doaj   +1 more source

Electro‐Mediated Redox Functionalization of Conjugated 1,3‐Dienes

Advanced Synthesis &Catalysis, Volume 368, Issue 6, 17 March 2026.
This review aims at providing a comprehensive view of the emerging field of electro‐mediated functionalization of conjugated 1,3‐dienes, highlighting key developments, mechanistic insights, and remaining challenges. It highlights the efficient use of electron as the sole reagent to access highly substituted allylic compounds from simple and readily ...
Ophélie Montiège, Jean‐François Brière, Cédric Schneider, Hélène Beucher   +3 more
wiley   +1 more source

The structure and properties of dicoumarol and related compounds [PDF]

Previous analysis of the i.r. and u.v. spectra of dicoumarol (a powerful anticoagulant and uncoupler of oxidative phosphorylation) has failed to establish the detailed structure of the molecule. In this thesis the i.r. and u.v.
Tomlinson, James Allen
core  

The Thermal α-Substitution of Dimedone by Vinyl Ethers

, 1988
Pyrolysis of a mixture of dimedone (1) and 1-methoxycyclohexene (2) led to formation of the enedione (3), which underwent both a Diels-Alder reaction with (2) to form the spiro compound (4), and reaction with oxygen to give the cyclic peroxide (5 ...
PT Xuan, JT Pinhey
core   +1 more source