Results 21 to 30 of about 1,271 (129)

Crystal structure of 10-benzyl-9-(3,4-dimethoxyphenyl)-3,3,6,6-tetramethyl-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the acridinedione moiety of the title compound, C32H37NO4, the central dihydropyridine ring adopts a flattened-boat conformation, with the N atom and the methine C atom displaced from the mean plane of the other four atoms by 0.0513 (14) and 0.1828 ...
N. Sureshbabu, V. Sughanya
doaj   +1 more source

The use of tristimulus colorimetry for the determination of hydrogen cyanide in air by a modified König method [PDF]

Journal of the Serbian Chemical Society, 2010
A simple visual and tristimulus colorimetric method (three-dimensional system CIE-L*a*b*) for the determination of trace amounts of hydrogen cyanide in air has been developed.
VLADIMÍR PITSCHMANN, IVANA TUŠAROVÁ, EMIL HALÁMEK, ZBYNĚK KOBLIHA   +3 more
doaj  

Synthesis of xanthene derivatives based on α, α′-bis (substituted-benzylidene) cycloalkanones using tangstophosphoric acid under solvent-free conditions [PDF]

شیمی کاربردی روز, 2014
Tangstophosphoric acid (H3PW12O40) as an acidic catalyst has been used for facile synthesis of xanthene derivatives by the reaction of α,α′-bis (substituted-benzylidene) cycloalkanones and dimedone in solvent-free conditions.
الهام تبریزیان, علی عموزاده   +1 more
doaj   +1 more source

Multicomponent synthesis of novel azo-linked 9-Aryl-1H-xanthene-1,8(2H)-diones using ionic liquid [BDBDMIm]HSO4 [PDF]

شیمی کاربردی روز, 2019
The synthesis of ten novel azo dyes derived from 9-Aryl-1H-xanthene-1,8(2H)-dione derivatives from one equivalent of azo-linked salicylaldehydes and two equivalent of dimedone in the presence of 3,3'-(butane-1,4-diyl)bis(1,2-dimethyl-1H-imidazol-3-ium ...
mohammad nikpassand, leila Zare Fekri
doaj   +1 more source

2,2′-[(4-Butoxyphenyl)methylene]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one)

IUCrData
In the title compound, C27H36O5, the dihedral angles between the planes of the benzene ring and the cyclohexenone rings are 60.87 (10) and 65.04 (10)°, while the dihedral angle between the mean planes of the two cyclohexenone rings is 39.33 (10)°.
N. Suresh Babu, S. Anbu Chudar Azhagan, B. Loganathan, V. Sughanya, J. Ayyappan   +4 more
doaj   +1 more source

Microwave-assisted Synthesis of Acridine-1,8(2H,5H)-diones via a One-pot, Three Component Reaction [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
A new and improved protocol for the synthesis, in good to excellent yields, of acridine-1,8(2H,5H)-diones is described, involving a one-pot, three component reaction of dimedone, arylglyoxals, and ammonium acetate in water under microwave irradiation.
Ahmad Poursattar Marjani, Jabbar Khalafy, Mohyeddin Chitan, Sahar Mahmoodi   +3 more
doaj  

Participation of aldehydes in oxidative stress parameters development under rhabdomyolysis and streptozotocin-induced diabetes rat's models

Біологічні студії, 2014
Hyperproduction of aldehydes – carbonyl stress, is resulted from lipid peroxidation and/or glycosylation. We suggest that endogenous aldehydes can affect some oxidative stress parameters development. The aim of this research is to distinguish the role of
K. O. Tokarchuk, I. P. Krysyuk, L. G. Kapustianenko, S. G. Shandrenko   +3 more
doaj   +1 more source

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

The Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá, Patrick C. Nobre, Isabelly O. Ferreira, Juliano B. Azeredo, Vanessa Nascimento   +4 more
wiley   +1 more source

Applications of dimedone in the synthesis of heterocycles: An update

, 2016
Dimedone (5,5-dimethylcyclohexane-1,3-dione) is an alicyclic diketone, occasionally considered as building blocks in design and synthesis of a wide variety of heterocycles.
Zadsirjan, Vahideh, Nazari, Niousha, M.Heravi, Majid, Fattahi, Bahareh   +3 more
core   +1 more source

Sodium Hypochlorite Pentahydrate in Organic Synthesis and Beyond

Chemistry–Methods, Volume 6, Issue 10, October 2026.
Sodium hypochlorite pentahydrate emerges as a versatile, stable, and practical oxidant for organic synthesis. This review highlights its unique reactivity, broad synthetic applications, and growing impact on sustainable oxidation chemistry, providing a comprehensive overview of recent advances and future opportunities. Sodium hypochlorite pentahydrate (
Masayuki Kirihara, Hideyuki Tsutsui, Yoshikazu Kimura   +2 more
wiley   +1 more source