Results 31 to 40 of about 1,824 (162)

Phosphosulfonic acid, an efficient solid acid catalyst for the one-pot preparation of 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes under solvent-free conditions [PDF]

Journal of the Serbian Chemical Society, 2013
An expeditious procedure for the synthesis of 14- aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes through one-pot pseudo three component condensation of β-naphthol or dimedone with various aryl aldehydes is described.
Kiasat Reza Ali, Mouradzadegun Arash, Saghanezhad Jafar Seyyed   +2 more
doaj   +1 more source

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

Proteomic analysis of peptides tagged with dimedone and related probes [PDF]

Journal of Mass Spectrometry, 2014
Owing to its labile nature, a new role for cysteine sulfenic acid (–SOH) modification has emerged. This oxidative modification modulates protein function by acting as a redox switch during cellular signaling. The identification of proteins that undergo this modification represents a methodological challenge, and its resolution remains a matter of ...
Pablo, Martínez-Acedo, Vinayak, Gupta, Kate S, Carroll   +2 more
openaire   +2 more sources

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

A Simple, Proficient and Green Approach for the Synthesis of 1,8-Dioxo-octahydroxanthenes Catalyzed by Cerium(IV) Ammonium Nitrate in Aqueous Media

Orbital: The Electronic Journal of Chemistry, 2014
Various biologically important 1,8-dioxo-“octahydroxanthene derivatives” have been efficiently synthesized in excellent yields using catalytic amounts of cerium(IV) ammonium nitrate (CAN) in water.
Shitole Nana Vikram, Nana V. Shitole, Gopal K. Kakde   +2 more
doaj   +1 more source