Results 1 to 10 of about 1,753 (146)

Synthesis of Symmetrical and Non-symmetrical Diimines from Dimedone [PDF]

open access: yesMolecules, 2009
Symmetrical and non-symmetrical diimines derived from dimedone were synthesized by the reaction of their corresponding enaminothiones with primary amines.
Ibrahim A. Musad, Bahjat A. Saeed
doaj   +3 more sources

Identification of dimedone-trapped sulfenylated proteins in plants under stress

open access: yesBiochemistry and Biophysics Reports, 2017
In stressed plants, the reactive oxygen species (ROS) levels rise. Key to ROS signaling research are detection and identification of the protein cysteine sulfenylation (-SOH), the ROS-mediated oxidative product of a thiol (-SH).
Salma Akter   +3 more
doaj   +4 more sources

Selective construction of dispiro[indoline-3,2'-quinoline-3',3''-indoline] and dispiro[indoline-3,2'-pyrrole-3',3''-indoline] via three-component reaction

open access: yesBeilstein Journal of Organic Chemistry, 2023
A convenient synthetic procedure for the construction of novel dispirooxindole motifs was successfully developed by base-promoted three-component reaction of ammonium acetate, isatins and in situ-generated 3-isatyl-1,4-dicarbonyl compounds.
Ziying Xiao   +3 more
doaj   +1 more source

Triethylammonium 2-(3-Hydroxy-2-oxoindolin-3-yl)-5,5-dimethyl-3-oxocyclohex-1-en-1-olate

open access: yesMolbank, 2023
In recent years, the application of privileged structures has become a powerful approach in the discovery of new biologically active molecules. Ion pairing is a strategy used to enhance the permeation of ionized topical drugs.
Yuliya E. Ryzhkova   +2 more
doaj   +1 more source

Aldehydes participation in oxidative stress in rat thymocytes in vitro [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2014
A variety of lipid radicals are formed under oxidative stress development. The further oxidation of these radicals leads to formation of numerous aldehydes.
K. О. Tokarchuk, О. V. Zaitseva
doaj   +1 more source

Selective Reduction of Dimedone [PDF]

open access: yesSustainability, 2009
The selective hydrogenation of dimedone (1) to the corresponding monoketone 2 over palladium and Amberlyst 15® is reported. The product is a synthetic building block for the fragrance and pharmaceutical industry. Advantages of the new catalytic procedure are the high catalyst activity and selectivity, less by-product formation, avoidance of the ...
Ulla Létinois, Werner Bonrath
openaire   +2 more sources

Ultrasound-Assisted One‐Pot Synthesis of 9-(Substituted heteroaryl) acridinedione Derivatives

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2021
An efficient green approach for the synthesis of 9-heteroaryl-acridine-1,8-dione derivatives (3a-f) was accomplished via reactions of dimedone (1) with various heteroaromatic aldehydes (2a-f) and ammonium acetate through one-pot multicomponent reactions ...
Mehtap Özgür, Duygu Bayramoğlu
doaj   +1 more source

Crystal structure, Hirshfeld surface and frontier molecular orbital analysis of 9-(3-bromo-4-hydroxy-5-methoxyphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
In the fused ring system of the title compound, C24H27BrO5, the mean plane and maximum deviations of the central pyran ring are 0.0384 (2) and 0.0733 (2) Å, respectively.
N. Suresh Babu   +3 more
doaj   +1 more source

One-pot synthesis of 2,2'-Arylmethylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) by electrochemical method [PDF]

open access: yesشیمی کاربردی روز, 2015
2,2'-Arylmethylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives are important biologically active compounds, which can be evaluated as tyrosinase inhibitors.
Reyhaneh Kazemi Rad, Javad Azizian
doaj   +1 more source

Synthesis and characterization of selected fused isoxazole and pyrazole derivatives and their antimicrobial activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
New potent antibacterials, fused isoxazole and pyrazole derivatives, were synthesized using 5,5-dimethylcyclohexane-1,3-dione (1) and 3-[(4-chlorobenzylidene)amino]-2-thioxoimidazolidin-4-one (2) as synthons. Aromatic aldehydes on condensation with 1 and
VIJAY V. DABHOLKAR, FAISAL Y. ANSARI
doaj   +3 more sources

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