Results 61 to 70 of about 524 (174)

Oxidative Rearrangement of Imidazoles with Dimethyldioxirane

, 2016
Tetrahydrobenzimidazoles, on treatment with dimethyldioxirane, rearrange to provide 5-imidazolones exclusively.
Carl J. Lovely (1312251), H. V. Rasika Dias (840254), Yong He (115255), Hongwang Du (2492686)   +3 more
core   +3 more sources

Orthopalladation of GFP-Like Fluorophores Through C-H Bond Activation: Scope and Photophysical Properties [PDF]

, 2018
International audienceThe orthopalladation of 4‐aryliden‐5(4H)‐oxazolones and ‐imidazolones through C–H bond activation is regioselective and gives dimers where only the ortho position of the 4‐arylidene ring is activated.
Bischoff, Laurent, Cativiela, Carlos, Jiménez, Ana Isabel, Baudequin, C., Bischoff, L., Baudequin, Christine, Collado, S., Urriolabeitia, Esteban P., Jimenez, A.I., Jiménez, Ana I., Pueyo, Alejandro, Urriolabeitia, E.P., Hoarau, Christophe, Pueyo, A., Collado Ruiz, Sandra, Collado, Sandra, Hoarau, C., Cativiela, C.   +17 more
core   +1 more source

AM1, PM3 and MNDO study of the tautomerism of 2-, 4- or 5-imidazolones and their thio- and azo-analogs

, 1996
The geometries, relative stabilities, ionization potentials and dipole moments for the different tautomers of 2-, 4- and 5-imidazolones and for their thio- or ate-analogs along with their 1-methyl derivatives were calculated with fully geometry ...
Ogretir, C, Yarligan, S
core   +1 more source

syn-1,2-Diaminobenzocyclobutenes from [2+2] cycloaddition of 2-imidazolones with arynes.

Formal [2+2] cycloaddition of arynes with 2-imidazolones affords syn-1,2-diaminobenzocyclobutenes. The transformation can also be conducted as a one-pot, three-stage process direct from simple propargyl amines and isocyanates to afford the new ...
Jones, CR, Ur Rehman Shah, H, Li, Q
core   +1 more source

Pd(0)-Catalyzed Direct C-H Functionalization of 2-H-4-Benzylidene Imidazolones: Friendly and Large-Scale Access to GFP and Kaede Protein Fluorophores

, 2016
LDM TEPInternational audienceThe first one‐pot synthesis of N‐substituted 2‐H‐4‐benzylidene imidazolones and their subsequent palladium‐catalyzed and copper‐assisted direct C2−H arylation and alkenylation with aryl‐ and alkenylhalides are described. This
Bischoff, Laurent, Laurent Bischoff, Perrio, Cécile, Cécile Perrio, Mickaël Muselli, Muselli, Mickaël, Hoarau, Christophe, Christine Baudequin, Baudequin, Christine, Christophe Hoarau   +9 more
core   +1 more source

Synthesis, Pharmacology, and Structure−Activity Relationships of Novel Imidazolones and Pyrrolones as Modulators of GABA_A Receptors

, 2016
New series of imidazolones and pyrrolones were synthesized. The compounds were tested regarding their anxiolytic properties due to modulation of the GABAA receptor response.
Ute Egerland (1684045), Hans-Joachim Lankau (2148271), Norbert Höfgen (2646406), Thomas Arnold (325197), Christian Grunwald (1684042), Rita Dost (2646403), Klaus Unverferth (2378437), Chris Rundfeldt (2646400), Hans-Jörg Hofmann (2485588)   +8 more
core   +1 more source

Simple and Efficient Copper-Catalyzed Approach to 2,4-Disubstituted Imidazolones

, 2010
Some imidazolone derivatives are biological and pharmaceutical active molecules and the chromophores of the fluorescent proteins. In this communication, a simple and efficient approach to 4-arylidene-2-alkyl-4,5-dihydro-1H-imidazol-5-ones (2,4 ...
Fu, H., Liu, H. X., Jiang, Y. Y., Zhao, Y. F., Yang, H. J., 赵玉芬, Gong, X. Y.   +6 more
core  

Silver Nitrate-Catalyzed Isocyanide Insertion/Lactamization Sequence to Imidazolones and Quinazolin-4-ones: Development and Application in Natural Product Synthesis

Silver nitrate-catalyzed reaction of methyl α,α-disubstituted α-isocyanoacetates with primary amines afforded 3,5,5-trisubstituted imidazolones in good to excellent yields.
Clemenceau, Antonin, Wang, Qian, Zhu, Jieping   +2 more
core   +1 more source

Meta-CF₃-Substituted Analogues of the GFP Chromophore with Remarkable Solvatochromism. [PDF]

Int J Mol Sci, 2023
Perfilov MM, Zaitseva ER, Baleeva NS, Kublitski VS, Smirnov AY, Smirnov AY, Bogdanova YA, Krasnova SA, Myasnyanko IN, Mishin AS, Baranov MS.   +10 more
europepmc   +1 more source

[4+2]-Cycloaddition to 5-Methylidene-Hydantoins and 5-Methylidene-2-Thiohydantoins in the Synthesis of Spiro-2-Chalcogenimidazolones. [PDF]

Int J Mol Sci, 2023
Shybanov DE, Kukushkin ME, Hrytseniuk YS, Grishin YK, Roznyatovsky VA, Tafeenko VA, Skvortsov DA, Zyk NV, Beloglazkina EK.   +8 more
europepmc   +1 more source