Results 31 to 40 of about 5,076 (258)

Synthesis of acetamides bearing 3-aryl-3,4-dihydroquinazolin-4-one and 2-thioxothiazolidin-4-one moieties as novel derivatives

Vietnam Journal of Science, Technology and Engineering, 2022
Five new derivatives of N-(4-oxo-2-thioxothiazolidin-3-yl)-2-((3-aryl-4-oxo-3,4-dihydroquinazolin-2-yl)thio) acetamides have been synthesized successfully through a four-step process from anthranilic acid and aryl isothiocyanates as starting materials ...
Tien Cong Nguyen, Duc Dung Pham, Thi Minh Dinh Tran, Thi Thuy Linh Bui   +3 more
doaj   +1 more source

Toxicidade do herbicida S-metolachlor em plantas de milho provenientes de sementes com diferentes formatos e dimensões S-metholachlor toxicity in maize plants originated from seeds with different sizes and shapes

Planta Daninha, 2006
Este trabalho teve como objetivo avaliar a toxicidade do herbicida S-metolachlor em plantas de milho oriundas de sementes com diferentes características morfológicas.
M.D.A. Rosenthal, S.O. Procópio, J.J.O. Pinto, E.A. Jacob Júnior, W.B. Peres, R. Manica, J.F. Zanatta, A. Cargnelutti Filho, D.C. Sganzerla, J.C. Carneiro, L.G. Canabarro, W. Franzini   +11 more
doaj   +1 more source

Determination of protonation constants and structural correlations for some tertiary formamides and acetamides in sulfuric acid with UV spectroscopy

Macedonian Journal of Chemistry and Chemical Engineering, 2015
The protonation of ten aliphatic amides in sulfuric acid media was studied by UV spectroscopy. The pKBH+ values and solvation parameters were calculated using Yates and McClelland Method, Excess Acidity Method and Bunnett and Olsen Method.
Goran Stojković, Elizabeta Dimitrieska-Stojković, Emil Popovski   +2 more
doaj   +1 more source

The synthesis and biological assessment of [[1,2,4]triazolo[4,3-a]pyridine-3-yl]acetamides with an 1,2,4-oxadiazol cycle in positions 6, 7 and 8

Журнал органічної та фармацевтичної хімії, 2019
Fused heterocyclic 1,2,4-triazoles have provided much attention due to variety of their interesting biological properties. Aim. To develop the method for the synthesis of novel 2-[(1,2,4-oxadiazol-5-yl)-[1,2,4]triazolo[4,3-a]pyridine-3-yl]acetamides and
V. R. Karpina, S. S. Kovalenko, S. M. Kovalenko, O. V. Zaremba, O. V. Silin, T. Langer   +5 more
doaj   +1 more source

Palladium-Catalyzed C–H Functionalization of Aryl Acetamides and Benzoquinones: Synthesis of Substituted Aryl Quinones

, 2022
An efficient synthesis of aryl-substituted quinones via Pd(II)-catalyzed C–H functionalization of less expensive and abundant benzoquinones with aryl acetamides is demonstrated.
Ananya Dutta (5705525), Masilamani Jeganmohan (1446319)   +1 more
core   +1 more source

NBE-Controlled Palladium-Catalyzed Interannular Selective C–H Silylation: Access to Divergent Silicon-Containing 1,1′-Biaryl-2-Acetamides

, 2019
A novel palladium-catalyzed interannular selective C–H silylation of 1,1′-biaryl-2-acetamides is described. The combination of palladium catalyst with copper oxidant enables meta- or ortho-selective C–H silylation by employing hexamethyldisilane as a ...
Bang Zhou, Yuan Yang, Yun Liang (383275), Wenguang Li (6528113), Wenqi Chen, Bang Zhou (5674055), Yankun Xu (5179787), Yun Liang, Yuan Yang (151457), Wenqi Chen (790608), Guobo Deng (5179793), Guobo Deng, Yankun Xu, Wenguang Li   +13 more
core   +1 more source

Catalytic Enantioselective Multicomponent Reactions of Sulfoxonium Ylides Enabled by a Formal Rearrangement—A Versatile Entry to Enantioenriched α‐Sulfanyl Carbonyl Compounds

Angewandte Chemie, EarlyView.
A catalytic network embedding a formal rearrangement enables the first catalytic enantioselective multicomponent reaction (MCR) of sulfur ylides. In the presence of a bulky chiral phosphoric acid, the reaction combines sulfoxonium ylides, aldehydes and thiols, and affords synthetically versatile β‐hydroxy‐α‐sulfanyl carbonyl compounds in ...
Nicolò Santarelli, Pietro Pecchini, Nunzio Matera, Andrea Pellegrini, Riccardo Fabbri, Irati Celada Cubero, Leire Navarro Rubio, Cristina Di Pietro, Andrea Mazzanti, Mariafrancesca Fochi, Luca Bernardi   +10 more
wiley   +2 more sources

Exploring Scaffold Hopping for Novel 2-(Quinolin-4-yloxy)acetamides with Enhanced Antimycobacterial Activity. [PDF]

ACS Med Chem Lett
Utilizing a scaffold-hopping strategy from the drug candidate telacebec, a novel series of 2-(quinolin-4-yloxy)­acetamides was synthesized and evaluated as inhibitors of Mycobacterium tuberculosis (Mtb) growth.
Borsoi AF, Silva Ramos A, Sperotto N, Abbadi BL, Souza Macchi Hopf F, da Silva Dadda A, Scheibler Rambo R, Neves Muniz M, Delgado Paz J, Silveira Grams E, Fries da Silva F, Pissinate K, Galina L, Calle González L, Silva Duarte L, Alberton Perelló M, de Matos Czeczot A, Bizarro CV, Basso LA, Machado P.   +19 more
europepmc   +2 more sources

Synthetic approaches to multifunctional indenes

Beilstein Journal of Organic Chemistry, 2011
The synthesis of multifunctional indenes with at least two different functional groups has not yet been extensively explored. Among the plausible synthetic routes to 3,5-disubstituted indenes bearing two different functional groups, such as the [3 ...
Neus Mesquida, Sara López-Pérez, Immaculada Dinarès, Ermitas Alcalde   +3 more
doaj   +1 more source

An Enantioselective Alkene Aminoarylation to Form Chiral Indolines via Electrostatically‐Directed Palladium Catalysis

Angewandte Chemie, EarlyView.
Enantioselective aminoarylation of ortho‐allyl anilines is achieved under mild conditions. Key to success is the electrostatically‐directed nature of the key aminopalladation step, achieved by using the sulfonated chiral ligand sSPhos on palladium. A detailed study of electronic trends allows tuning of the sulfonamide protecting group to enable good ...
Max Kadarauch, Paul T. Jirsch, H. Erik Diepers, Hamzah Sharif, Robert J. Phipps   +4 more
wiley   +2 more sources