Results 11 to 20 of about 3,191 (185)

Isomerization of 5-(2H-Azirin-2-yl)oxazoles: An Atom-Economic Approach to 4H-Pyrrolo[2,3-d]oxazoles

Molecules, 2021
An atom economical method for the preparation of variously substituted 4H-pyrrolo[2,3-d]oxazoles was developed on the basis of thermal isomerization of 5-(2H-azirin-2-yl)oxazoles.
Timur O. Zanakhov, Ekaterina E. Galenko, Mariya A. Kryukova, Mikhail S. Novikov, Alexander A. Khlebnikov   +4 more
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Isocyanide Reactions Toward the Synthesis of 3-(Oxazol-5-yl)Quinoline-2-Carboxamides and 5-(2-Tosylquinolin-3-yl)Oxazole

Frontiers in Chemistry, 2019
A palladium-catalyzed three-component reaction between 5-(2-chloroquinolin-3-yl) oxazoles, isocyanides, and water to yield 3-(oxazol-5-yl)quinoline-2-carboxamides is described.
Zahra Yasaei, Zeinab Mohammadpour, Morteza Shiri, Zahra Tanbakouchian, Shima Fazelzadeh   +4 more
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Reasoned opinion on the review of the existing maximum residue levels (MRLs) for isoxaflutole according to Article 12 of Regulation (EC) No 396/2005 [PDF]

EFSA Journal, 2013
According to Article 12 of Regulation (EC) No 396/2005, the European Food Safety Authority (EFSA) has reviewed the Maximum Residue Levels (MRLs) currently established at European level for the pesticide active substance isoxaflutole.
European Food Safety Authority
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Thieno-Thiazolostilbenes, Thienobenzo-Thiazoles, and Naphtho-Oxazoles: Computational Study and Cholinesterase Inhibitory Activity

Molecules, 2023
Naphtho-triazoles and thienobenzo-triazoles have so far proven to be very potent inhibitors of the enzyme butyrylcholinesterase (BChE). Based on these results, in this work, new thienobenzo-thiazoles were designed and synthesized, and their potential ...
Milena Mlakić, Ema Đurčević, Ilijana Odak, Danijela Barić, Ines Juričević, Ivana Šagud, Franko Burčul, Zlata Lasić, Željko Marinić, Irena Škorić   +9 more
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Access to highly substituted oxazoles by the reaction of α-azidochalcone with potassium thiocyanate

Beilstein Journal of Organic Chemistry, 2020
The reactivity of α-azidochalcones has been explored for the preparation of highly substituted oxazoles via a 2H-azirine intermediate. The azidochalcones, when treated with potassium thiocyanate in the presence of potassium persulfate, lead to 2,4,5 ...
Mysore Bhyrappa Harisha, Pandi Dhanalakshmi, Rajendran Suresh, Raju Ranjith Kumar, Shanmugam Muthusubramanian   +4 more
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Enantiomeric Separation of New Chiral Azole Compounds

Molecules, 2021
Twelve new azole compounds were synthesized through an ene reaction involving methylidene heterocycles and phenylmaleimide, producing four oxazoles, five thiazoles, and one pyridine derivative, and ethyl glyoxylate for an oxazole and a thiazole compound.
Marziyeh E. Kenari, Joshua I. Putman, Ravi P. Singh, Brandon B. Fulton, Huy Phan, Reem K. Haimour, Key Tse, Alain Berthod, Carl J. Lovely, Daniel W. Armstrong   +9 more
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Development of a method for the synthesis of 2,4,5-trisubstituted oxazoles composed of carboxylic acid, amino acid, and boronic acid

Beilstein Journal of Organic Chemistry, 2017
A novel method for the synthesis of trisubstituted oxazoles via a one-pot oxazole synthesis/Suzuki–Miyaura coupling sequence has been developed.
Kohei Yamada, Naoto Kamimura, Munetaka Kunishima   +2 more
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Synthesis of 1,3-Oxazoles via Van Leusen Reaction in a Pressure Reactor and Preliminary Studies of Cations Recognition

Proceedings, 2019
Six 1,3-oxazoles were synthetized in moderate to good yields by Van Leusen reaction in a pressure reactor. The methodology allowed to decrease the reaction times reported in the literature from hours to 20 min.
Verónica G. García-Ramírez, Claudia Contreras-Celedón, Gabriela Rodriguez-García, Luis Chacón-García, Carlos J. Cortes-García   +4 more
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Silver mediated one-step synthesis of oxazoles from α-haloketones

Journal of Saudi Chemical Society, 2011
An efficient silver mediated one-step synthesis/construction of oxazoles using α-haloketones and primary amides is herein described. The methodology is efficient and simple to perform, giving the desired oxazoles in good to excellent yields.
Christian Spiteri, Dougal J. Ritson, Amani Awaad, John E. Moses   +3 more
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Continuous multistep synthesis of 2-(azidomethyl)oxazoles

Beilstein Journal of Organic Chemistry, 2018
An efficient three-step protocol was developed to produce 2-(azidomethyl)oxazoles from vinyl azides in a continuous-flow process. The general synthetic strategy involves a thermolysis of vinyl azides to generate azirines, which react with bromoacetyl ...
Thaís A. Rossa, Nícolas S. Suveges, Marcus M. Sá, David Cantillo, C. Oliver Kappe   +4 more
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