Results 21 to 30 of about 11,527 (248)

Isocyanide Reactions Toward the Synthesis of 3-(Oxazol-5-yl)Quinoline-2-Carboxamides and 5-(2-Tosylquinolin-3-yl)Oxazole

open access: yesFrontiers 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   +4 more
doaj   +1 more source

Alkoxyallene‐Based LANCA Three‐Component Synthesis of 1,2‐Diketones, Quinoxalines, and Unique Isoindenone Dimers and a Computational Study of the Isoindenone Dimerization [PDF]

open access: yes, 2020
A series of β‐alkoxy‐β‐ketoenamides was prepared by the well‐established LANCA three‐component reaction of lithiated 1‐(2‐trimethylsilylethoxy)‐substituted allenes, nitriles, and α,β‐unsaturated carboxylic acids.
Bera M. K.   +6 more
core   +1 more source

Enantiomeric Separation of New Chiral Azole Compounds

open access: yesMolecules, 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   +9 more
doaj   +1 more source

Thieno-Thiazolostilbenes, Thienobenzo-Thiazoles, and Naphtho-Oxazoles: Computational Study and Cholinesterase Inhibitory Activity

open access: yesMolecules, 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   +9 more
doaj   +1 more source

Transition metal-mediated synthesis of oxazoles [PDF]

open access: yes, 2014
Among the synthetic methods for the formation of the oxazole ring, transition metal-mediated protocols are the most attractive in terms of selectivity, efficiency and mildness of reaction conditions.
Bresciani, Stefano   +1 more
core   +1 more source

Highly selective electrochemical hydrogenation of alkynes: Rapid construction of mechanochromic materials [PDF]

open access: yes, 2019
Electrochemical hydrogenation has emerged as an environmentally benign and operationally simple alternative to traditional catalytic reduction of organic compounds.
Ge, Haibo, Li, Bijin
core   +1 more source

Regioselective Formation of 2,5-Disubstituted Oxazoles Via Copper(I)-Catalyzed Cycloaddition of Acyl Azides and 1-Alkynes [PDF]

open access: yes, 2011
The reaction of 1-alkynes with acylazides in the presence of [Tpm*,BrCu(NCMe)]BF4 (Tpm*,Br = tris(3,5-dimethyl-4-bromopyrazolyl)methane) as the catalyst provides 2,5-oxazoles in moderate to high yields.
Cano Rico, Israel   +3 more
core   +1 more source

Development of a method for the synthesis of 2,4,5-trisubstituted oxazoles composed of carboxylic acid, amino acid, and boronic acid

open access: yesBeilstein 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   +2 more
doaj   +1 more source

Sir John Cornforth AC CBE FRS: his synthetic work [PDF]

open access: yes, 2015
Sir John Cornforth’s work on the synthesis of cholesterol and penicillamine, on the chemistry of oxazoles, the stereochemistry of the synthesis of alkenes, the synthesis of abscisic acid and of dibenzophospholes as mimics of enzyme action, is ...
Abraham E.P.   +15 more
core   +1 more source

Synthesis of 1,3-Oxazoles via Van Leusen Reaction in a Pressure Reactor and Preliminary Studies of Cations Recognition

open access: yesProceedings, 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   +4 more
doaj   +1 more source

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