Results 1 to 10 of about 1,527 (50)

Oxa-Michael/Ugi-Smiles cascade reaction with α,β-unsaturated aldehydes

open access: yesResults in Chemistry, 2022
Use of α,β-unsaturated aldehydes as components in Ugi-Smiles couplings of 2-nitrophenol with alkyl isocyanides and primary amines provides ready access to γ-alkoxy substituted amides when performed in the presence of alcoholic solvents. The observed five
Aubrey Thessing   +5 more
doaj   +1 more source

Biochemical Methanol Gas Sensor (MeOH Bio-Sniffer) for Non-Invasive Assessment of Intestinal Flora from Breath Methanol

open access: yesSensors, 2021
Methanol (MeOH) in exhaled breath has potential for non-invasive assessment of intestinal flora. In this study, we have developed a biochemical gas sensor (bio-sniffer) for MeOH in the gas phase using fluorometry and a cascade reaction with two enzymes ...
Koji Toma   +6 more
doaj   +1 more source

Theoretical investigation of Banert cascade reaction [PDF]

open access: yesRoyal Society Open Science, 2018
Computational inside of Banert cascade reaction for triazole formation is studied with B3LYP/6-31G(d,p) level of theory. The reaction proceeds mainly by SN2 initial chloride displacement rather than SN2′-type attack. Furthermore, according to the rate of
S. Bhattacharyya, K. Hatua
doaj   +1 more source

In-biofilm generation of nitric oxide using a magnetically-targetable cascade-reaction container for eradication of infectious biofilms

open access: yesBioactive Materials, 2022
Cascade-reaction chemistry can generate reactive-oxygen-species that can be used for the eradication of infectious biofilms. However, suitable and sufficient oxygen sources are not always available near an infection site, while the reactive-oxygen ...
Guang Yang   +10 more
doaj   +1 more source

Facile Synthesis of 2H-Benzo[h]Chromenes via an Arylamine-Catalyzed Mannich Cyclization Cascade Reaction

open access: yesMolecules, 2021
A simple arylamine-catalyzed Mannich-cyclization cascade reaction was developed for facile synthesis of substituted 2H-benzo[h]chromenes. The notable feature of the process included the efficient generation of ortho-quinone methides (o-QMs) catalyzed by ...
Yueteng Zhang   +5 more
doaj   +1 more source

A Porphyrin-Based Covalent Organic Framework as Metal-Free Visible-LED-Light Photocatalyst for One-Pot Tandem Benzyl Alcohol Oxidation/Knoevenagel Condensation

open access: yesNanomaterials, 2023
A porphyrin-based covalent organic framework (COF), namely Porph-UOZ-COF (UOZ stands for the University of Zabol), has been designed and prepared via the condensation reaction of 5,10,15,20-tetrakis-(3,4-dihydroxyphenyl)porphyrin (DHPP) with 1,4 ...
Sara Oudi   +5 more
doaj   +1 more source

Acetaldehyde in the Enders triple cascade reaction via acetaldehyde dimethyl acetal

open access: yesBeilstein Journal of Organic Chemistry, 2023
Asymmetric organocatalyzed multicomponent reactions represent an important toolbox in the field of organic synthesis to build complex scaffolds starting from simple starting materials.
Alessandro Brusa   +7 more
doaj   +1 more source

Synthesis of a Pyrrolo[1,2-a]quinazoline-1,5-dione Derivative by Mechanochemical Double Cyclocondensation Cascade

open access: yesMolecules, 2022
N-heterocyclic compounds, such as quinazolinone derivatives, have significant biological activities. Nowadays, as the demand for environmentally benign, sustainable processes increases, the application of compounds from renewable sources, easily ...
Vanessza Judit Kolcsár   +1 more
doaj   +1 more source

A Five-Component Biginelli-Diels-Alder Cascade Reaction

open access: yesFrontiers in Chemistry, 2018
A new multi-component condensation was discovered during the reaction of a urea, β-keto ester, and formaldehyde. In the presence of catalytic indium bromide, a Biginelli dihydropyrimidinone intermediate was further converted to a five-component ...
Taber S. Maskrey   +3 more
doaj   +1 more source

Ethyl 2-[2-(4-Nitrobenzoyl)-1H-indol-3-yl]acetate

open access: yesMolbank, 2017
Ethyl 2-[2-(4-nitrobenzoyl)-1H-indol-3-yl]acetate was prepared in good yield and characterized by the aza-alkylation/intramolecular Michael cascade reaction of (E)-ethyl 3-[2-(tosylamino)phenyl]acrylate with 2-bromo-4′′-nitroacetophenone, followed by ...
Sunyoung Choi, Sung-Gon Kim
doaj   +1 more source

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