Results 21 to 30 of about 15,428,250 (243)

Highly efficient construction of multi-substituted aminopyrazoles derivatives via iodine-mediated three-components reaction as potential anticancer agents

open access: yesGreen Chemistry Letters and Reviews, 2023
As an important class of natural products, pyrazole alkaloids have a large number of applications in various aspects such as medicines and pesticides. Due to the special position of its amino group, 3-aminopyrazole is easy to form a hydrogen bond donor ...
Zilin Gao   +9 more
doaj   +1 more source

Three-Component Minisci Reaction with 1,3-Dicarbonyl Compounds Induced by Visible Light

open access: yes, 2020
A three-component Minisci reaction coupling of 1,3-dicarbonyl compounds with vinyl ethers and quinolines or isoquinolines under visible light is developed.
Yang Zhang (30734)   +11 more
core   +1 more source

A Nanovessel-Catalyzed Three-Component Aza-Darzens Reaction [PDF]

open access: yesJournal of the American Chemical Society, 2020
It has been previously demonstrated that nanovessels can be highly competent catalysts providing high rate accelerations and unique selectivity to the organic transformations which they mediate. However, for supramolecular assemblies to be considered a standard reagent in organic synthesis they must first demonstrate the ability to catalyze ...
Stephen M. Bierschenk   +3 more
openaire   +4 more sources

Three-Component Cycloaddition To Synthesize Aziridines and 1,2,3-Triazolines

open access: yes, 2019
An efficient three-component cycloaddition of oxa­(aza)­bicyclic alkenes/norbornene in the presence of NaN3 and arylsulfonyl chlorides was developed, affording the corresponding aziridine products in good yields (up to 82%) with moderate to good endo/exo
Donghan Chen (2146306)   +8 more
core   +3 more sources

Synthesis of Novel Azo-Linked 5-Amino-Pyrazole-4-Carbonitrile Derivatives Using Tannic Acid–Functionalized Silica-Coated Fe3O4 Nanoparticles as a Novel, Green, and Magnetically Separable Catalyst

open access: yesFrontiers in Chemistry, 2021
Tannic acid–linked silica-coated Fe3O4 nanoparticles (Fe3O4@SiO2@Tannic acid) were prepared and characterized by transmission electron microscope (TEM), field emission scanning electron microscope (FE-SEM), X-ray powder diffraction (XRD), X-ray ...
Farhad Sedighi Pashaki   +1 more
doaj   +1 more source

Novel one-pot process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
A facile one-pot two-step process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates via the cyclocondensation of ethyl 2-thiocyanatoacetoacetate with a variety of hydrazine and hydrazide derivatives has been ...
Beyzaei Hamid, Aryan Reza, Moghadas Hadi
doaj   +1 more source

Microwave-assisted Synthesis of Acridine-1,8(2H,5H)-diones via a One-pot, Three Component Reaction [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2017
A new and improved protocol for the synthesis, in good to excellent yields, of acridine-1,8(2H,5H)-diones is described, involving a one-pot, three component reaction of dimedone, arylglyoxals, and ammonium acetate in water under microwave irradiation.
Ahmad Poursattar Marjani   +3 more
doaj  

Bifunctional thiourea-catalyzed asymmetric [3 + 2] annulation reactions of 2-isothiocyanato-1-indanones with barbiturate-based olefins

open access: yesBeilstein Journal of Organic Chemistry, 2022
Bifunctional thiourea-catalyzed asymmetric [3 + 2] annulation reactions of 2-isothiocyanato-1-indanones with barbiturate-based olefins have been developed to afford chiral dispiro[indene-pyrrolidine-pyrimidine]s.
Jiang-Song Zhai, Da-Ming Du
doaj   +1 more source

A one pot three-component reaction for the preparation of dihydroquinolines with two different ketones and aromatic amines

open access: yes, 2017
A three component reaction with two different ketones and aromatic amines was firstly investigated. The difference in reactivity between ordinary ketones and ketone esters allowed for the production of 1,2-DHQs efficiently.
Li, GX (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Nat Prod Res Ctr, Chengdu 610041, Sichuan, Peoples R China.   +5 more
core   +1 more source

Visible Light-Induced Sulfonylation/Arylation of Styrenes in a Double Radical Three-Component Photoredox Reaction [PDF]

open access: yes, 2019
Simultaneous sulfonylation/arylation of styrene derivatives is achieved in a photoredox-catalyzed three-component reaction using visible light.
Lisa Marie, Kammer   +9 more
core   +2 more sources

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