Results 41 to 50 of about 3,294 (234)

Engaging Isatins in Multicomponent Reactions (MCRs) – Easy Access to Structural Diversity [PDF]

open access: yes, 2021
Multicomponent reactions (MCRs) are a valuable tool in diversity-oriented synthesis. Its application to privileged structures is gaining relevance in the fields of organic and medicinal chemistry.
Brandão, Pedro   +4 more
core   +1 more source

Deep Eutectic Solvents: The Organic Reaction Medium of the Century [PDF]

open access: yes, 2016
This microreview summarizes the use of deep eutectic solvents (DESs) and related melts in organic synthesis. Solvents of this type combine the great advantages of other proposed environmentally benign alternative solvents, such as low toxicity, high ...
Abbott   +192 more
core   +2 more sources

Recent Advances in Biocatalytic Promiscuity: Hydrolase-Catalyzed Reactions for Nonconventional Transformations [PDF]

open access: yes, 2015
Financial support from the Spanish Ministerio de Economía y Competitividad (CTQ2013-44153-P) is grateful acknowledged. M.L.-I.
Gotor Fernández, Vicente   +1 more
core   +2 more sources

Stereoselective synthesis of tetrahydroindolizines via catalytic formation of pyridinium ylides from diazo compounds [PDF]

open access: yes, 2016
Commercially available iron (III) and copper (I) complexes catalyze new multicomponent cycloadditions between diazo compounds, pyridines and electrophilic alkenes to give alkaloid-inspired tetrahydroindolizidines in high yields and diastereoselectivities.
Aggarwal   +29 more
core   +1 more source

Studies on the Enantioselective Synthesis of E-Ethylidene-bearing Spiro[indolizidine-1,3′-oxindole] Alkaloids [PDF]

open access: yes, 2021
A synthetic route for the enantioselective construction of the tetracyclic spiro[indolizidine-1,3'-oxindole] framework present in a large number of oxindole alkaloids, with a cis H-3/H-15 stereochemistry, a functionalized two-carbon substituent at C-15 ...
Amat Tusón, Mercedes   +4 more
core   +1 more source

One-pot three-component synthesis of novel spirooxindoles with potential cytotoxic activity against triple-negative breast cancer MDA-MB-231 cells

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2018
Triple-negative breast cancer (TNBC) is a highly aggressive malignancy with limited treatment options due to its heterogeneity and the lack of well-defined molecular targets.
Wagdy M. Eldehna   +5 more
doaj   +1 more source

A synergetic effect of sonication with yolk-shell nanocatalyst for green synthesis of spirooxindoles

open access: yesGreen Chemistry Letters and Reviews, 2021
A synergetic effect of ultrasonic irradiation and yolk–shell nanocatalyst was examined for the synthesis of spirooxindoles from isatin, malononitrile and cyclohexanone.
Somaye Mohammadi, Hossein Naeimi
doaj   +1 more source

An Efficient Synthesis of Oxygen-Bridged Spirooxindoles via Microwave-Promoted Multicomponent Reaction

open access: yesMolecules, 2023
A microwave-promoted multicomponent reaction of isatins, α-amino acids and 1,4-dihydro-1,4-epoxynaphthalene is achieved under environmentally friendly conditions, delivering oxygen-bridged spirooxindoles within 15 min in good to excellent yields.
Yaojing Shi, Hua Zhao, Yufen Zhao
doaj   +1 more source

Organocatalyzed Asymmetric Reaction Using α-Isothiocyanato Compounds [PDF]

open access: yes, 2016
Organocatalyzed asymmetric reaction using α-isothiocyanato compounds has received much attention in the past 5 years, and significant progress has been made for three types of isothiocyanato compounds, including α-isothiocyanato amides, esters, and ...
Chen, Yong-Zheng   +4 more
core   +2 more sources

Sonochemical multi-component synthesis of spirooxindoles

open access: yesUltrasonics Sonochemistry, 2011
New and efficient multi-component methods have been developed for the synthesis of spirooxindoles in the presence of a catalytic amount of p-TSA as an inexpensive and available catalyst in EtOH under ultrasound irradiation. The method is simple, starts from readily accessible commercial starting materials, and provides biologically interesting products
Minoo, Dabiri   +3 more
openaire   +2 more sources

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