Catalyst-Free Accelerated Three-Component Synthesis of Betti Bases in Microdroplets.
Sign Up to like & getrecommendations! Published in 2022 at "ChemPlusChem"
DOI: 10.1002/cplu.202200206
Abstract: Due to their important roles in medicine and asymmetric metal catalysis, the formation of Betti bases has attracted wide interest in organic chemical community. Traditional multicomponent reaction methods for synthesizing Betti bases normally require long… read more here.
Keywords: betti; accelerated three; catalyst free; synthesis ... See more keywords
Catalyst-Free Synthesis of Alkylpolyglycosides Induced by High-Frequency Ultrasound.
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DOI: 10.1002/cssc.201801137
Abstract: The irradiation of concentrated feeds of carbohydrates in alcoholic solution by high-frequency ultrasound (550 kHz) induces the formation of alkylpolyglycosides (APGs). This work is distinct from previous reports in that it does not involve any (bio)catalyst… read more here.
Keywords: catalyst free; free synthesis; high frequency; frequency ultrasound ... See more keywords
Efficient construction of 5H-1,4-benzodiazepine derivatives by a catalyst-free direct aerobic oxidative annulation strategy.
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DOI: 10.1002/cssc.202100703
Abstract: A catalyst-free direct aerobic oxidative annulation reaction of 2-aminobenzylic amines and α- hydroxyl ketones can efficiently afford the versatile 5 H -1,4-benzodiazepine derivatives by employing air as the economic and green oxidant under mild conditions.… read more here.
Keywords: direct aerobic; free direct; oxidative annulation; benzodiazepine ... See more keywords
Glycerol Induced Catalyst-Free Curing of Epoxy and Vitrimer Preparation.
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DOI: 10.1002/marc.201800889
Abstract: Epoxy vitrimers prepared from anhydride-cured epoxies exhibit, repairable and reprocessable properties; however, they generally rely on a large amount of catalyst for accelerating the dynamic transesterification (DTER). If the catalyst loading is not enough, the… read more here.
Keywords: vitrimer; glycerol; catalyst free; catalyst ... See more keywords
Growth evolution and customized attributes of catalyst-free ZnO nanowires: role of varied Ar/O2 flow rate
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-020-04298-3
Abstract: This paper reports a tailored structure, morphology, optical behavior, and growth evolution of catalyst-free ZnO nanostructures (ZONSs) synthesized on quartz substrates using the wet thermal evaporation method. The as-prepared samples were thoroughly characterized to determine… read more here.
Keywords: flow rate; free zno; growth evolution; catalyst free ... See more keywords
A catalyst-free and green method for synthesis of 9-substituted-9H-diuracilopyrans in magnetized water: experimental aspects and molecular dynamics simulation
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-017-3109-y
Abstract: The reactions of aldehydes and barbituric acid at low temperatures in magnetized water, as a green-promoting medium, provides 9-substituted-9H-diuracilopyrans in high-to-excellent yields. This method offers the advantages of short reaction times, simplicity, low costs, high… read more here.
Keywords: free green; molecular dynamics; magnetized water; water ... See more keywords
Catalyst-free regio- and chemoselective addition of secondary phosphine oxides to isoquinolines
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DOI: 10.1007/s11172-020-2874-8
Abstract: Isoquinolines react with secondary phosphine oxides without catalyst (70–75 °C, 10–15 h, without solvent or in MeCN) to chemo- and regioselectively form previously unknown diadducts, 1,3-bis(diorganylphosphoryl)-1,2,3,4-tetrahydroisoquinolines, in high yields (85–95%). read more here.
Keywords: free regio; secondary phosphine; phosphine oxides; regio chemoselective ... See more keywords
An efficient catalyst-free synthesis of novel chromeno[4,3-b]quinolones through Michael initiated ring closure (MIRC) reaction with in situ generated 3-(arylmethylene)chroman-2,4-diones
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Chemical Sciences"
DOI: 10.1007/s12039-017-1325-z
Abstract: A catalyst-free multicomponent reaction capable of affording a wide range of eighteen novel chromeno[4,3-b]quinolone derivatives (6a–6r) via one-pot two-step domino protocol, in ethylene glycol is reported. Catalyst-free conditions along with green solvent system make the… read more here.
Keywords: eco friendly; novel chromeno; efficient catalyst; reaction ... See more keywords
Catalyst-free biphasic oxidation of Thiophenes in continuous-flow
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DOI: 10.1007/s41981-020-00102-9
Abstract: A mild and practical oxidation process of thiophene derivatives in continuous-flow has been developed. The oxidant phase consists of mCPBA and acetonitrile, which formed an immiscible liquid-liquid segmented flow with the fuel phase. In the… read more here.
Keywords: free biphasic; phase; oxidation; continuous flow ... See more keywords
Thermal conductivity of carbon nanotubes grown by catalyst-free chemical vapor deposition in nanopores
Sign Up to like & getrecommendations! Published in 2019 at "Carbon"
DOI: 10.1016/j.carbon.2019.01.023
Abstract: Abstract A graphitic structure was synthesized by catalyst-free chemical vapor deposition on an anodized aluminum oxide (AAO) template using acetylene as the carbon source at a temperature of 620 °C. The AAO template was removed by… read more here.
Keywords: carbon nanotubes; vapor deposition; free chemical; chemical vapor ... See more keywords
HFIP-promoted catalyst-free cascade reactions for the synthesis of biologically relevant 3,3-di(indolyl)indolin-2-ones from indoles and isatins
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Chemical Letters"
DOI: 10.1016/j.cclet.2020.03.025
Abstract: Abstract The first HFIP-promoted catalyst-free cascade reactions for the synthesis of biologically relevant 3,3-di(indolyl)indolin-2-ones (27 examples, up to 98% yield) from readily available indoles and isatin derivatives are described. This protocol shows well tolerance of… read more here.
Keywords: indolin ones; hfip promoted; indolyl indolin; catalyst free ... See more keywords