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   Articles with "mediated cyclization" as a keyword



Ammonium Ylide Mediated Cyclization Reactions

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recommendations! Published in 2018 at "Asian journal of organic chemistry"

DOI: 10.1002/ajoc.201800091

Abstract: The use of readily accessible ammonium ylides for (asymmetric) transformations, especially cyclization reactions, has received considerable attention over the past two decades. A variety of highly enantioselective protocols to facilitate annulation reactions have recently been… read more here.

Keywords: ammonium ylide; cyclization reactions; ylide mediated; mediated cyclization ... See more keywords

Dicarbofunctionalization of Alkenes/Alkynes via CAN‐Mediated Cyclization Reactions

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recommendations! Published in 2025 at "Asian Journal of Organic Chemistry"

DOI: 10.1002/ajoc.202500326

Abstract: Ceric ammonium nitrate (CAN) was utilized to transform readily available terminal alkenes/alkynes to the corresponding chroman‐4‐one/chromenoquinoline analogues. Interestingly, the type of unsaturation on the substrate dictates the course of the CAN‐mediated cyclization reaction. With alkenes,… read more here.

Keywords: mediated cyclization; dicarbofunctionalization alkenes; alkynes via; cyclization ... See more keywords

Copper-Mediated Cyclization of Terminal Alkynes with CF3-Imidoyl Sulfoxonium Ylides To Construct 5-Trifluoromethylpyrroles.

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recommendations! Published in 2024 at "Organic letters"

DOI: 10.1021/acs.orglett.4c00423

Abstract: A copper-mediated [3 + 2] cyclization of CF3-imidoyl sulfoxonium ylides and terminal alkynes has been demonstrated. This work provides a practical approach for assembling 5-trifluoromethylpyrroles with the merits of a broad substrate scope, good functional… read more here.

Keywords: sulfoxonium ylides; terminal alkynes; mediated cyclization; cf3 imidoyl ... See more keywords

Iodine(III)-Mediated Cyclization Cascade of Diynes to Benzofulvene Derivatives

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recommendations! Published in 2025 at "Organic Letters"

DOI: 10.1021/acs.orglett.5c03133

Abstract: We report here a concise and regioselective synthesis of benzofulvene derivatives via an iodine(III)-mediated cyclization cascade of diynes. For 1,2-dialkynylbenzene substrates, the iodanylative cyclization is accompanied by triflation or fluorination, depending on the iodine(III) reagent,… read more here.

Keywords: iii mediated; cascade; mediated cyclization; iodine iii ... See more keywords
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(CH3)2CuLi/Cu(OTf)2 Mediated N- or O-Cyclization of Urea-Tethered Cyclobuta[ b]indolines.

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recommendations! Published in 2019 at "Organic letters"

DOI: 10.1021/acs.orglett.8b03565

Abstract: A (CH3)2CuLi/Cu(OTf)2 mediated N- or O-cyclization of urea-tethered cyclobuta[ b]indolines has been reported in this paper, giving a new synthetic protocol for the construction of pyrimido[1,6- a]indolone and cyclic imidate derivatives in moderate to good… read more here.

Keywords: 2culi otf; ch3 2culi; otf mediated; mediated cyclization ... See more keywords
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Density Functional Theory Guide for an Allyl Monomer Polymerization Mechanism: Photoinduced Radical-Mediated [3 + 2] Cyclization

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recommendations! Published in 2021 at "ACS Omega"

DOI: 10.1021/acsomega.1c00165

Abstract: Polymerization of allyl ether monomers has previously been considered a free-radical addition polymerization mechanism, but it is difficult to achieve because of the high electron density of their double bond. To interpret the mechanism of… read more here.

Keywords: allyl ether; mechanism; mediated cyclization; radical mediated ... See more keywords
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Recent advances in metal catalyzed or mediated cyclization/functionalization of alkynes to construct isoxazoles

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recommendations! Published in 2020 at "Organic chemistry frontiers"

DOI: 10.1039/d0qo00609b

Abstract: Isoxazoles and their derivatives represent privileged heteroaromatic motifs, which exhibit remarkable biological and pharmaceutical activities. Notably, metal catalyzed or mediated cyclization/functionalization of alkynes such as alkynone oxime ethers, acetylinic oximes, propargylic amino ethers, alkynyl nitrile… read more here.

Keywords: catalyzed mediated; mediated cyclization; cyclization functionalization; functionalization alkynes ... See more keywords

EDA complex mediated [3+2] cyclization for the construction of CF3-oxadiazoles

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recommendations! Published in 2024 at "Green Chemistry"

DOI: 10.1039/d4gc05267f

Abstract: The diazotrifluoroethyl radical is an essential and prevalent reactive intermediate for fluorine-containing organic molecules. Herein, we report the design and application of α-diazo sulfonium triflates−dihydropyridines electron donor-acceptor (EDA) complex and... read more here.

Keywords: cf3 oxadiazoles; complex mediated; construction cf3; mediated cyclization ... See more keywords

Phosphine-Mediated [3+2] Cyclization for the Synthesis of Coumarin-Based CF 3 -Containing Furanones

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recommendations! Published in 2022 at "Synlett"

DOI: 10.1055/s-0042-1751434

Abstract: A tertiary phosphine-mediated [3+2] cyclization reaction of ynones with fluorinated coumarin derivatives has been developed to give a series of coumarin-based CF3-containing furanones in moderate to good yields under mild reaction conditions. Preliminary investigation into… read more here.

Keywords: coumarin based; phosphine mediated; containing furanones; mediated cyclization ... See more keywords