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   Articles with "iii catalyzed" as a keyword



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Rh(III)-Catalyzed Redox-Neutral [4+2] Annulation for Direct Assembly of 3-Acyl Isoquinolin-1(2H)-ones as Potent Antitumor Agents.

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recommendations! Published in 2020 at "ChemPlusChem"

DOI: 10.1002/cplu.201900616

Abstract: By virtue of an efficient rhodium(III)-catalyzed redox-neutral C-H activation/ring-opening of a strained ring/[4+2] annulation cascade of N-methoxybenzamides with propargyl cycloalkanols, diverse 3-acyl isoquinolin-1(2H)-ones were directly obtained in good yields and with excellent functional group compatibility.… read more here.

Keywords: annulation; iii catalyzed; redox neutral; isoquinolin ones ... See more keywords
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Cp*Rh(III)-catalyzed C(sp3) H alkenylation and arylation of 8-methylquinolines with quinones and thiophenes

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recommendations! Published in 2019 at "Catalysis Communications"

DOI: 10.1016/j.catcom.2019.05.008

Abstract: Abstract Rh(III)-catalyzed oxidative cross-coupling of C(sp3) H bonds with C(sp2) H bonds has been accomplished under mild conditions. This method furnishes a streamlined route for the C(sp3) H alkenylation and arylation of 8-methylquinolines. This protocol… read more here.

Keywords: sp3 alkenylation; iii catalyzed; alkenylation arylation; arylation methylquinolines ... See more keywords
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Origins of chemoselectivity of Rh(III)-Catalyzed C–H activation of N-(pivaloyloxy)benzamide: Insights from density functional theory calculations

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recommendations! Published in 2019 at "Journal of Organometallic Chemistry"

DOI: 10.1016/j.jorganchem.2018.11.011

Abstract: Abstract An unprecedented Rh(III)-catalyzed C–H activation of N-(pivaloyloxy)benzamide was recently reported by Feng et al. In this transformation, the substituent on the alkyne controls the chemoselectivity (annulation or hydroarylation). Given the importance of this novel strategy,… read more here.

Keywords: iii catalyzed; chemoselectivity; catalyzed activation; activation pivaloyloxy ... See more keywords
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Rh(III)-catalyzed C–H activation-desymmetrization of diazabicycles using enol as directing group: A straightforward approach to difunctionalized cyclopentenes

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recommendations! Published in 2018 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2018.02.063

Abstract: Abstract A Rh(III)-catalyzed C–H activation-desymmetrization of diazabicycles with o-vinylphenols as an efficient approach to alkenyl-substituted aminocyclopentenes is reported. This protocol represents another classic example for direct C–H activation of terminal alkenes using enol as directing… read more here.

Keywords: desymmetrization diazabicycles; using enol; iii catalyzed; catalyzed activation ... See more keywords
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Rhodium(III)-catalyzed direct C-7 sulfonamidation and amination of indolines with arylsulfonamides and trifluoroacetamide

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recommendations! Published in 2019 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2019.03.069

Abstract: Abstract A rhodium-catalyzed direct C–H sulfonamidation and amidation of C-7 position of indolines by simple and commercially available arylsulfonamides and trifluoroacetamide has been developed, affording a series of N -arylsulfonamides and N -aryltrifluoroacetamides in moderate… read more here.

Keywords: iii catalyzed; catalyzed direct; rhodium iii; arylsulfonamides trifluoroacetamide ... See more keywords
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Indium(III)-catalyzed intramolecular addition of silyl enolates to alkynes

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recommendations! Published in 2019 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2019.05.055

Abstract: Abstract In the presence of water and a catalytic amount of InBr3, intramolecular trans-addition of silyl enolates derived from ketones and an aldehyde to alkynes proceeded smoothly to give 4 to 7-membered carbocycles bearing an… read more here.

Keywords: addition silyl; indium iii; iii catalyzed; silyl enolates ... See more keywords
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Rhodium(III)-catalyzed chelation-assisted C-H imidation of arenes via umpolung of the imidating reagent

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recommendations! Published in 2020 at "Chinese Journal of Catalysis"

DOI: 10.1016/s1872-2067(20)63587-2

Abstract: Abstract Rh(III)-catalyzed, chelation-assisted oxidative C−H imidation of arenes with N−H imide have been realized using PhI(OAc)2 as an oxidant. This transformation exhibits a broad substrate scope and tolerates various functional groups. The reaction proceeded via… read more here.

Keywords: iii; chelation assisted; catalyzed chelation; iii catalyzed ... See more keywords
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Computational Studies on Rhodium(III) Catalyzed C–H Functionalization versus Deoxygenation of Quinoline N-Oxides with Diazo Compounds

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recommendations! Published in 2017 at "Organometallics"

DOI: 10.1021/acs.organomet.6b00857

Abstract: Density functional theory calculations have been performed to study the reaction mechanisms for the Rh(III)-catalyzed C–H functionalization versus deoxygenation of quinoline N-oxide (QNO) with diazo compounds, dimethyl diazomalonate and methyl phenyldiazoacetate. How different diazo compounds… read more here.

Keywords: functionalization versus; deoxygenation quinoline; diazo compounds; versus deoxygenation ... See more keywords
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Rhodium(III)-Catalyzed Oxidative Annulation of 4-Aminoquinolines and Acrylate through Two Consecutive C(sp2)-H Activations.

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recommendations! Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c00630

Abstract: The C-H annulation of the five-position of quinolines and acrylates to afford heterocycles is an active field of research in organic synthesis. Herein the annulation of 4-aminoquinolines with acrylates through two consecutive C-H activations catalyzed… read more here.

Keywords: two consecutive; annulation; iii catalyzed; annulation aminoquinolines ... See more keywords
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Rhodium(III)-Catalyzed Asymmetric Addition of Inert Arene C-H Bond to Aldehydes To Afford Enantioenriched Phthalides.

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recommendations! Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c01052

Abstract: An asymmetric rhodium(III)-catalyzed Grignard-type addition of inert arene C-H bond to aldehydes is reported. It provides a new strategy for the synthesis of chiral 3-substituted phthalides in good yields (up to 87%) with high enantiomeric… read more here.

Keywords: addition inert; addition; iii catalyzed; arene bond ... See more keywords
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Rhodium(III)-Catalyzed [4+3] Annulation of N-Aryl-pyrazolidinones and Propargylic Acetates: Access to Benzo[c][1,2]diazepines.

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recommendations! Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c01139

Abstract: The generation of 2,3-dihydro-benzo[c][1,2]diazepine derivatives via rhodium(III)-catalyzed [4+3] annulation of pyrazolidinones and propargylic acetates is disclosed. The reaction proceeds smoothly under relatively mild conditions from propargylic acetates as novel C3 synthons. A range of dinitrogen-fused… read more here.

Keywords: propargylic acetates; benzo; iii catalyzed; pyrazolidinones propargylic ... See more keywords