Articles with "substituted pyridines" as a keyword



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Synthesis of aryl-substituted pyridines via cyclization of N,N-dialkylanilines with ketoxime carboxylates under metal-organic framework catalysis

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Published in 2017 at "Journal of Industrial and Engineering Chemistry"

DOI: 10.1016/j.jiec.2017.05.028

Abstract: Abstract Iron-organic framework Fe3O(BPDC)3 was synthesized, and subsequently utilized as an productive heterogeneous catalyst for the cyclization reaction of N,N-dialkylanilines with ketoxime carboxylates to produce aryl-substituted pyridines. This iron-organic framework catalyst demonstrated remarkably higher catalytic… read more here.

Keywords: substituted pyridines; aryl substituted; cyclization; synthesis aryl ... See more keywords
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Selective Synthesis of Substituted Pyridines and Pyrimidines through Cascade Annulation of Isopropene Derivatives.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c00124

Abstract: Diverse substituted pyridines and pyrimidines with high selectivity were obtained using a concise and efficient protocol developed herein. The reaction proceeds via metal-free cascade annulation of isopropene derivatives. Using isopropene derivatives as C3 synthons, NH4I… read more here.

Keywords: substituted pyridines; cascade annulation; annulation isopropene; isopropene derivatives ... See more keywords
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Iridium-Catalyzed C–H Borylation of CF3-Substituted Pyridines

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.2c00773

Abstract: Iridium-catalyzed C–H borylation of CF3-substituted pyridines is described in this paper. The boronic ester group can be installed on the α, β, or γ position of pyridine by an appropriate substitution pattern. Sterically governed regioselectivity… read more here.

Keywords: substituted pyridines; iridium catalyzed; cf3 substituted; catalyzed borylation ... See more keywords
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Domino synthesis of fully substituted pyridines by silver-catalyzed chemoselective hetero-dimerization of isocyanides

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Published in 2020 at "Organic chemistry frontiers"

DOI: 10.1039/c9qo01333d

Abstract: A silver-catalyzed hetero-dimerization of various vinyl isocyanides with isocyanoacetamides has been developed. This multistep domino reaction provides a facile protocol for the expedient synthesis of fully substituted pyridines in a single operation from readily available… read more here.

Keywords: silver catalyzed; fully substituted; substituted pyridines; synthesis fully ... See more keywords
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Iodine(i) complexes incorporating sterically bulky 2-substituted pyridines

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra01390h

Abstract: The silver(i) and iodine(i) complexes of the 2-substituted pyridines 2-(diphenylmethyl)pyridine (1) and 2-(1,1-diphenylethyl)pyridine (2), along with their potential protonated side products, were synthesised to investigate the steric limitations of iodine(i) complex formation. The complexes were… read more here.

Keywords: incorporating sterically; iodine complexes; complexes incorporating; substituted pyridines ... See more keywords
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Cationic palladium(ii)-catalyzed synthesis of substituted pyridines from α,β-unsaturated oxime ethers

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra03875g

Abstract: An efficient method for the synthesis of multi-substituted pyridines from β-aryl-substituted α,β-unsaturated oxime ethers and alkenes via Pd-catalyzed C–H activation has been developed. The method, using Pd(OAc)2 and a sterically hindered pyridine ligand, provides access… read more here.

Keywords: substituted pyridines; palladium catalyzed; synthesis; oxime ethers ... See more keywords
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Zinc-catalyzed multicomponent reactions: Facile synthesis of fully substituted pyridines

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Published in 2018 at "Synthetic Communications"

DOI: 10.1080/00397911.2018.1463545

Abstract: Abstract A first example of environmentally benign zinc complex catalyzed one-pot four-component reaction between malononitrile, ketone, ammonium acetate and aromatic aldehyde for the facile synthesis of fully substituted pyridines just within 2 min in environmentally friendly… read more here.

Keywords: fully substituted; substituted pyridines; facile synthesis; synthesis fully ... See more keywords

Divergent reactivities of 2-pyridyl sulfonate esters. Exceptionally mild access to alkyl bromides and 2-substituted pyridines

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Published in 2021 at "Canadian Journal of Chemistry"

DOI: 10.1139/cjc-2020-0510

Abstract: A series of 2- and 3-pyridyl sulfonate and tosylate esters of primary and secondary alcohols were synthesized and evaluated in the bromination reaction with MgBr2·Et2O. The greater coordinating ability of the 2-pyridyl sulfonate esters accounted… read more here.

Keywords: sulfonate esters; divergent reactivities; esters exceptionally; reactivities pyridyl ... See more keywords