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   Articles with "intramolecular cyclization" as a keyword



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Synthesis of Structurally Diverse Benzotriazoles via Rapid Diazotization and Intramolecular Cyclization of 1,2-Aryldiamines

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recommendations! Published in 2019 at "European Journal of Organic Chemistry"

DOI: 10.1002/ejoc.201900463

Abstract: An operationally simple method has been developed for the preparation of N‐unsubstituted benzotriazoles by diazotization and intramolecular cyclization of a wide range of 1,2‐aryldiamines under mild conditions, using a polymer‐supported nitrite reagent and p‐tosic acid.… read more here.

Keywords: intramolecular cyclization; synthesis structurally; diazotization intramolecular; cyclization ... See more keywords
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Synthesis of pyridone-substituted furan-2(5H)-ones and their intramolecular cyclization to afford furo[3,4-f]isoquinolines

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recommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"

DOI: 10.1007/s10593-019-02608-0

Abstract: Synthetic approach toward pyridone-substituted furan-2(5H)-ones has been described. Intramolecular cyclization of these compounds leads to novel 7-substituted furo[3,4-f]isoquinolines in moderate to high yields. read more here.

Keywords: intramolecular cyclization; substituted furan; pyridone substituted; furan ones ... See more keywords
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Hydrogenated intramolecular cyclization of diphenylmethane derivatives for synthesizing high-density biofuel

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recommendations! Published in 2017 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2017.07.034

Abstract: Abstract Multi-cyclic hydrocarbons from biomass are sustainable alternative for jet fuel. Here we report an unexpected hydrogenated intramolecular cyclization of diphenylmethane derivatives synthesized by alkylation of bio-derived compounds. With the presence of commonly used zeolite-Pd/C… read more here.

Keywords: cyclization diphenylmethane; intramolecular cyclization; hydrogenated intramolecular; cyclization ... See more keywords
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Facile and practical synthesis of π-extended oxepins by benzannulation and intramolecular cyclization

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recommendations! Published in 2019 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2018.12.008

Abstract: Abstract π-Extended oxepins 1 and dimer 8 were synthesized by the benzannulation of the corresponding asymmetric diarylacetylene derivatives and 2-(phenylethynyl)benzaldehyde followed by the Cu-catalyzed intramolecular cyclization. The optical properties of the π-extended oxepins 1 and… read more here.

Keywords: intramolecular cyclization; extended oxepins; benzannulation; facile practical ... See more keywords
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Synthesis of 3-Amino-5-fluoroalkylfurans by Intramolecular Cyclization.

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recommendations! Published in 2021 at "Organic letters"

DOI: 10.1021/acs.orglett.1c01672

Abstract: A synthesis to access rarely described 3-amino-5-fluoroalkylfurans has been developed by cyclization of easily accessible fluorovinamides. This method is rapid and simple and affords the desired furans as hydrochloride salts in quantitative or nearly quantitative… read more here.

Keywords: amino fluoroalkylfurans; intramolecular cyclization; cyclization; synthesis amino ... See more keywords
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Rhodium-Catalyzed Intramolecular Cyclization to Synthesize 2-Aminobenzofurans via Carbene Metathesis Reactions.

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recommendations! Published in 2023 at "Organic letters"

DOI: 10.1021/acs.orglett.3c00539

Abstract: Herein, we report a new method of synthesizing of 2-aminobenzofuran 3-enes via the formal C-S insertion reaction of alkyne-tethered diazo compounds. Metal carbene, as a kind of active synthetic intermediate, plays a very important role… read more here.

Keywords: catalyzed intramolecular; metathesis; cyclization synthesize; rhodium catalyzed ... See more keywords
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Computational Studies on the Mechanisms of Nonenzymatic Intramolecular Cyclization of the Glutamine Residues Located at N-Termini Catalyzed by Inorganic Phosphate Species

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recommendations! Published in 2020 at "ACS Omega"

DOI: 10.1021/acsomega.9b04384

Abstract: Glutamine (Gln) residues located at N-termini undergo spontaneous intramolecular cyclization, causing the formation of pyroglutamic acid (pGlu) residues. pGlu residues have been detected at the N-termini in various peptides and proteins. The formation of pGlu… read more here.

Keywords: intramolecular cyclization; pglu residues; residues located; phosphate species ... See more keywords
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Oxidation of active sp3 C–H bonds initiated consecutive intermolecular/intramolecular cyclization between glycine derivatives and o-vinylphenols: construction of a polycyclic benzofuroquinoline skeleton

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recommendations! Published in 2018 at "Organic chemistry frontiers"

DOI: 10.1039/c8qo00444g

Abstract: Consecutive intermolecular/intramolecular cyclization between N-arylglycine derivatives and 2-hydroxylstyrenes was realized through radical cation salt-initiated sp3 C–H bond oxidation. This reaction provided a new route to forge this biologically important polycyclic benzofuroquinoline skeleton in a single… read more here.

Keywords: consecutive intermolecular; intermolecular intramolecular; intramolecular cyclization; cyclization ... See more keywords
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Intramolecular cyclization of m-homoprenylphenols through oxidative nucleophilic aromatic substitution.

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recommendations! Published in 2022 at "Chemical communications"

DOI: 10.1039/d2cc06026d

Abstract: We developed an intramolecular cyclization of m-homoprenylphenols and related m-prenylphenols to bicyclic skeletons by hypervalent iodine reagents through an oxidative nucleophilic aromatic substitution using the prenyl group as a carbon nucleophile. The reaction was applicable… read more here.

Keywords: aromatic substitution; nucleophilic aromatic; oxidative nucleophilic; cyclization homoprenylphenols ... See more keywords
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Facile synthesis of isoquinolines and isoquinoline N-oxides via a copper-catalyzed intramolecular cyclization in water

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recommendations! Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra06097c

Abstract: A highly efficient method for the facile access of isoquinolines and isoquinoline N-oxides via a Cu(i)-catalyzed intramolecular cyclization of (E)-2-alkynylaryl oxime derivatives in water has been developed. This protocol was performed under simple and mild… read more here.

Keywords: catalyzed intramolecular; oxides via; isoquinoline oxides; isoquinolines isoquinoline ... See more keywords
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Facile one-pot synthesis of 5-substituted isoxazoles and pyrazoles through microwave-promoted intramolecular cyclization of γ-hydroxyalkynal oximes and hydrazones

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recommendations! Published in 2017 at "Synthetic Communications"

DOI: 10.1080/00397911.2016.1263892

Abstract: ABSTRACT Simple and efficient one-pot synthesis of 5-substituted isoxazoles and pyrazoles has been developed. The formation of the target isoxazoles and pyrazoles is initiated by 1,2-nucleophilic addition of generated in situ hydroxylamine or hydrazine to… read more here.

Keywords: isoxazoles pyrazoles; intramolecular cyclization; pot synthesis; synthesis substituted ... See more keywords