M–N–C materials as heterogeneous catalysts for organic transformations

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 497, P. 215412 - 215412

Published: Sept. 17, 2023

Language: Английский

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Opportunities from Metal Organic Frameworks to Develop Porous Carbons Catalysts Involved in Fine Chemical Synthesis

Catalysts, Journal Year: 2023, Volume and Issue: 13(3), P. 541 - 541

Published: March 8, 2023

In the last decade, MOFs have been proposed as precursors of functional porous carbons with enhanced catalytic performances by comparison other traditional carbonaceous catalysts. This area is rapidly growing mainly because great structural diversity offering almost infinite possibilities. can be considered ideal platforms to prepare highly dispersed metallic species or even single-metal atoms under strictly controlled thermal conditions. review briefly summarizes synthetic strategies and MOF-derived carbons. The main focus relies on application fine chemical synthesis. Among most explored reactions, oxidation reduction reactions are highlighted, although some examples coupling multicomponent also presented. However, this type catalyst in green synthesis biologically active heterocyclic compounds through cascade still a challenge.

Language: Английский

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Synthesis of the dibenzo[b,d]azepine skeleton via a catalyst-free ring expansion domino reaction

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(7), P. 3786 - 3790

Published: Jan. 1, 2024

A hitherto unreported catalyst-free ring expansion reaction of tetrahydroisoquinolines with o -alkynylarylaldehydes for the construction dibenzo[ b , d ]azepine skeleton is described.

Language: Английский

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(NH₄)₂S₂O₈ promoted tandem radical cyclization of quinazolin-4(3H)-ones with oxamic acids for the construction of fused quinazolinones under metal-free conditions

Organic & Biomolecular Chemistry, Journal Year: 2024, Volume and Issue: 22(11), P. 2241 - 2251

Published: Jan. 1, 2024

A novel cascade radical addition/cyclization reaction of non-activated olefins and oxamic acids has been proposed.

Language: Английский

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TFA/TBHP-promoted oxidative cyclisation for the construction of tetracyclic quinazolinones and rutaecarpine

Organic Chemistry Frontiers, Journal Year: 2020, Volume and Issue: 7(13), P. 1635 - 1639

Published: Jan. 1, 2020

An efficient TFA/TBHP-promoted oxidative cyclisation of readily available isatins with 1,2,3,4-tetrahydroisoquinolines has been firstly developed. The potential utility this strategy was demonstrated by one-step synthesis a natural alkaloid Rutaecarpin.

Language: Английский

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Recent Advances in the Use of 2‐Aminobenzyl Alcohols in the Synthesis of Quinolines, Quinazolines and Other N‐Heterocycles

Advanced Synthesis & Catalysis, Journal Year: 2024, Volume and Issue: 366(10), P. 2142 - 2164

Published: Jan. 17, 2024

Abstract N‐Heterocyclic compounds, in particular, quinolines and quinazolines are frequently used medicinal chemistry. Therefore, the direct clean synthesis of these valuable scaffolds has been a great interest for many years. 2‐Aminobenzyl alcohols as an alternative reactant instead unstable expensive 2‐aminobenzaldehydes can be construction N‐fused heterocycles including quinolines, quinazolines, oxazines, thiazines, selenazines, imidazoles, diazepines, etc. In this review article, we have discussed recent developments use 2‐aminobenzyl diverse heterocycles.

Language: Английский

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The Aza-Diels-Alder Reaction Between Cyclic Imine and Aza-ortho-quinone Methide Precursor to Access Polycyclic-fused Tetrahydroquinazoline

Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134665 - 134665

Published: April 1, 2025

Language: Английский

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Cu(II)-Doped ZIF-8 as a Sustainable Catalyst for the Dehydrogenative Coupling of 2-Aminobenzamide with Methanol

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

In this study, an effective and stable Cu2+ incorporated within the lattice of ZIF-8 was hydrothermally synthesized employed as a heterogeneous catalyst for dehydrogenative coupling between 2-aminobenzamide CH3OH. The Cu2+-doped (Cu@ZIF-8) catalysts were firmly characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission photoelectron UV-visible diffuse reflectance spectra, Brunauer-Emmett-Teller techniques to examine their structural, morphological, elemental, optical, surface properties. catalytic efficiency Cu@ZIF-8 investigated in synthesis quinazolinone from CH3OH C1 source with Cs2CO3 base under oxygen atmosphere. Among different catalysts, 30% demonstrated superior activity formation compared pristine ZIF-8, indicating that doping ions provides synergetic effect during reaction. Furthermore, reusability experiments carried out catalyst, observed findings show is maintained up four cycles. structural integrity along morphology chemical structure reused solid also verified, no significant differences fresh solids plausible reaction mechanism proposed.

Language: Английский

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Hydrogen transfer-mediated selective dual C–H alkylations of 2-alkylquinolines by doped TiO2-supported nanocobalt oxides

Journal of Catalysis, Journal Year: 2019, Volume and Issue: 377, P. 449 - 454

Published: Aug. 17, 2019

Language: Английский

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Catalyst-free cyclization of anthranils and cyclic amines: one-step synthesis of rutaecarpine

Chemical Communications, Journal Year: 2019, Volume and Issue: 55(80), P. 12072 - 12075

Published: Jan. 1, 2019

An efficient synthesis of rutaecarpine derivatives via a catalyst-free and atom-efficiency cyclization reaction between commercially available anthranils cyclic amines is described.

Language: Английский

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