Progress in heterocyclic chemistry, Год журнала: 2023, Номер unknown, С. 387 - 424
Опубликована: Янв. 1, 2023
Язык: Английский
Progress in heterocyclic chemistry, Год журнала: 2023, Номер unknown, С. 387 - 424
Опубликована: Янв. 1, 2023
Язык: Английский
Advanced Synthesis & Catalysis, Год журнала: 2021, Номер 363(10), С. 2502 - 2528
Опубликована: Март 25, 2021
Abstract Oximes represent one of the fundamental organic compound classes with a wide range synthetic applications. In last decade O ‐substituted oximes were recognized as synthetically available and versatile precursors iminyl radicals via one‐electron oxidation or reduction employing visible light photoredox catalysts, salts abundant metals (such Cu Fe), other convenient reagents. Iminyl are powerful synthons for various processes cyclization, ring‐opening, CH‐functionalization, coupling. The present review is focused on methods based oxime‐derived developed in few years excluding ring opening reactions cyclic that summarized recent publications. consists two main parts: (1) involving 1,n‐hydrogen atom transfer (n=5 most cases) (2) addition radical to carbon‐carbon π‐bond. magnified image
Язык: Английский
Процитировано
71The Journal of Organic Chemistry, Год журнала: 2022, Номер 87(13), С. 8351 - 8367
Опубликована: Июнь 21, 2022
Herein, we report a simple, phosphine-free, and inexpensive catalytic system based on manganese(II) complex for synthesizing different important N-heterocycles such as quinolines, pyrroles, pyridines from amino alcohols ketones. Several control experiments, kinetic studies, DFT calculations were carried out to support the plausible reaction mechanism. We also detected two potential intermediates in cycle using ESI-MS analysis. Based these metal-ligand cooperative mechanism was proposed.
Язык: Английский
Процитировано
41Organometallics, Год журнала: 2023, Номер 42(15), С. 1854 - 1868
Опубликована: Июль 6, 2023
Herein we disclose a series of phosphine-free cobalt(II)-based catalytic systems bearing redox non-innocent amine functionalized azo-aromatic pincer-like ligand for the synthesis quinoline by dehydrogenative oxidation 2-amino benzyl alcohol and subsequent coupling with ketone. All precatalysts were characterized thoroughly using various spectroscopic techniques DFT studies. The protocol was efficient versatile, providing major advances in quinoline. It also found to be applicable gram-scale quinolines as well. Several control experiments, kinetic studies, studies have proposed plausible reaction mechanism where azo-pyridine moiety acts activate α-C–H bond Co(II) → Co(I) reduction leads formation aldehyde. generated aldehyde undergoes base-catalyzed C–C result quinolines. potential controls efficiency precatalysts. Thus, complex 3 most anodic best precatalyst among complexes 1–4.
Язык: Английский
Процитировано
19Advanced Synthesis & Catalysis, Год журнала: 2024, Номер 366(10), С. 2142 - 2164
Опубликована: Янв. 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.
Язык: Английский
Процитировано
4The Journal of Organic Chemistry, Год журнала: 2022, Номер 87(9), С. 5804 - 5816
Опубликована: Апрель 27, 2022
An efficient Cu-catalyzed annulation reaction of ketone oxime acetates with ortho-trifluoroacetyl anilines has been disclosed. With the developed protocol, a series 4-trifluoromethyl quinolines were obtained in good to excellent yields (58-99%) under redox-neutral conditions. The protocol also could be extended ferrocene-based for construction ferrocene-substituted fluorine-containing quinolines.
Язык: Английский
Процитировано
16Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111165 - 111165
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0Advanced Synthesis & Catalysis, Год журнала: 2021, Номер 363(19), С. 4632 - 4638
Опубликована: Авг. 24, 2021
Abstract The iodine‐promoted oxidative domino annulation and carbonylation process has been developed for the synthesis of biologically important azaarene‐substituted bis‐pyrazolo[3,4‐ b :4′,3′‐ e ]pyridines (BPPs), diuracilpyridines o ‐amino diheteroaryl ketones. procedure proceeded with easily available methyl azaarenes, 5‐aminouracils substituted 5‐aminopyrazoles. This protocol is a simple metal‐free approach which exhibits high functional group compatibility broad substrates scope. Moreover, this transformation can be applied preparation dipyrazolo/diuracil‐fused pyridines on gram scale. magnified image
Язык: Английский
Процитировано
16Organic & Biomolecular Chemistry, Год журнала: 2024, Номер 22(31), С. 6393 - 6408
Опубликована: Янв. 1, 2024
Herein, we describe an air- and moisture-stable, homogeneous zinc catalyst stabilised using electron deficient N^N^N pincer-type ligand.
Язык: Английский
Процитировано
1ChemistrySelect, Год журнала: 2022, Номер 7(40)
Опубликована: Окт. 25, 2022
Abstract The synthetic chemists are awakening to make substantial development in finding safer drugs against the rising communicable and non‐communicable type of diseases. By replacing traditional methods more sustainable greener approaches, multicomponent reactions rapid efficient tool for synthesis organic molecules structural diversity complexity. Heterocyclic chemistry transforms small set precursors into series by domino reactions. This review covers recent trends last five years (2018–2022) construction potentially drug‐like quinoline derivatives. discussed here preferable over conventional approaches being inexpensive, consuming lesser reaction time, atom economical, saving energy manpower while avoiding toxic reagents/materials, chemical wastes environmental/occupational benign. contributions covered involve metallic, metal free strategies other catalytic pathways including nanoparticles, ionic liquids photocatalysis which operationally safe reliable.
Язык: Английский
Процитировано
6Tetrahedron Letters, Год журнала: 2023, Номер 128, С. 154700 - 154700
Опубликована: Авг. 10, 2023
Язык: Английский
Процитировано
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