Results 141 to 150 of about 23,969 (258)

Ligand Relay Catalysis Enables Asymmetric Migratory Hydroarylation for the Concise Synthesis of Chiral α‐(Hetero)Aryl‐Substituted Amines

open access: yesAdvanced Science
Complementary to the design of a single structurally complex chiral ligand to promote each step in transition‐metal catalysis, multiligand relay catalysis through dynamic ligand exchange with each step in the catalytic cycle promoted by its best ligand ...
Junqian Zhou   +4 more
doaj   +1 more source

Synthetic Strategies for the Construction of Cyclobutane‐Fused Heterocycles

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.
Cyclobutane‐fused heterocycles are important motifs commonly present in bioactive compounds, recognized for their rigid 3D structures that confer unique properties. However, synthesizing these compounds remains challenging. This review discusses current methods for their synthesis, such as photochemical, metal‐catalyzed, and Lewis acid‐mediated [2 + 2]
Michela Vargiu   +2 more
wiley   +1 more source

Thermal decomposition of arenediazonium tosylates with iron acetylacetonates (III)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2009
The reaction of thermal decomposition of 4-nitrobenzenediazonium tosylate in tetrahydrofuran, dimethylsulfoxide and dimethylformamide medium with iron ace tylacetonates (III) has been studied.
O. A. Guselnikova
doaj  

Aryl–Aryl Coupling on Semiconductor Surfaces

open access: yes, 2018
Prauzner-Bechcicki, Jakub   +2 more
openaire   +2 more sources

Selective N‐Functionalization of Pyrazoles

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek   +2 more
wiley   +1 more source

Modular Synthesis of Di‐ and Triazadibenzoazulenes by a Cross‐Coupling/Cycloisomerization Strategy

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.
Two series of regioisomeric di‐ and triazadibenzoazulenes were prepared from dihalogenated imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines. Imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines are important nitrogen‐containing heterocycles with applications in medicinal and materials chemistry.
Karyna Kulyk   +6 more
wiley   +1 more source

Hybrid Macrocyclic Peptides — Synthetic Strategies to Diversify and Cyclize Peptide Libraries in Phage Display Selections

open access: yesChemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
Hybrid macrocyclic peptides unite genetically encoded peptide libraries with the structural complexity of synthetic small molecules. This Review critically analyzes phage‐compatible cyclization and diversification chemistries, highlights emerging opportunities beyond traditional cysteine‐based approaches, and outlines how future advances may enable the
Titia Rixt Oppewal, Clemens Mayer
wiley   +1 more source

Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis

open access: yesChemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller   +6 more
wiley   +1 more source

Chelation‐Assisted Metal‐Catalyzed Ligation and Cleavage Reactions for Chemical Biology

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
Chelation‐assisted transition metal catalysis has emerged as a promising complement to bioorthogonal click chemistry for studying biological processes. By pre‐organizing catalytic metal centers, designed coordinating substrates enhance reactivity and biocompatibility, enabling site‐selective ligation and decaging reactions in complex biological media ...
Emilie Plantiveau   +3 more
wiley   +1 more source

Visible‐Light Cobalt‐Catalyzed Synthesis of Aroyl Amides From Arylazo Sulfones

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 20, 16 October 2026.
Blue Light and Cobalt Catalysis for Synthesis! A versatile strategy that combines photoactive arylazo sulfones as substrates and Co2(CO)8 as a catalyst for the preparation of aromatic amides is presented herein. A versatile strategy leveraging the peculiar reactivity of arylazo sulfones as substrates bearing dyedauxiliary groups in arylation processes,
Komal Jaiswal   +4 more
wiley   +1 more source

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