Results 51 to 60 of about 4,376 (210)

Ligand-Free Copper-Catalyzed Arylation of Amidines

open access: yes, 2016
Copper-catalyzed cross-coupling reactions of amidine salts were utilized to synthesize monoarylated amidines in moderate to high yields with ligand-free conditions.
Corey Garvin (2226562)   +2 more
core   +1 more source

Exclusive Hydroformylation of Terminal Olefins: A Phosphorus‐Free Ruthenium System for the Selective Functionalization of Complex Mixtures

open access: yesAngewandte Chemie, Volume 138, Issue 39, 21 September 2026.
Development of a phosphorus‐free Ru/DBU catalyst enabling highly chemo‐ and regioselective hydroformylation of terminal olefins, sparing internal double bonds. Optimization of reaction parameters, ligand effects, and substrate scope including industrial feedstocks was realized.
Mohamed Niyaz Vellala Syed Ali   +6 more
wiley   +2 more sources

1,3-Dipolar Cycloaddition (Part II): Three-Component Cu(I) Catalysed Click Reactions [PDF]

open access: yesKemija u Industriji, 2015
The Cu(I) catalysed reaction of sulfonyl or phosphoryl azide and terminal alkyne obtains a ketenimine intermediate that reacts with nucleophiles like water, alcohols, amines, imines, pyrroles or indoles producing corresponding amides, imidates, amidines ...
Krstulović L.   +4 more
doaj   +1 more source

The Expanding Role of Diazirines in Synthetic Methodology

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 38, 13 October 2026.
Beyond their established role in photoaffinity labeling, diazirines have emerged as versatile reagents in synthetic chemistry. This review highlights their dual reactivity as carbene and nitrogen‐transfer precursors, showcasing mechanistic insights and diverse applications in cyclopropanations, cycloadditions, skeletal editing, amination, heterocycle ...
Viktor Savic   +3 more
wiley   +1 more source

Activation of carbon dioxide by bicyclic amidines

open access: yes, 2004
Activation of the carbon dioxide molecule was achieved using bicyclic amidines (DBU, PMDBD, and DBN). The solution reaction of CO2 with amidines yielded the corresponding zwitterionic complexes through the formation of a N-CO2 bond.
RODRIGUES-FILHO, Ubirajara P.   +6 more
core   +1 more source

Au(I) Complex With an Abnormal Carbene Ligand Shows Anti‐Kasha Dual Photoluminescence Emission

open access: yesAngewandte Chemie, Volume 138, Issue 38, 14 September 2026.
Incorporation of an abnormal N‐heterocyclic carbene into a heteroleptic linear Au(I) complex induces anti‐Kasha dual emission responsive to biologically relevant phenyl sulfate. ABSTRACT We report the first photoactive linear Au(I) complex with an abnormal N‐heterocyclic carbene (aNHC) ligand, Au(aIm)(Cz).
Natesan Mannangatti Rajendran   +5 more
wiley   +2 more sources

Formamidines with antinociceptive and antiinflammatory activities [PDF]

open access: yes, 1991
Pursuing our investigations on 7-amino-2,3-polymethyleneindole derivatives, a set of 7-(dimethylaminomethylene)-amino-2,3-polymethyleneindoles, together with some other aryl or cycloalkyl substituted formamidines, were prepared and tested for analgesic ...
Satta, Margherita   +6 more
core  

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, Volume 309, Issue 10, Page 2790-2837, October 2026.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Three-Component Domino Acylation/Trifluoromethylation of Bicyclic Amidines

open access: yes, 2023
We herein describe a three-component reaction involving bicyclic amidines such as DBN/DBU, acyl fluorides, and TMSCF3 for access to a novel class of N-acyl trifluoromethylated bicyclic aminals.
Ziwei Luo   +7 more
core   +1 more source

The Synthesis of Dicationic Extended Bis-Benzimidazoles

open access: yesMolecules, 2004
The synthesis of extended dicationic bis-benzimidazoles starting from trans-1,2-bis(4-cyanophenyl)ethene and trans-1,2-bis(4-cyanophenyl)cyclopropane is reported. The target diamidines show significant in vitro activity against B. subtilis.
David W. Boykin   +2 more
doaj   +1 more source

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