Results 71 to 80 of about 17,991 (268)

A Synthetic Route Toward Tetrazoles: The Thermolysis of Geminal Diazides

open access: yesChemistry, 2019
A new synthetic route toward the tetrazole core is described, which is based on a general fragmentation pattern that was found in a range of compounds featuring geminal diazido units.
K. Holzschneider   +3 more
semanticscholar   +1 more source

Ir/Ni Metallaphotoredox Catalysis for the C(sp3)─H Bond α‐Arylation and Alkylation of N‐Alkyl N‐Heterocycles

open access: yesChemistry – A European Journal, EarlyView.
Ir/Ni metallaphotoredox system enables the regioselective α‐arylation and alkylation of N‐alkyl heterocycles via C(sp3)─H bond functionalization. This method bypasses traditional Sn2 pathways and offers complementary regioselectivity to transition metal catalysis.
Bin Lv   +2 more
wiley   +1 more source

Photochemical Synthesis of Pyrazolines from Tetrazoles in Flow

open access: yesSynOpen, 2023
Pyrazolines and their pyrazole congeners are important heterocyclic building blocks with numerous applications in the fine chemical industries. However, traditional routes towards these entities are based on multistep syntheses generating substantial ...
Adam Burke   +3 more
doaj   +1 more source

Design of Potent Mannose‐6‐Phosphate Derivatives as Ligands for CI‐M6P/IGF2R Using Fluorescence Polarization Assay

open access: yesChemistry – A European Journal, EarlyView.
We designed and synthesized novel mannose‐6‐phosphate (M6P) derivatives to enhance their binding affinity for the CI‐M6P/IGF2 receptor, which plays a key role in lysosomal targeting. Using a fluorescence polarization assay, we evaluated di‐, tri‐, and penta‐M6P peptides and modified M6P analogs.
Lucie Mrázková   +11 more
wiley   +1 more source

Convergent approach towards ADP‐ribosylated‐peptides via a chemoselective phosphate condensation

open access: yesChemistry – A European Journal, Accepted Article.
The preparation of well‐defined ADP‐ribosylated peptides is essential for studying the functional implications of this post‐translational modification. While methodologies exist for the chemical synthesis of short oligo‐ADPr fragments and mono‐ADP‐ribosylated peptides separately, combining the two distinct chemistries, required to assemble them, has ...
Sven Wijngaarden   +9 more
wiley   +1 more source

The Evolution of Fluorescein into A Potential Theranostic Tool

open access: yesChemistry – A European Journal, EarlyView.
Our study successfully evolved a fluorescent imaging agent into a potent therapeutic compound. By functionalizing fluorescein, we enhanced its fluorescence and adapted it for multicomponent reactions (MCRs). We synthesized over 20 compounds across four diverse scaffolds.
Konstantinos S. Adamis   +8 more
wiley   +1 more source

In Vitro Activities of the Novel Investigational Tetrazoles VT-1161 and VT-1598 Compared to the Triazole Antifungals against Azole-Resistant Strains and Clinical Isolates of Candida albicans

open access: yesAntimicrobial Agents and Chemotherapy, 2019
The fungal Cyp51-specific inhibitors VT-1161 and VT-1598 have emerged as promising new therapies to combat fungal infections, including Candida spp. To evaluate their in vitro activities compared to other azoles, MICs were determined by Clinical and ...
A. Nishimoto   +10 more
semanticscholar   +1 more source

N,N‐Bis(trifluoromethyl)aminoacetonitrile: A Versatile Building Block for the Introduction of the Bis(trifluoromethyl)amino Group

open access: yesChemistry – A European Journal, Accepted Article.
N,N‐Bis(trifluoromethyl)aminoacetonitrile (CF3)2NCH2CN (1) that is accessible via a simple single‐step protocol is establish­ed as building block for the introduction of the (CF3)2N group. The two reaction sites of 1, the methylene unit and the nitrile (cyano) group, provide access to different organic substance classes.
Kristina A. M. Maibom   +14 more
wiley   +1 more source

Functionalized Amide Chlorides: 5-Dimethylamino-1H-Tetrazoles from N,N-Dimethyl-Azidochloromethylenimonium Chloride and Primary amines

open access: yesCHIMIA, 1975
Sodium azide or trimethylsilylazide react with N,N-dimethylphosgenimonium chloride by monosubstitution yielding N,N-dimethyl-azidochloromethylen-imonium chloride which can be isolated.
H.G. Viehe, P. George
doaj   +1 more source

Flash Vacuum Pyrolysis of Azides, Triazoles, and Tetrazoles.

open access: yesChemical Reviews, 2017
Flash vacuum pyrolysis (FVP) of azides is an extremely valuable method of generating nitrenes and studying their thermal rearrangements. The nitrenes can in many cases be isolated in low-temperature matrices and observed spectroscopically. NH and methyl,
C. Wentrup
semanticscholar   +1 more source

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