Results 71 to 80 of about 35,216 (249)
, 2022 The target compounds, 3-(4-chlorophenyl)-5-(thiophene-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothioamide (I) and 3-(4-methoxyphenyl)-5-(thiophene-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothioamide (II) were synthesized and characterized by XRD, FT-IR and UV-Vis ...
Serap Uzun (12190588)
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Efficient Regioselective Iodination of Pyrazole Derivatives Mediated by Cadmium(II) Acetate
ChemistryOpenThe present study focuses on the iodination of pyrazoles mediated by cadmium (II) acetate. The objects of research were compounds with pyrazole rings substituted by N‐propargyl, C, N‐alkyl groups.
Dr. Nina G. Hobosyan +8 more
doaj +1 more source
Two tautomers in the same crystal: 3-(4-fluorophenyl)-1H-pyrazole and 5-(4-fluorophenyl)-1H-pyrazole
Acta Crystallographica Section E, 2014 The title co-crystal, 3-(4-fluorophenyl)-1H-pyrazole–5-(4-fluorophenyl)-1H-pyrazole (1/1), C9H7FN2, crystallizes with four independent molecules (A, B, C and D) in the asymmetric unit exhibiting two tautomeric forms (A and D; B and C) due to N—H proton ...
Thammarse S. Yamuna +4 more
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Fluorogenic Sydnones for Bioorthogonal Labeling of DNA
Chemistry – A European Journal, EarlyView.Conjugates of sydnones with cyanine‐styryl dyes combine bioorthogonal reactivity with fluorogenicity. The reactivity with bicyclo[6.1.0]non‐4‐yne (BCN)‐modified DNA showed second‐order rate constants of up to k2 = 2,300 M−1s−1 and fluorescence turn‐on by one magnitude of order.
Kerstin Müller +1 more
wiley +1 more source
Synthesis of Substituted Triazole-Pyrazole Hybrids using Triazenopyrazoles Precursors [PDF]
A synthesis route to access triazole-pyrazole hybrids via pyrazolotriazenes was developed. Contrary to existing methods, this route allows the facile N-functionalization of the pyrazole before the attachment of the triazole unit via a copper-catalyzed ...
Simone, Graessle +6 more
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Synthesis, coordination chemistry and photophysical properties of naphtho-fused pyrazole ligands [PDF]
, 2019 The synthesis of two p-extended pyrazole ligands is reported, with naphtho[2,1-d]-1H-pyrazole HL1 prepared in a modified Jacobson indazole synthesis from 1-amino-2-methylnaphthalene, and subsequent arylation with 2-bromopyridine giving the chelating ...
Hawes, Chris S.
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Chemistry – A European Journal, EarlyView.Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua +3 more
wiley +1 more source
(E)-1-(3,4-Dimethoxyphenyl)-3-(1,3-diphenyl-1H-pyrazol-4-yl)prop-2-en-1-one
IUCrDataIn the title compound, C26H22N2O3, the dihedral angle between the benzene and pyrazole rings of the chalcone unit is 88.3 (1)°. The pyrazole ring has two attached phenyl rings that form dihedral angles with the pyrazole ring of 22.6 (2) and 40.0 (1)°. In
Jiha Sung
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Chemistry – A European Journal, EarlyView.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
Molecules, 2020 Several anti-inflammatory agents based on pyrazole and imidazopyrazole scaffolds and a large library of substituted catechol PDE4D inhibitors were reported by us in the recent past.
Chiara Brullo +7 more
doaj +1 more source