Results 101 to 110 of about 80,033 (290)
Multisite-Sequential Cyclization To Construct 1,2,4-Triazole-Based N‑Fused Heterocyclics
, 2023 A feasible protocol that uses atomic groups (KSCN, KSeCN, and NH2CN), o-bromobenzoyl hydrazides, and formyls as reaction factors to synthesize N-fused 1,2,4-triazole with benzothiazides, benzoselenazinones, and quinazolinones was proposed.
Yao Li (154923) +10 more
core +1 more source
Angewandte Chemie, EarlyView.Die Click‐Chemie hat sich von dem Aufbau kovalenter Bindungen hin zum Spalten von Bindungen weiterentwickelt. Hier wird über einen Kaskaden‐Aufbau berichtet, der diese Verfahren kombiniert, um multifunktionale biomolekulare Gerüste in einer modularen Ein‐Topf‐Reaktion aufzubauen.
Markus Staudt +9 more
wiley +1 more source
1,2,4-Oxadiazoles from cycloreversions of oxadiazabicyclo[3.2.0]heptenes: 1-azetines as thiocyanate equivalents [PDF]
, 2013 1,3-Dipolar cycloaddition of nitrile oxides to 4-aryl-2-alkylthio-1-azetines gave a series of oxadiazabicyclo[3.2.0]heptenes as single diastereoisomers. Heating these cycloadducts in toluene resulted in an overall [2+2]-cycloreversion to give 5-alkylthio-
Khan, Musharraf +5 more
core +1 more source
9-Ethyl-6-methyl-7H-1,2,4-triazolo[4,3-b][1,2,4]triazepin-8(9H)-one
IUCrData, 2016 In the title compound, C8H11N5O, the triazepine ring displays a boat conformation. Its mean plane is inclined to the triazole ring by 22.10 (9)°. In the crystal, molecules are linked by C—H...O hydrogen bonds to form chains parallel to the b-axis ...
Youness El Bakri +4 more
doaj +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
core +2 more sources
Angewandte Chemie International Edition, Volume 65, Issue 44, 26 October 2026.Modular carbohydrate‐directed labeling probes (CDLPs) convert weak carbohydrate–protein interactions into durable covalent tags in live cells without the need for multivalency or UV irradiation. Ligand binding triggers proximity‐enabled, glycan‐releasing acyl transfer to install a click handle for protein tagging and chemoproteomic profiling.
Matthew C. Russolillo +7 more
wiley +1 more source
, 2017 Dramatically increased occurrence of both superficial and invasive fungal infections has been observed. Candida albicans appear to be the main etiological agent of invasive fungal infections. The anti-C.
Fares Kaed Alanazi (12847797) +2 more
core +1 more source
Syntheses, Antibacterial and Antifungal Activities of Substituted-Thiazolo-1,3,4-Thiadiazoles, 1,3,4-Oxadiazoles and 1,2,4-Thiazoles [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 1998 Starting from readily available 2-substituted-4-methylthiazole-5-carboxylic acid hydrazide (1), The title compounds were prepared. The reaction of compound 1 (R=CH3) with formic acid yielded 1-(formyl)-2-(2,4-dimethylthiazole-5-carboxyl) hydrazine (2 ...
Abbas Shafiee +2 more
doaj
, 2016 The structure, tautomerism, and vibrational spectra of the highly explosive 3-amino-5-nitro-1,2,4-triazole (ANTA) molecule were studied by ab initio molecular orbital calculations at the Hartree−Fock and second-order (MP2) and fourth-order (MP4) Möller ...
Carl M. Bennett (3053949) +2 more
core +1 more source
Angewandte Chemie International Edition, EarlyView.We introduce the Aza‐Büchner–Curtius–Schlotterbeck (ABCS) reaction: A mild, catalyst‐free method for homologating aryl imines. Diverging from the traditional BCS mechanism, the diazo intermediate undergoes selective C─C insertion to form an all‐carbon quaternary center.
Simon O. Angerer +6 more
wiley +1 more source