Results 91 to 100 of about 18,651 (251)
Regioselective Formation of 2,5-Disubstituted Oxazoles Via Copper(I)-Catalyzed Cycloaddition of Acyl Azides and 1-Alkynes [PDF]
, 2011 The reaction of 1-alkynes with acylazides in the presence of [Tpm*,BrCu(NCMe)]BF4 (Tpm*,Br = tris(3,5-dimethyl-4-bromopyrazolyl)methane) as the catalyst provides 2,5-oxazoles in moderate to high yields.
Cano Rico, Israel +3 more
core +1 more source
Covalent Organic Frameworks for Photocatalysis
Advanced Materials, Volume 37, Issue 52, December 29, 2025.This review provides an overview of recent advances in covalent organic frameworks (COFs) for photocatalysis, focusing on sustainable energy applications like water splitting, hydrogen peroxide generation, and CO2 and N2 reduction. It discusses design principles, structure‐function relationships, challenges in COF photocatalysis, and strategies to ...
Bikash Mishra +6 more
wiley +1 more source
Synthetic utility and reactivity of N-alkynylazoles [PDF]
, 2015 textThe chemistry of N-alkynylazoles is a newly emerging area of chemistry with particular interest in heterocycle synthesis. Synthetic preparations of this class of molecule have shown an increasing presence in literature, however, the synthetic ...
Gilbreath, Bradford Lynd
core
Angewandte Chemie, Volume 137, Issue 48, November 24, 2025.Der Einbau verschiedener Chalkogenatome (O, S, Se oder Te) in häufig verwendete Isochalkogenharnstoff‐Organokatalysatoren ermöglicht die Feinabstimmung ihrer Nucleophilie und Basizität. Kinetische und thermodynamische Deskriptoren für die molekularen Eigenschaften der Katalysatoren werden als Werkzeuge zur Vorhersage ihrer Effizienz eingeführt und in ...
Lotte Stockhammer +8 more
wiley +1 more source
Palladium-catalyzed difluoromethylation of heteroaryl chlorides, bromides and iodides. [PDF]
, 2017 A palladium-catalyzed difluoromethylation of a series of heteroaryl chlorides, bromides and iodides under mild conditions is described. A wide range of heteroaryl halides such as pyridyl, pyrimidyl, pyrazyl, funanyl, thienyl, pyazolyl, imidazolyl ...
Gu, Yang +4 more
core +1 more source
ChemistryEurope, Volume 3, Issue 6, November 11, 2025.Novel amido‐enaminone threads efficiently template the formation of hydrogen‐bonded [2]rotaxanes and enable diverse postsynthetic modifications. Benzyl groups promote diastereoselective cyclizations to interlocked lactams while the enaminone motif allows stopper exchange while preserving the mechanical bond.
Syed S. Razi +4 more
wiley +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2019 In the title compound, C17H14N4O3, the indazole unit is planar to within 0.0171 (10) Å and makes dihedral angles of 6.50 (6) and 6.79 (4)°, respectively, with the nitro and pendant phenyl groups.
Mohammed Boulhaoua +6 more
doaj +1 more source
Insights into the Electronic Structure of CuII Bound to an Imidazole Analogue of Westiellamide. [PDF]
, 2014 Three synthetic analogues of westiallamide, HL, have previously been synthesized (HL) that have a common backbone (derived from l-valine) with HL but differ in their heterocyclic rings (imidazole, oxazole, thiazole, and oxazoline).
Comba, Peter +6 more
core +1 more source
ChemistryEurope, Volume 3, Issue 6, November 11, 2025.The nitrone moiety's versatility in covalent organic polymer (COP) materials is shown by its ability to form either nitrone‐linked or oxime O‐ether‐linked COPs from the same building blocks, simply by changing reaction conditions. Additionally, its 1,3‐dipolar cycloaddition reactivity enabled the synthesis of a functionalized isoxazolidine‐linked ...
Beatriz de Santos +6 more
wiley +1 more source
Thiazole and Oxazole Alkaloids: Isolation and Synthesis
Marine Drugs, 2010 Thiazoles, oxazole and their corresponding reduced derivatives, thiazolines and oxazolines, are found in marine sources exhibiting significant biological activities.
Gloria Serra, Danilo Davyt
doaj +1 more source