Results 61 to 70 of about 41,109 (281)
Molecules, 2016 We provide a comprehensive account of the 1,3-dipolar cycloaddition reactions of azomethine ylides with carbonyl dipolarophiles. Many different azomethine ylides have been studied, including stabilized and non-stabilized ylides.
A. G. Meyer, J. H. Ryan
semanticscholar +1 more source
Isolation of bis(copper) key intermediates in Cu-catalyzed azide-alkyne "click reaction". [PDF]
, 2015 The copper-catalyzed 1,3-dipolar cycloaddition of an azide to a terminal alkyne (CuAAC) is one of the most popular chemical transformations, with applications ranging from material to life sciences.
Bertrand, Guy +3 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2008 Copper-catalyzed, thermal or microwave promoted 1,3-dipolar cycloaddition (Click Reaction) of 2-propynyl and 3-butynyl 2,3,4-tri-O-acetyl-6-azido-6-deoxy-glycopyranosides in the D-gluco, D-galacto and D-manno series afford the corresponding dimeric ...
Nikolas Pietrzik +2 more
doaj +1 more source
Synthesis of New bis 1- and 5-Substituted 1H-Tetrazoles via Huisgen-Type 1,3-Dipolar Cycloadditions
Proceedings, 2019 The synthesis and characterization of one symmetrical bis-1-substituted-1H-tetrazole (69%) via a Huisgen-type 1,3-dipolar cycloaddition, as well as, one symmetrical aza-linked bis-5-substituted-1H-tetrazole (57%) via a classic Huisgen 1,3-dipolar ...
Roberto E. Blanco-Carapia +8 more
doaj +1 more source
Reaction profiles for quantum chemistry-computed [3 + 2] cycloaddition reactions [PDF]
arXiv, 2022 Bio-orthogonal click chemistry based on [3 + 2] dipolar cycloadditions has had a profound impact on the field of biochemistry and significant effort has been devoted to identify promising new candidate reactions for this purpose. To gauge whether a prospective reaction could be a suitable bio-orthogonal click reaction, information about both on- and ...
arxiv
Ultrasonics Sonochemistry, 2021 In the present study, following a one-pot two-step protocol, we have synthesized novel sulfonamides-isoxazolines hybrids (3a-r) via a highly regioselective 1,3-dipolar cycloaddition. The present methodology capitalized on trichloroisocyanuric acid (TCCA)
Aicha Talha +9 more
doaj
Ultrasound-promoted synthesis of novel fused heterocycles by criss-cross cycloaddition
Journal of Saudi Chemical Society, 2016 This work reports a novel and highly efficient methodology for the synthesis of perhydrotriazolotriazoledithions from two successive 1,3-dipolar cycloaddition under ultrasound irradiation.
Javad Safari +2 more
doaj +1 more source
Cavity Click Chemistry: Cavity-Catalyzed Azide-Alkyne Cycloaddition [PDF]
arXiv, 2023 Click chemistry, which refers to chemical reactions that are fast, selective, and with high product yields, has become a powerful approach in organic synthesis and chemical biology. Due to the cytotoxicity of the transition metals employed in click chemistry reactions, a search for novel metal-free alternatives continues.
arxiv
1,3-Dipolar cycloadditions of fluorinated nitrones with thioketones [PDF]
Journal of Fluorine Chemistry, 2014 AbstractReadily available fluorinated nitrones (IV) and (XIV) are used in 1,3‐dipolar cycloadditions with thioketones affording 1,4,2 oxathiazolidines in a regioselective manner.
Mlostoń, Grzegorz +5 more
openaire +3 more sources
Continuous Flow Technology Enabling Photochemistry
Advanced Synthesis &Catalysis, EarlyView.Abstract The merger of continuous flow technology and modern photochemistry has enabled countless applications showcasing new opportunities for chemical synthesis demonstrating improvements in selectivity, safety, sustainability and scalability. This focused review aims to highlight a selection of recently published case studies from academic and ...
Ruairi Crawford, Marcus Baumann
wiley +1 more source