2055-52-9Relevant academic research and scientific papers
The azide-alkyne cycloaddition catalysed by transition metal oxide nanoparticles
Molteni, Giorgio,Ferretti, Anna M.,Trioni, Mario Italo,Cargnoni, Fausto,Ponti, Alessandro
, p. 18049 - 18061 (2019)
Colloidal nanoparticles of Earth-abundant, first-row transition metal oxides and sulfide, namely magnetite (Fe3O4), manganese and cobalt ferrite, (MnFe2O4, CoFe2O4), manganese(ii) oxide (Mn
Unveiling Potent Photooxidation Behavior of Catalytic Photoreductants
Targos, Karina,Williams, Oliver P.,Wickens, Zachary K.
supporting information, p. 4125 - 4132 (2021/04/07)
We describe a photocatalytic system that reveals latent photooxidant behavior from one of the most reducing conventional photoredox catalysts, N-phenylphenothiazine (PTH). This aerobic photochemical reaction engages difficult to oxidize feedstocks, such as benzene, in C(sp2)-N coupling reactions through direct oxidation. Mechanistic studies are consistent with activation of PTH via photooxidation and with Lewis acid cocatalysts scavenging inhibitors inextricably formed in this process.
Design, synthesis and antibacterial evaluation of novel 15-membered 11a-azahomoclarithromycin derivatives with the 1, 2, 3-triazole side chain
Qin, Yinhui,Teng, Yuetai,Ma, Ruixin,Bi, Fangchao,Liu, Zhiyang,Zhang, Panpan,Ma, Shutao
, p. 321 - 339 (2019/07/18)
Macrolides are widely prescribed in clinic to treat various respiratory tract infections. However, due to their inappropriate use, the prevalence of macrolide-resistant strains among clinical isolates has become a concern for public health. Therefore, nov
Hyperbranched polyethylenimine-supported copper(II) ions as a macroliganted homogenous catalyst for strict click reactions of azides and alkynes in water
Ben El Ayouchia, Hicham,ElMouli,Bahsis, Lahoucine,Anane,Laamari, Rachid,Gómez-García, Carlos J.,Julve, Miguel,Stiriba, Salah-Eddine
, (2019/08/12)
Loading hyperbranched polyethylenimine (PEI) with copper(II) ions leads to the formation of a new water-soluble metallodendritic polymer Cu(II)-PEI that has been found to effectively catalyze the clickable azide-alkyne [3 + 2] cycloaddition reactions in w
Catalytic Intermolecular Cross-Couplings of Azides and LUMO-Activated Unsaturated Acyl Azoliums
Li, Wenjun,Ajitha, Manjaly J.,Lang, Ming,Huang, Kuo-Wei,Wang, Jian
, p. 2139 - 2144 (2017/08/14)
An example for the catalytic synthesis of densely functionalized 1,2,3-triazoles through a LUMO activation mode has been developed. The protocol is enabled by intermolecular cross-coupling reactions of azides with in situ-generated α,β-unsaturated acyl az
Copper Acetate Catalyzed Regio-selective Synthesis of Substituted 1,2,3-Triazoles: A Versatile Azide–Alk-ene Cycloaddition/Oxidation Approach
Rohilla, Sandeep,Patel, Shyam Sunder,Jain, Nidhi
, p. 847 - 854 (2017/01/18)
A copper acetate catalyzed oxidative cycloaddition reaction of benzyl and aryl azides with terminal and internal olefins that contain electron-withdrawing groups (COOR, CONH2, CN, CHO, COR) has been developed. The reaction employs air as the oxidant and does not require any base or additives to afford 1,4-disubstituted and 1,4,5-trisubstituted 1,2,3-triazoles in good to excellent yields with high regioselectivity.
Pressure-accelerated azide-alkyne cycloaddition: Micro capillary versus autoclave reactor performance
Borukhova, Svetlana,Seeger, Andreas D.,Nol, Timothy,Wang, Qi,Busch, Markus,Hessel, Volker
, p. 504 - 512 (2015/03/04)
Pressure effects on regioselectivity and yield of cycloaddition reactions have been shown to exist. Nevertheless, high pressure synthetic applications with subsequent benefits in the production of natural products are limited by the general availability o
Direct access to 1,4-disubstituted 1,2,3-triazoles through organocatalytic 1,3-dipolar cycloaddition reaction of α,β-unsaturated esters with azides
Li, Wenjun,Zhou, Xiao,Luan, Yepeng,Wang, Jian
, p. 88816 - 88820 (2015/11/09)
DBU-catalyzed organocatalytic 1,3-dipolar cycloaddition reactions of α,β-unsaturated esters with azides have been developed. This strategy generates 1,4-disubstituted 1,2,3-triazoles in high yields with high regioselectivities. It is demonstrated that some of these products can be transformed into important pharmaceutical agents.
3-nitro- and 3-bromo-3-nitroacrylates in reactions with phenyl azide
Berestovitskaya,Anisimova,Kataeva,Makarova,Berkova
, p. 1567 - 1575 (2008/03/14)
1,3-Dipolar cycloaddition of alkyl 3-nitro-and 3-bromo-3-nitroacrylates to phenyl azide gives regioisomeric alkyl 5(4)-nitro-1-phenyl-4,5-dihydro-1H-1,2,3- triazole-4(5)-carboxylates, the corresponding triazoles both with and without nitro group, and alky
Arylazide cycloaddition to methyl propiolate: DFT-based quantitative prediction of regioselectivity
Molteni, Giorgio,Ponti, Alessandro
, p. 2770 - 2774 (2007/10/03)
Several 1-(4-substituted)-phenyl-4- or 5-methoxycarbonyl-1,2,3-triazoles have been synthesized by 1,3-dipolar cycloaddition of the corresponding arylazides to methyl propiolate in carbon tetrachloride. The regioselectivity of these reactions cannot be rat
