Results 11 to 20 of about 49,489 (310)
Recent progress in low‐cost noncovalently fused‐ring electron acceptors for organic solar cells
Noncovalently fused‐ring electron acceptors (NFREAs) have attracted much attention because of the advantage of simple structure, facile synthesis, and low cost, which have great potential for commercial applications in organic solar cells. This review presents the recent development of NFREAs for organic solar cells and focuses on the effect of their ...
Qingqing Bai+5 more
wiley +1 more source
Synthesis of β-triazolylenones via metal-free desulfonylative alkylation of N-tosyl-1,2,3-triazoles
Desulfonylative alkylation of N-tosyl-1,2,3-triazoles under metal-free conditions leading to β-triazolylenones is reported here. The present study encompasses the synthesis of triazoles with a new substitution pattern in a single step from cyclic 1,3 ...
Soumyaranjan Pati+3 more
doaj +1 more source
Overview of 1,5-Selective Click Reaction of Azides with Alkynes or Their Synthetic Equivalents
Nowadays, the click reaction of azides with alkynes has evolved rapidly and become one of the most efficient methods to synthesize 1,2,3-triazoles, which are an important class of N-containing heterocycles.
Yaqi Zhao+3 more
doaj +1 more source
Macrocyclic Hamilton receptor-shuttling dynamics in [2]rotaxanes [PDF]
Inherent movement of a macrocycle comprising a multi-site hydrogen bonding Hamilton-type receptor in a series of [2]rotaxanes was investigated by dynamic and VT NMR. In these rotaxanes the varying nature and number of hydrogen-bond motifs and stations on the molecular axles influenced ring dynamics.
arxiv +1 more source
The target for antibacterial action of 1,4-di- and 1,4,5-trisubstituted 1H-1,2,3-triazoles against E. coli ATCC 25922 and S. aureus ATCC 6538 was proposed.
Cyril M. Verbilo+4 more
doaj +1 more source
4,5-Bis(arylethynyl)-1,2,3-triazoles—A New Class of Fluorescent Labels: Synthesis and Applications
Cu-catalyzed 1,3-dipolar cycloaddition of ethyl 2-azidoacetate to iodobuta-1,3-diynes and subsequent Sonogashira cross-coupling were used to synthesize a large series of new triazole-based push–pull chromophores: 4,5-bis(arylethynyl)-1H-1,2,3-triazoles ...
Anastasia I. Govdi+7 more
doaj +1 more source
Hydrothermal liquefaction of sewage sludge; energy considerations and fate of micropollutants during pilot scale processing [PDF]
The beneficial use of sewage sludge for valorization of carbon and nutrients is of increasing interest while micropollutants in sludge are of concern to the environment and human health. This study investigates the hydrothermal liquefaction (HTL) of sewage sludge in a continuous flow pilot scale reactor at conditions expected to reflect future ...
arxiv +1 more source
Click Triazoles for Bioconjugation [PDF]
Click Chemistry is a set of rapid, selective and robust reactions that give near-quantitative yield of the desired product in aqueous solutions. The Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) that forms 1,4-disubstituted triazoles is a prototypical example of click chemistry that features exquisite selectivity and bioorthogonality-that is, non ...
Abubakar S. Jalloh+3 more
openaire +3 more sources
An operationally simple Ag(I)-catalyzed approach for the synthesis of isoquinoline and quinazoline fused 1,2,3-triazoles was developed by a condensation and amination cyclization cascade of amino-NH-1,2,3-triazoles with 2-alkynylbenzaldehydes involving ...
Shuitao Zhang+4 more
doaj +1 more source
Triazole-Directed Pd-Catalyzed C(sp2)–H Oxygenation of Arenes and Alkenes [PDF]
Selective Pd-catalyzed C(sp2)–H oxygenation of 4-substituted 1,2,3-triazoles is described. Unlike previous metal-catalyzed C–H functionalization events, which preferentially occur at the activated heterocyclic C–H bond, the regioselective oxygenation of ...
Aizpurua Iparraguirre, Jesús María+2 more
core +2 more sources