Organocatalyzed, Visible-Light Photoredox-Mediated, One-Pot Minisci Reaction Using Carboxylic Acids via <i>N</i>-(Acyloxy)phthalimides
作者:Trevor C. Sherwood、Ning Li、Aliza N. Yazdani、T. G. Murali Dhar
DOI:10.1021/acs.joc.8b00205
日期:2018.3.2
one-pot Minisci reaction has been developed using visible light, an organic photocatalyst, and carboxylic acids as radical precursors via the intermediacy of in situ-generated N-(acyloxy)phthalimides. The conditions employed are mild, demonstrate a high degree of functional group tolerance, and do not require a large excess of the carboxylic acid reactant. As a result, this reaction can be applied to
Visible-Light-Mediated C–H Alkylation of Pyridine Derivatives
作者:Fatima Rammal、Di Gao、Sondes Boujnah、Annie−Claude Gaumont、Aqeel A. Hussein、Sami Lakhdar
DOI:10.1021/acs.orglett.0c02863
日期:2020.10.2
We report herein a visible-light-mediated C–H alkylation of pyridine derivatives that proceeds by simple combination of a large variety of N-alkoxypyridinium ions with alkanes in the presence of 2 mol % of fac-Ir(ppy)3 under blue illumination. The mild reaction conditions together with the high group functional tolerance make of this process a useful synthetic platform for the construction of structurally
The direct visible light-mediated C–Halkylation of heteroarenes using aliphatic carboxylic acids is reported. This mild method proceeds at low catalyst loadings (0.5 mol %) and has a high functional group tolerance and a broad substrate scope. Notably, functionalization of (iso)quinoline, pyridine, phthalazine, benzothiazole, and other heterocyclic derivatives with both cyclic and acyclic primary
Green synthesis of silver nanoparticles using green alga (<i>Chlorella vulgaris</i>) and its application for synthesis of quinolines derivatives
作者:Akhil Mahajan、Anju Arya、Tejpal Singh Chundawat
DOI:10.1080/00397911.2019.1610776
日期:2019.8.3
Abstract Nanoparticles have been used century ago but have regained their importance in recent years being simple, ecofriendly, pollutant free, nontoxic, low-cost approach, and due good atom economy. In this report, we have demonstrated the synthesis of silver nanoparticles using green algae (Chlorella vulgaris) which in turn was used for synthesis of biologically important quinolines. Algal extract
Organocatalytic Synthesis of Methylene-Bridged <i>N</i>-Heterobiaryls
作者:David E. Stephens、Vu T. Nguyen、Bhuwan Chhetri、Emily R. Clark、Hadi D. Arman、Oleg V. Larionov
DOI:10.1021/acs.orglett.6b02719
日期:2016.11.18
N-heterobiaryls directly from the corresponding N-heterocycles in a reaction with methylmagnesium chloride in the presence of catalytic amounts of N,N,N′,N′-tetramethylethylenediamine under thermal and microwave conditions is reported. The split-and-merge methylenation of 2,2′-N-heterobiaryls and the direct ortho-alkylation of quinoline and isoquinoline with Grignardreagents have also been developed