Versatile Barium and Calcium Imidazolium-Dicarboxylate Heterogeneous Catalysts in Quinoline Synthesis
作者:María Albert-Soriano、Paz Trillo、Tatiana Soler、Isidro M. Pastor
DOI:10.1002/ejoc.201700990
日期:2017.11.24
A variety of calcium- and barium-based heterogeneous catalysts have been prepared in a straightforward manner from readily available organic linkers and metal sources. The set of materials constitutes a valuable array of catalysts for organic transformations, opening up their practical use.
Environmentally Friendly Nafion-Mediated Friedländer Quinoline Synthesis under Microwave Irradiation: Application to One-Pot Synthesis of Substituted Quinolinyl Chalcones
作者:Cheng-Chung Wang、Chieh-Kai Chan、Chien-Yu Lai
DOI:10.1055/s-0039-1690088
日期:2020.6
An efficient and eco-friendly synthetic route for Friedländer quinoline synthesis of polysubstituted quinolines is described. This green chemical method starts from various 2-aminobenzophenones and mono- or dicarbonyl synthons and uses reusable Nafion NR50 material as a solid catalyst in ethanol undermicrowaveirradiation. The protocol has a high generality of functional groups and provides the desired
Highly efficient Brønsted acid and Lewis acid catalysis systems for the Friedländer Quinoline synthesis
作者:Xiao-Yu Zhou、Xia Chen、Liang-Guang Wang
DOI:10.1080/00397911.2018.1428346
日期:2018.4.3
ABSTRACT The efficient and green Brønsted acid or Lewis acid catalysis systems for the Friedländersynthesis of 2,3,4-trisubstituted quinolines from the condensation of 2-aminoarylketones and β-ketoesters/ketones had been developed. The results confirmed that 4-toluenesulfonic acid, magnesium chloride, and cupric nitrate were the desired catalyst independently. This protocol had the advantages of mild
Photochemistry of ortho-Azidocinnamoyl Derivatives: Facile and Modular Synthesis of 2-Acylated Indoles and 2-Substituted Quinolines under Solvent Control
The light-promoted potential of ortho -azidocinnamoyl compounds is evaluated for heterocycle synthesis. Depending on the nature of the solvent, 2-acylated indoles were obtained under aprotic conditions, whereas the use of a protic medium led to 2-substituted quinolines. The synthetic significance of this metal-free method is that, by simply changing the solvent, the reaction outcome can be directed
An unexpected one-pot synthesis of multi-substituted quinolines via a cascade reaction of Michael/Staudinger/aza-Wittig/aromatization of ortho-azido-β-nitro-styrenes with various carbonyl compounds
作者:Zhi-Hua Yu、Hu-Fei Zheng、Wei Yuan、Zi-Long Tang、Ai-Dong Zhang、De-Qing Shi
DOI:10.1016/j.tet.2013.07.050
日期:2013.9
Multi-substituted quinolines 3 were unexpectedly prepared from a cascadereaction of ortho-azido-β-nitro-styrenes with various carbonyl compounds. This method takes advantages of mild condition, simple work-up, high yield as well as wide substrate scope, which makes this method powerful for one-potsynthesis of multi-substituted quinolines.