Synthesis of 2-Substituted Quinolines from 2-Aminostyryl Ketones Using Iodide as a Catalyst
作者:So Young Lee、Jiye Jeon、Cheol-Hong Cheon
DOI:10.1021/acs.joc.8b00552
日期:2018.5.4
A new protocol for the synthesis of 2-substituted quinolinesfrom 2-aminostyryl ketones has been developed using iodide as a nucleophilic catalyst. Conjugate addition of iodide to 2-aminostyryl ketones yielded the corresponding β-iodoketones, which could have a conformation where the amino and carbonyl groups are proximal through free rotation about the Cα–Cβ single bond. Subsequent condensation between
On-Water Synthesis of 2-Substituted Quinolines from 2-Aminochalcones Using Benzylamine as the Nucleophilic Catalyst
作者:So Young Lee、Cheol-Hong Cheon
DOI:10.1021/acs.joc.8b01675
日期:2018.11.2
On-water synthesis of 2-substituted quinolines from 2-aminochalcone derivatives was developed using benzylamine as the nucleophilic catalyst. Various 2-aminochalcones could be applied to this protocol, and the desired 2-substituted quinoline products were isolated in excellent yields by simple filtration. Furthermore, we elucidated the role of benzylamine in this transformation and provided the detailed
Montmorillonite Clay-Promoted, Solvent-Free Cross-Aldol Condensations under Focused Microwave Irradiation
作者:Damiano Rocchi、Juan González、J. Menéndez
DOI:10.3390/molecules19067317
日期:——
An environmentallybenign, clean and general protocol was developed for the synthesis of aryl and heteroaryl trans-chalcones. This method involved solvent-free reaction conditions undermicrowaveirradiation in the presence of a clay-based catalyst, and afforded the target compounds in good yields and short reaction times. Furthermore, the same conditions allowed the synthesis of symmetrical, diarylmethylene-α
Three-Component Synthesis of a Library of <i>m</i>-Terphenyl Derivatives with Embedded β-Aminoester Moieties
作者:Damiano Rocchi、Juan F. González、Jorge Gómez-Carpintero、Víctor González-Ruiz、M. Antonia Martín、Vellaisamy Sridharan、J. Carlos Menéndez
DOI:10.1021/acscombsci.8b00137
日期:2018.12.10
allowed the construction of a large library of highly substituted dihydro-m-terphenyl derivatives containing β-alkylamino- or β-arylamino ester moieties. This process generates three new bonds and one ring and proceeds in high atom economy, having two molecules of water as the only side product. Another domino process, in which the original MCR was telescoped with a subsequent aza Michael/retro-aza Michael
烷基-或芳基胺之间的三组分反应,β酮酯和查耳酮在回流的含Ce(IV)铵的催化量的乙醇允许高度取代的二氢的大型文库的构建米含β -烷基氨基-三联苯衍生物-或β-芳基氨基酯部分。该过程产生三个新的键和一个环,并以高原子经济性进行,只有两个分子的水是唯一的副产物。另一个多米诺骨牌工艺,其中原始MCR用随后的aza Michael / retro-aza Michael序列进行伸缩,可以一锅制备带有N的化合物库-未取代的β-氨基酯片段。最后,为了扩展这些文库的结构多样性,我们还研究了在二氯二氰基醌存在下我们化合物中心环的芳构化。该反应序列不影响属于氨基组分的立体异构中心的完整性。
One-Pot Synthesis of Functionalized Carbazoles via a CAN-Catalyzed Multicomponent Process Comprising a C–H Activation Step
作者:Juan F. González、Damiano Rocchi、Tomás Tejero、Pedro Merino、J. Carlos Menéndez
DOI:10.1021/acs.joc.7b01199
日期:2017.7.21
a double annulation process that generates two C–C and two C–N bonds, with water as the only side product. Mechanistically, this transformation has some unusual features that include an intramolecular coupled hydrogenation-dehydrogenation process, the functionalization of a C–H group by direct attack onto a nitrogen function and a CAN-catalyzed reduction via hydride transfer from ethanol. The mechanisms