One‐Pot Synthesis of Quinoline Derivatives Directly from Terminal Alkynes
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Sequential Ruthenium(II) and Acid Catalysis
作者:Min Zhang、Thierry Roisnel、Pierre H. Dixneuf
DOI:10.1002/adsc.201000278
日期:2010.10.9
A convenient one-potsynthesis of 2,3-disubstituted, 2,3,6-trisubstituted, and 2,3,6,7-tetrasubstituted quinoline analoguesfrom terminal alkynes via sequential ruthenium(II) and para-toluenesulfonic acid (p-TSA) co-catalyzed reactions is described. The catalytic process is shown to take place first via intermediate formation of an allyl ketone and then addition of an aniline derivative to the allyl
Facile synthesis of libraries of functionalized cyclopropanes and oxiranes using ionic liquids – A new approach to the classical Corey-Chaykovsky reaction
作者:Shruti S. Malunavar、Suraj M. Sutar、Pavankumar Prabhala、Hemantkumar M. Savanur、Rajesh G. Kalkhambkar、Gopalakrishnan Aridoss、Kenneth K. Laali
DOI:10.1016/j.tetlet.2021.153339
日期:2021.9
[PAIM][NTf]/BMIM-ILs as a base/solvent in the Corey-Chaykovsky reaction is demonstrated by the facile synthesis of libraries of functionalized cyclopropanes from enones and oxiranes from aldehydes and ketones, at room temperature in respectable isolated yields. To demonstrate their application, the synthesized epoxides were employed as substrates for the synthesis of a library of 2,3-disubstituted quinolines, using
Facile one-pot synthesis of polysubstituted quinolines under solvent-free conditions using sulfamic acid as a reusable catalyst
作者:Min Zhang、Biao Xiong、Wei Yang、D. N. T. Kumar、Yu-Qiang Ding
DOI:10.1007/s00706-011-0590-7
日期:2012.3
one-pot synthesis of polysubstitutedquinoline derivatives has been demonstrated by using sulfamic acid as a reusablecatalystundersolvent-freeconditions. The synthetic method provides the basis and advantages of a simple experimental procedure and easy recovery and reuse of catalyst, which makes it a highly practical and environmentally benign pathway for the synthesis of polysubstituted quinolines
A new catalytic amination of aromatic olefins with anilines is presented. In a domino reaction, substituted quinoline derivatives are obtained in the presence of cationic rhodium complexes, such as [Rh(cod)2]BF4, and PPh3. Ethylbenzene is formed as a by-product in this new oxidative reaction. The first transition metal catalyzed anti-Markovnikov hydroamination of styrene with anilines occurs as a side
A visible‐light‐driven sequential photoredox catalysis to allow N‐aryl α‐amino acids to experience efficient cascade aerobic decarboxylative Povarov and oxidative dehydrogenation (ODH) reactions is described. With a dicyanopyrazine‐derived chromophore (DPZ) as a photoredoxcatalyst in both transformations, two series of valuable azaarenes, i. e., 4‐amino tetrahydroquinolines (THQs) and quinolines,