Several quinolines were synthesized and evaluated in vitro against several parasites (Trypanosoma brucei, T. cruzi, Leishmania infantum, L. amazonensis, Plasmodium falciparum). Then, they were evaluated in vitro (at 10 muM), against HTLV-1 transformed cells. A few of them displayed interesting activities, comparable to the reference drugs. (C) 2004 Elsevier Ltd. All rights reserved.
azaheterocycle N-oxides with alkenes catalyzed by iodine under metal- and external oxidant-free reaction conditions has been developed. A variety of (E)-2-styrylazaheterocycles have been produced in moderate to excellent yields. The mechanistic exploration indicated that the N-oxide group played dual roles as both the directing group and an internal oxidant in this catalytic cycle.
Lewis-Acid-Catalyzed Benzylic Reactions of 2-Methylazaarenes with Aldehydes
作者:Dan Mao、Gang Hong、Shengying Wu、Xin Liu、Jianjun Yu、Limin Wang
DOI:10.1002/ejoc.201400073
日期:2014.5
Lewis-acid-catalyzedbenzylicreactions of 2-methylazaarenes with aldehydes have been investigated. Series of azaarene derivatives were afforded by this reaction. 2-(Pyridin-2-yl)ethanols with common substituents were formed through the LiNTf2-promoted aldol reaction for the first time. 2-Alkenylpyridines, exclusively in the form of the E isomers, were synthesized in the presence of LiNTf2 cooperated
已经研究了路易斯酸催化的 2-甲基氮杂芳烃与醛的苄基反应。该反应得到一系列氮杂芳烃衍生物。首次通过LiNTf2促进的羟醛反应形成了具有常见取代基的2-(Pyridin-2-yl)乙醇。在 LiNTf2 与 H2NTf 协同作用下,合成了仅以 E 异构体形式存在的 2-烯基吡啶。在La(Pfb)3催化下,2-甲基喹啉与醛类在空气中反应,以高收率得到2-烯基喹啉。
Iron-catalyzed C(sp<sup>3</sup>)–H functionalization of methyl azaarenes: a green approach to azaarene-substituted α- or β-hydroxy carboxylic derivatives and 2-alkenylazaarenes
作者:Danwei Pi、Kun Jiang、Haifeng Zhou、Yuebo Sui、Yasuhiro Uozumi、Kun Zou
DOI:10.1039/c4ra10939b
日期:——
An iron-catalyzed C(sp3)–H functionalization of methyl azaarenes with carbonyls to access the title compounds have been described.
使用铁催化的C(sp3)-H官能团化方法,将甲基氮杂芳烃与羰基化合物反应,合成了目标化合物。
Nickel(II)‐Catalyzed Selective
<i>(E)</i>
‐Olefination of Methyl Heteroarenes Using Benzyl Alcohols via Acceptorless Dehydrogenative Coupling Reaction
作者:Gunasekaran Balamurugan、Rengan Ramesh
DOI:10.1002/cctc.202101455
日期:2022.1.21
characterized with FT-IR, NMR, HRMS and single crystal X-ray method. The new complexes were tuned as effective homogeneous catalysts for synthesis of selective (E)-olefins from the reaction of methyl heteroarenes and benzyl alcohols via greener ADC methodology. The earth abundant nickel complexes performed well with 4 mol% of catalyst loading at 110 °C for 35 h, resulting in good to excellent yields (40–93 %)
α-olefination of methyl-substituted N-heteroarenes with primary alcohols. The catalytic dehydrogenative coupling enables a series of functionalized E-olefinated N-heteroaromatics with excellent selectivity (>99%). Initial mechanistic studies including deuterium-labeling experiments provide evidence for the participation of the benzylic C-H/D bond of alcohols.