Carcinogenic nitrogen compounds. Part XLIX. Analogues of benzacridines and benzocarbazoles having an α-pyrone ring
作者:N. P. Buu-Hoï、M. Mangane、P. Jacquignon
DOI:10.1039/j39660000050
日期:——
and paraformaldehyde to give chromenoquinolines, which are analogues of the carcinogenicbenzacridines and dibenzacridines. Isochromenoindoles, analogous to mono- and di-benzocarbazoles, were prepared by indolisation of aryl- and quinolylhydrazones of isochroman-1,4-dione. The electron-impact fragmentation of these compounds is discussed.
Substrate‐Induced Synthesis of Coumarin‐Fused Quinolinones from Anilines, 4‐Hydroxycoumarins and DMSO under Air
作者:Xu Shi、Qingqing Zhang、Anan Wang、Tao‐Shan Jiang
DOI:10.1002/adsc.202200284
日期:2022.6.21
Substrate-induced synthesis of 6H-Chromeno[4,3-b]quinolin-6-ones has been developed directly from anilines, 4-hydroxycoumarins and DMSO under air without any catalysts and additives in one pot. This protocol highlights dual roles of 4-hydroxycoumarins which were not only used as reactants but also activated DMSO to provide one-carbon unit in the desired products.
6 H - Chromeno[4,3 - b ]quinolin-6-ones 的底物诱导合成直接由苯胺、4-羟基香豆素和 DMSO 在空气中开发,无需任何催化剂和添加剂。该协议强调了 4-羟基香豆素的双重作用,它们不仅用作反应物,而且还激活 DMSO 以在所需产品中提供单碳单元。
Preparation of Chromeno[<i>b</i>]quinoline Derivatives and Their Application for Lipid Droplets Markers
作者:Ming-Sen Zhu、Xiao-Qing Zhang、Ya-Nan Wang、Yu-Jie Xu、Ru Sun、Jian-Feng Ge
DOI:10.1021/acs.joc.2c00667
日期:2022.8.5
Functional dyes with a chromeno[b]quinoline skeleton (3a–d) were synthesized by one-step cyclization between coumarin derivatives and aromatic amines under the promotion of anhydrous aluminum chloride in 41.2–45.8% yields. Their maximum absorption and emission wavelengths locate at 358–396 and 420–603 nm with large Stokes shifts (168–231 nm), and their intramolecular charge transfer has been corroborated
在无水氯化铝的促进下,香豆素衍生物与芳香胺一步环合合成了具有色烯[ b ]喹啉骨架的功能染料( 3a - d ),收率41.2-45.8%。它们的最大吸收和发射波长位于 358-396 和 420-603 nm,具有大的斯托克斯位移(168-231 nm),并且它们的分子内电荷转移已通过密度泛函理论计算得到证实。细胞实验证明,探针3a - c具有靶向脂滴的能力。
Copper-Catalyzed Cyclization for Access to 6<i>H</i>-Chromeno[4,3-<i>b</i>]quinolin-6-ones Employing DMF as the Carbon Source
作者:Yiyi Weng、Hao Zhou、Chen Sun、Yuanyuan Xie、Weike Su
DOI:10.1021/acs.joc.7b01515
日期:2017.9.1
The first example of the copper-catalyzed cyclization of 4-(phenylamino)-2H-chromen-2-ones employing the N-methyl moiety of DMF as the source of the methine (CH) group has been developed, providing an efficient synthetic pathway to access novel functionalized 6H-chromeno[4,3-b]quinolin-6-ones in moderate to good yields.