通过苯胺与萘醌的氧化偶合,然后钯催化的氧化C H官能化和一锅还原甲基化反应,制备了新颖的高蓝色荧光N-甲基-6,11-二甲氧基苯并[2,3- b ]咔唑衍生物。对苯并咔唑荧光团进行了光物理表征,并研究了取代基的作用。(TD)-DFT计算忠实地再现了苯并咔唑的实验光物理性质,并揭示了取代基如何影响这些化合物的光物理性质。
通过苯胺与萘醌的氧化偶合,然后钯催化的氧化C H官能化和一锅还原甲基化反应,制备了新颖的高蓝色荧光N-甲基-6,11-二甲氧基苯并[2,3- b ]咔唑衍生物。对苯并咔唑荧光团进行了光物理表征,并研究了取代基的作用。(TD)-DFT计算忠实地再现了苯并咔唑的实验光物理性质,并揭示了取代基如何影响这些化合物的光物理性质。
Synthesis of Carbazolequinones by Formal [3 + 2] Cycloaddition of Arynes and 2-Aminoquinones
作者:Jian Guo、I. N. Chaithanya Kiran、R. Santhosh Reddy、Jiangsheng Gao、Meiqiong Tang、Yuyin Liu、Yun He
DOI:10.1021/acs.orglett.6b01090
日期:2016.5.20
A formal cycloaddition reaction for the synthesis of biologically and pharmaceutically important carbazolequinones via the annulation of aminoquinones with arynes has been developed. This practical and metal-free cascade reaction proceeds through successive C–C/C–N bond formations. Moreover, this novel method has been utilized for the concise synthesis of bioactive murrayaquinone A and koeniginequinone
Acid-Free Synthesis of Carbazoles and Carbazolequinones by Intramolecular Pd-Catalyzed, Microwave-Assisted Oxidative Biaryl Coupling Reactions - Efficient Syntheses of Murrayafoline A, 2-Methoxy-3-methylcarbazole, and Glycozolidine
作者:Vellaisamy Sridharan、M. Antonia Martín、J. Carlos Menéndez
DOI:10.1002/ejoc.200900537
日期:2009.9
A mild and efficient methodology for the synthesis of oxygenated carbazoles from diarylamines under non-acidic conditions was developed, based on a palladium-catalyzed, microwave-assisted double C–H bond activation process. This new protocol was successfully applied to the synthesis of three naturally occurring carbazoles, namely murrayafoline A, 2-methoxy-3-methylcarbazole, and glycozolidine. The
2-Phenylaminonaphthoquinones and related compounds: Synthesis, trypanocidal and cytotoxic activities
作者:Ivan Sieveking、Pablo Thomas、Juan C. Estévez、Natalia Quiñones、Mauricio A. Cuéllar、Juan Villena、Christian Espinosa-Bustos、Angélica Fierro、Ricardo A. Tapia、Juan D. Maya、Rodrigo López-Muñoz、Bruce K. Cassels、Ramon J. Estévez、Cristian O. Salas
DOI:10.1016/j.bmc.2014.07.030
日期:2014.9
A series of new 2-aminonaphthoquinones and relatedcompounds were synthesized and evaluated in vitro as trypanocidal and cytotoxic agents. Some tested compounds inhibited epimastigote growth and trypomastigote viability. Several compounds showed similar or higher activity and selectivity as compared with current trypanocidal drug, nifurtimox. Compound 4l exhibit higher selectivity than nifurtimox against
A short, efficient and general methodology for benzo[b]carbazolenaphthoquinones was developed via Pd‐catalyzed C‐H arylation process. This methodology was successfully applied to the synthesis of highly biologically active compound 5H–benzo[b]carbazole‐6,11‐diones. Additionally, one‐pot synthesis of benzo[b]phenazine‐6,11(5H,12H)‐dione derivatives was also explored in aqueous medium.
通过Pd催化的CH-H芳基化过程,开发了一种简短,高效且通用的苯并[ b ]咔唑萘醌方法。该方法已成功地用于合成具有高生物活性的化合物5H-苯并[ b ]咔唑-6,11-二酮。此外,还研究了在水介质中一锅法合成苯并[ b ]吩嗪-6,11(5H,12H)-二酮衍生物。
Catalytic oxidative aromatic cyclizations with palladium
作者:Björn Åkermark、Johan D. Oslob、Ulrich Heuschert
DOI:10.1016/0040-4039(94)02467-p
日期:1995.2
Using tert-butyl hydroperoxide as oxidant, facile palladium-catalyzed cyclizations of arylaminoquiones have been performed.