作者:Xiao-Shan Ning、Xin Liang、Kang-Fei Hu、Chuan-Zhi Yao、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1002/adsc.201701512
日期:2018.4.17
A Pd‐tBuONO co‐catalyzed scalable and practical synthesis of indoles with molecular oxygen as terminal oxidant is developed. Either terminal or internal 2‐vinylanilines could be smoothly converted to desired indoles under one general condition. This method has been evaluated in the large scale synthesis of indomethacin and a potential anti‐breast cancer drug candidate 1.
Silver(I)-Mediated CH Amination of 2-Alkenylanilines: Unique Solvent-Dependent Migratory Aptitude
作者:So Won Youn、Tae Yun Ko、Min Jung Jang、Su San Jang
DOI:10.1002/adsc.201400759
日期:2015.1.12
A highly effective silver(I)‐mediated CHamination of 2‐alkenylanilines has been developed to afford a diverse range of substituted indoles. High functional group tolerance, broad substrate scope, simple/fast/high‐yielding reaction, and recovery/reuse of the inexpensive silver oxidant are noteworthy. Furthermore, an uncommon migratory process of β‐monosubstituted 2‐alkenylanilines with solvent‐dependence
4-naphthoquinone derivatives, and benzo[b]acridine-6,11-diones were formed in good yields. A method has been developed for the synthesis of highly functionalized quinolines from readily available N-(2-alkenylaryl)-substituted enamines via a 6-exo-trig radicalcyclization of an imine radical. Several useful functional groups including morpholinocarbonyl, benzoyl, and cyano, are compatible with the reaction conditions
摘要 已经开发了一种方法,该方法通过亚胺基的6- exo - trig自由基环化反应,由容易获得的N-(2-链烯基芳基)-取代的烯胺合成高度官能化的喹啉。几个有用的官能团包括吗啉代羰基,苯甲酰基和氰基,与反应条件相容。在Mn(II)/ Co(II)/ O 2氧化还原体系下,这些N-(2-链烯基芳基)烯胺也有效地转化为相应的喹啉。将该策略进一步应用于相关的1,4-萘醌衍生物,并以良好的收率形成了苯并[ b ] r啶-6,11-二酮。 已经开发了一种方法,该方法通过亚胺基的6- exo - trig自由基环化反应,由容易获得的N-(2-链烯基芳基)-取代的烯胺合成高度官能化的喹啉。几个有用的官能团包括吗啉代羰基,苯甲酰基和氰基,与反应条件相容。在Mn(II)/ Co(II)/ O 2氧化还原体系下,这些N-(2-链烯基芳基)烯胺也有效地转化为相应的喹啉。将该策略进一步应用于相关的1,4-萘醌衍生物,并以良好的收率形成了苯并[
Copper-Catalyzed Aerobic Oxidative Carbocyclization Reactions of N-[(E)-Stilben-2-yl]amine Derivatives
作者:Che-Ping Chuang、Cheng-Yen Lu
DOI:10.1055/s-0034-1378870
日期:——
aerobic oxidative carbocyclization reactions of α-substituted N-[(E)-stilben-2-yl]acetamides, via the intramolecular carbocupration onto the alkenyl moiety, produced 3-substituted 2-quinolinones. Several useful functional groups including benzoyl, acetyl, cyano, and ethoxycarbonyl groups are compatible with the reaction conditions. This strategy was further applied to N-[(E)-stilben-2-yl]enamines to prepare
synthesis of 2‐vinylanilines from the reaction of arylhydrazine hydrochlorides with alkenes and diethyl ketone via a rhodium‐catalyzed CHactivation is described. The oxidant‐free olefination reaction involves the in situ generation of an NNCR1R2 moiety as the oxidizingdirecting group thus providing an easy access to 2‐vinylanilines.