Direct Tryptophols Synthesis from 2-Vinylanilines and Alkynes via C≡C Triple Bond Cleavage and Dioxygen Activation
作者:Tao Shen、Yiqun Zhang、Yu-Feng Liang、Ning Jiao
DOI:10.1021/jacs.6b08094
日期:2016.10.12
metal-free C≡C triple bondcleavage, dioxygen activation, and reassembly into tryptophol derivatives has been developed. This chemistry provides a novel, simple, and efficient approach to highly valuable tryptophol derivatives from simple substrates under mild conditions. The mechanistic studies may promote the discovery of new methodologies through C-C bondcleavage and dioxygen activation.
已经开发出一种意想不到的无金属 C≡C 三键断裂、双氧活化和重新组装成色氨酸衍生物。这种化学反应提供了一种新颖、简单且有效的方法,可以在温和条件下从简单底物获得高价值的色氨酸衍生物。机理研究可能会通过 CC 键裂解和分子氧活化促进新方法的发现。
Direct Synthesis of Structurally Divergent Indole Alkaloids from Simple Chemicals
A direct and structurally divergent synthesis of indole alkaloidsfrom very simple 2‐vinylanilines, alkynes and TBN via a novel substrate fragmentation/cycloaddition strategy has been developed, which provides an efficient noble‐metal‐free approach to access a library of highly valuable indole derivatives of tryptamines and tryptamine‐related oximes, lactams, and lactones, as well as β‐carbolines,
已开发出一种新颖的底物裂解/环加成策略,可从非常简单的2-乙烯基苯胺,炔烃和TBN直接合成并在结构上多样化的吲哚生物碱,这提供了一种无贵金属的有效方法,可访问高度有价值的吲哚衍生物库包括色胺和色胺相关的肟,内酰胺和内酯,以及β-咔啉,螺二吲哚和六氢吡咯并[2,3- b ]吲哚。
Indole Synthesis Based On A Modified Koser Reagent
作者:Laura Fra、Alba Millán、José A. Souto、Kilian Muñiz
DOI:10.1002/anie.201402661
日期:2014.7.7
preparation of indoles has been developed. This process is based on sterically congested hypervalent iodine compounds of the family of Koserreagents, and iodosobenzene in combination with 2,4,5‐tris‐isopropylbenzene sulfonic acid provides the highest yields and fastest reaction times. This reagent alone promotes the chemoselective oxidative cyclization of 2‐amino styrenes to indoles in high yields