Transposition of Aromaticity from a Furan to a Cyclohexane Ring in Furoisoindoles During the Interaction of 3-(Furyl)allylamines with Bromomaleic Anhydride
作者:Kseniia A. Alekseeva、Elizaveta A. Kvyatkovskaya、Eugeniya V. Nikitina、Vladimir P. Zaytsev、Svetlana M. Eroshkina、Khidmet S. Shikhaliev、Hieu H. Truong、Victor N. Khrustalev、Fedor I. Zubkov
DOI:10.1055/s-0039-1690782
日期:2020.2
investigation of the interaction between 3-(furan-2-yl)allylamines and bromomaleic anhydride. This conversion begins with the initial N-acylation of the allylamines by the anhydride, followed by intramolecular Diels–Alder reaction, which is accompanied by a dehydrohalogenation, and ends with the formation of partially unsaturated furo[2,3-f]isoindoles followed by transposition of aromaticity from the furan moiety
在研究 3-(呋喃-2-基) 烯丙胺和溴马来酸酐之间的相互作用的过程中发现了一个意想不到的四步反应序列。这种转化从烯丙胺被酸酐的初始 N-酰化开始,然后是分子内 Diels-Alder 反应,伴随着脱卤化氢,最后形成部分不饱和的呋喃 [2,3-f] 异吲哚,然后是芳香性从呋喃部分转移到相邻的环己烷环。3-(呋喃-3-基)烯丙胺和溴马来酸酐之间的反应不会在呋喃[2,3-f]异吲哚形成步骤停止,而是进一步进行呋喃环的裂解,原子效率为100%提供多取代的异二氢吲哚-4-羧酸。