成功实现了温和有效的Cu 2 O催化的多米诺骨牌分子内C–N偶联/ C–Y(Y = O,S,N)键的形成。因此,恶唑并[3,2- a ]吲哚,噻嗪并[3,2- a ]吲哚和吲哚并[2,1- b ]喹唑啉衍生物是从容易得到的宝石-二溴乙烯基系统容易地组装而成的。该方案是通用且实用的,即使在空气气氛下,也能以优异的产率提供各种掺入吲哚的产品。
Iron(III) Chloride as a Mild Catalyst for the Dearomatizing Cyclization of <i>N</i>-Acylindoles
作者:Jingyu Zhang、Jing Li、Jas S. Ward、Khai-Nghi Truong、Kari Rissanen、Markus Albrecht
DOI:10.1021/acs.joc.0c01373
日期:2020.10.2
A catalytic approach for the preparation of indolines by dearomatizing cyclization is presented. FeCl3 acts as a catalyst to afford tetracyclic 5a,6-dihydro-12H-indolo[2,1-b][1,3]benzoxazin-12-ones in good yields. The cyclization also proceeds with tosylamides forming C–N bonds in 53% yield.
提出了一种通过脱芳香环化反应制备二氢吲哚的催化方法。FeCl 3用作催化剂,以高收率得到四环5a,6-二氢-12 H-吲哚并[ 2,1 - b ] [1,3]苯并恶嗪-12-。环化反应还会继续进行,甲苯磺酰胺以53%的收率形成C–N键。
Copper-catalyzed domino intramolecular cyclization: a facile and efficient approach to polycyclic indole derivatives
A mild and efficient Cu2O-catalyzed domino intramolecular C–N coupling/C–Y (Y = O, S, N) bond formation was successfully achieved. Thus oxazino[3,2-a]indole, thiazino[3,2-a]indole and indolo[2,1-b]quinazoline derivatives were facilely assembled from readily accessible gem-dibromovinyl systems. The protocol is general and practical, affording a variety of the indole-incorporated products in good to
成功实现了温和有效的Cu 2 O催化的多米诺骨牌分子内C–N偶联/ C–Y(Y = O,S,N)键的形成。因此,恶唑并[3,2- a ]吲哚,噻嗪并[3,2- a ]吲哚和吲哚并[2,1- b ]喹唑啉衍生物是从容易得到的宝石-二溴乙烯基系统容易地组装而成的。该方案是通用且实用的,即使在空气气氛下,也能以优异的产率提供各种掺入吲哚的产品。