铜(I)催化的N-吲哚系环丙烯的分子内串联环化:功能化的氢化二氮杂苯并[ a ]环戊[ cd ] azulene衍生物的合成
摘要:
本文提出了Cu(I)催化的N吲哚系环丙烯的[3 + 2]分子内环加成反应。该反应始于在用Cu(I)催化剂活化环丙烯并进行Friedel-Crafts型环化反应以形成官能化的氢化二氮杂苯并[ a ]环戊[ cd ]之后,形成π-烯丙基阳离子中间体或其共振稳定的金属类化合物中间体。天青石的产量高到极好,dr值中等到良好。可以实现该环加成反应的不对称变体,从而得到具有中等ee值的所需产物。
Cu(I)-Catalyzed Intramolecular Tandem Cyclization of <i>N</i>-Indole-Tethered Cyclopropenes: Synthesis of Functionalized Hydrogenated Diazabenzo[<i>a</i>]cyclopenta[<i>cd</i>]azulene Derivatives
作者:Peng-Hua Li、Song Yang、Tong-Gang Hao、Qin Xu、Min Shi
DOI:10.1021/acs.orglett.9b00864
日期:2019.5.3
A Cu(I)-catalyzed [3 + 2] intramolecular cycloaddition reaction of N-indole-tethered cyclopropenes is presented in this paper. This reaction starts from the formation of π-allyl cationic intermediate or its resonance-stabilized metal carbenoid intermediate upon activation of cyclopropene with Cu(I) catalyst and a Friedel–Crafts-type cyclization to give functionalized hydrogenated diazabenzo[a]cyclopenta[cd]azulenes
本文提出了Cu(I)催化的N吲哚系环丙烯的[3 + 2]分子内环加成反应。该反应始于在用Cu(I)催化剂活化环丙烯并进行Friedel-Crafts型环化反应以形成官能化的氢化二氮杂苯并[ a ]环戊[ cd ]之后,形成π-烯丙基阳离子中间体或其共振稳定的金属类化合物中间体。天青石的产量高到极好,dr值中等到良好。可以实现该环加成反应的不对称变体,从而得到具有中等ee值的所需产物。
Access to Azepino-Annulated Benzo[<i>c</i>]carbazoles Enabled by Gold-Catalyzed Hydroarylation of Alkynylindoles and Subsequent Oxidative Cyclization
Herein, we report a facile and efficientsynthetic method to construct azepino[1,2-a]indoles through a novel gold(I)-catalyzed intramolecular hydroarylation of alkynylindoles. A wide range of functional groups can be well tolerated in this transformation, and the corresponding highly functionalized azepino[1,2-a]indole skeletons were obtained in moderate to excellent yields. Subsequent oxidation of
在此,我们报道了一种简便有效的合成方法,通过一种新型金(I)催化的炔基吲哚分子内加氢芳基化来构建 azepino[1,2- a ]indoles。在该转化过程中可以很好地耐受多种官能团,并且以中等至优异的产率获得了相应的高度官能化的氮杂[1,2- a ]吲哚骨架。随后的产物氧化得到了有趣且有价值的多环咔唑,它们被广泛用作材料科学的关键组成部分。
Rhodium(II)‐Catalyzed Intramolecular Annulation of 1‐Sulfonyl‐1,2,3‐Triazoles with Pyrrole and Indole Rings: Facile Synthesis of N‐Bridgehead Azepine Skeletons
作者:Jin‐Ming Yang、Cheng‐Zhi Zhu、Xiang‐Ying Tang、Min Shi
DOI:10.1002/anie.201400881
日期:2014.5.12
method has been developed to construct highly functionalized N‐bridgeheadazepineskeletons, which are of great importance in biological and pharmaceutical industry. The reaction proceeds through a rhodium(II) azavinyl carbene intermediate, which initiated the intramolecular CH functionalization with pyrrolyl and indolyl rings. A variety of azepine derivatives were obtained in moderate to good yields under