Synthesis and structure of nitroethylpyrrolidone carboxylates
摘要:
3-Methoxycarbonyl-4-phenyl- and 4-(3-pyridyl)-2-pyrrolidones react with 2-aryl(heteryl)-1-nitroethenes to form C(3)-adducts as one or two diastereomers. Their structure was characterized by the IR, (1)H, and (13)C NMR spectroscopy, using the two-dimensional correlation spectroscopy.
Visible-Light-Induced Trifluoromethylation of Isonitrile-Substituted Indole Derivatives: Access to 1-(Trifluoromethyl)-4,9-dihydro-3<i>H</i>-pyrido[3,4-b]indole and<i>β</i>-Carboline Derivatives
作者:Jiaxin Liu、Longhai Li、Liuzhu Yu、Lisha Tang、Qin Chen、Min Shi
DOI:10.1002/adsc.201800568
日期:2018.8.6
visible‐light‐induced trifluoromethylation of isonitrile‐substituted indolederivatives has been developed from the reaction of isonitrile‐substituted indoles with Togni II reagent, affording 1‐(trifluoromethyl)‐4,9‐dihydro‐3H‐pyrido[3,4‐b]indoles in moderate to good yields. The further transformations to β‐carboline derivatives and a harmacine derivative have been performed, demonstrating the potential synthetic
The stereochemical divergent synthesis of indolyl-pyrrolidines was accomplished using an imidazoline-aminophenol (IAP)–Ni(OAc)2 complex and a bis(imidazolidine)pyridine (PyBidine)–Cu(OTf)2 complex. The former catalyzed exo′-selective asymmetric [3 + 2] cyclization of iminoesters with indolyl nitroalkenes, and the latter catalyzed the reaction in an endo-selective manner. These catalysts are tolerant
Construction of benzo[a]carbazole derivatives via Diels–Alder reaction of arynes with vinylindoles
作者:Lijun Wu、Hui Huang、Pan Dang、Yun Liang、Shaofeng Pi
DOI:10.1039/c5ra11025d
日期:——
A new protocol for a highly efficienct and versatile Diels–Alder reaction of vinylindoles with arynes (generated form 2-(trimethylsilyl)aryl triflate) has been developed. Various functionalized benzo[a]carbazoles were afforded in good to perfect yields via [4 + 2] cycloaddition/aromatization.
已经开发出一种新的协议,用于乙烯基吲哚与芳烃的高效狄斯-阿尔德反应(生成形式为2-(三甲基甲硅烷基)芳基三氟甲磺酸酯)。通过[4 + 2]环加成/芳构化,可以提供各种官能化的苯并[ a ]咔唑,收率良好至理想。