Enantioselective synthesis of indolo[2,3-b]-dihydrothiopyranones via [3+3] cycloaddition of chiral α,β-unsaturated acylammonium salts
作者:Jing-Hai Jin、Xiang-Yu Li、Xiaoyan Luo、Wei-Ping Deng
DOI:10.1016/j.tet.2018.09.024
日期:2018.11
nucleophile-catalyzed Michael addition/proton transfer/lactonization (NCMPL) organocascade process of chiral α,β-unsaturated acylammonium salts and indoline-2-thiones is described, which delivers the indolo[2,3-b]dihydrothiopyranone motifs in high yields (up to 97%) with good to excellent enantioselectivities (up to 98% ee).
描述了亲核催化剂催化的手性α,β-不饱和酰基铵盐和二氢吲哚-2-硫酮的迈克尔加成/质子转移/内酯化(NCMPL)有机级联反应,该反应可高产率地产生吲哚[2,3- b ]二氢噻喃酮基序(高达97%)具有良好至优异的对映选择性(高达98%ee)。
Copper-catalyzed synthesis of 2-sulfenylindoles from indoline-2-thiones and aryl iodides
作者:Shiping Zhou、Genhua Xiao、Yun Liang
DOI:10.1016/j.tetlet.2016.12.028
日期:2017.1
A novel and efficient method for synthesis of 2-sulfenylindole via copper-catalyzedcoupling reaction of indoline-2-thiones with aryliodides has been developed. A series of N-substituted and N-free 2-sulfenylindole were obtained in high yields. Furthermore, the method was employed to synthesis of benzothieno[2,3-b]indoles from indoline-2-thiones with 1,2-diiodobenzene in the presence of CuI and Pd(OAc)2
通过铜催化的吲哚-2-硫酮与芳基碘的偶联反应合成2-亚磺酰基吲哚的新方法已经得到了发展。以高收率获得了一系列的N-取代的和不含N的2-亚磺酰基吲哚。此外,该方法用于在CuI和Pd(OAc)2作为催化剂存在下,由吲哚啉-2-硫酮与1,2-二碘代苯合成苯并噻吩并[2,3- b ]吲哚。
Synthesis of indole-annulated sulfur heterocycles using copper-catalysed C–N coupling and palladium-catalysed direct arylation
作者:Ganesh M. Shelke、Mukund Jha、Anil Kumar
DOI:10.1039/c6ob00117c
日期:——
A simple and efficient method for the synthesis of biologically relevant 5H-benzo[4,5][1,3]thiazino[3,2-a]indoles and 5,7-dihydroisothiochromeno[3,4-b]indoles has been developed via intramolecular copper catalysed Ullmann-type C–N coupling and palladium catalysed direct arylation from the corresponding precursors 2-(2-bromobenzylthio)-1H-indole and 2-(2-bromobenzylthio)-1-methyl-1H-indole, respectively
一种简单有效的合成生物学上相关的5 H-苯并[4,5] [1,3]噻嗪基[3,2- a ]吲哚和5,7-二氢异硫代色素[3,4- b ]吲哚的方法开发通过分子内铜催化的Ullmann型C-N偶联和钯从相应的前体2-(2- bromobenzylthio)-1催化芳基化直接ħ -吲哚和2-(2- bromobenzylthio)-1-甲基-1- ħ -吲哚,分别具有良好至优异的产量。
Synthesis of tetrahydrothiopyrano[2,3-<i>b</i>]indoles <i>via</i> [3+3] annulation of nitroallylic acetates with indoline-2-thiones
作者:Pallabita Basu、Chiranjit Hazra、Thekke V. Baiju、Irishi N. N. Namboothiri
DOI:10.1039/c9nj04754a
日期:——
and stereoselective synthesis of thiopyran annulated indoles. It involves a base mediated cascade [3+3] annulation of indoline-2-thiones and nitroallylic acetates. The tetrahydrothiopyranoindoles which were formed in good yields and in a short reaction time could be easily transformed to triazole derivatives by taking advantage of the nitro group present in the skeleton.
Zinc-Catalyzed Enantioselective [3 + 3] Annulation for Synthesis of Chiral Spiro[indoline-3,4′-thiopyrano[2,3-b]indole] Derivatives
作者:Tian-Tian Liu、Yu Chen、Guang-Jian Mei、Yuan-Zhao Hua、Shi-Kun Jia、Min-Can Wang
DOI:10.3390/molecules28031056
日期:——
dinuclear zinc-ProPhenol complex as a catalyst, an efficient and novel [3 + 3] annulation of indoline-2-thiones and isatylidene malononitriles has been successfully developed via the Brønsted base and Lewis acid cooperative activation model. This practical methodology gives access to a broad range of chiral spiro[indoline-3,4'-thiopyrano[2,3-b]indole] derivatives in good yields with excellent levels of enantioselectivities