Simply swapping the counteranions of TMS leads to a switchable regioselectivity in C2– and C3–H thiolation of indoles.
将TMS的对阴离子简单交换可在吲哚的C2和C3-H硫化中导致可切换的区域选择性。
Benzoic Acid-Promoted C2–H Borylation of Indoles with Pinacolborane
作者:Youliang Zou、Binfeng Zhang、Li Wang、Hua Zhang
DOI:10.1021/acs.orglett.1c00809
日期:2021.4.2
A benzoic acid-promoted C2–H borylation of indoles with pinacolborane to afford C2-borylated indoles is developed. Preliminary mechanistic studies indicate BH3-related borane species formed via the decomposition of pinacolborane to be the probable catalyst. This transformation provides a prompt route toward the synthesis of diverse C2-functionalized indoles.
Acid-catalysed isomerization of indol-3-yl sulphides to indol-2-yl sulphides: unexpected intermolecular nature of the rearrangement
作者:Pierre Hamel、Yves Girard、Joseph G. Atkinson
DOI:10.1039/c39890000063
日期:——
The rearrangement of indol-3-ylsulphides (1) to indol-2-ylsulphides (4), catalysed by proton acids, unexpectedly proceeds by an intermolecualr mechanism involving initial disproportionation to an indole-2,3-diyl bis-sulphide (2) and an indole (3), followed by a reaction between (2) and (3) to yield the rearranged product (4).
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。