Catalytic Synthesis of 3-Thioindoles Using Bunte Salts as Sulfur Sources under Metal-Free Conditions
作者:Hong Qi、Tongxin Zhang、Kefeng Wan、Meiming Luo
DOI:10.1021/acs.joc.6b00636
日期:2016.5.20
An efficient catalytic method for the synthesis of 3-thioindoles has been successfully developed, which uses odorless, stable, readily available crystalline Buntesalts as the sulfenylating agents, iodine as nonmetallic catalyst, and DMSO as both the oxidant and solvent. This method is practical and environmentally benign in terms of sulfur sources, catalyst, and solvent. The catalytic reaction is
Cyclization of 2- and 3-indolythioalkanoic acids to novel indole-containing tricyclic ring systems
作者:Pierre Hamel、Mario Girard
DOI:10.1002/jhet.5570330624
日期:1996.11
series of 2- and 3-indolylthioalkanoic acids of various chain lengths were cyclized under dehydrative conditions affording tricyclic indole-containingringsystems wherein the third ring contains a sulfur atom attached to the 2- or 3-position of the indole ring. This methodology affords entry into the novel thiepino[3,2-b]indole, thiocino[2,3-b]indole and thiocino[3,2-b]indole ringsystems.
在脱水条件下将一系列各种链长的2-和3-吲哚基硫代链烷酸环化,得到含三环吲哚的环系统,其中第三个环含有连接到吲哚环的2-或3-位的硫原子。该方法提供了新的噻吩并[3,2- b ]吲哚,噻吩并[2,3- b ]吲哚和噻吩并[3,2- b ]吲哚环系统的入口。
Chiral Phosphoric Acid‐Catalyzed Chemo‐ and Enantioselective N‐Alkylation of Indoles with Imines
作者:Shuyuan Yang、Linger Li、Junling Zhao
DOI:10.1002/adsc.202201077
日期:2022.12.8
A chemo- and enantioselective protocol for the N-alkylation of indoles with imines was developed. This process was catalyzed by a BINOL-derived phosphoric acid catalyst to give the corresponding acyclic aminals of indoles in 46–99% yields with 70–98% ee. The application of this method for the “late-stage” functionalization of a bioactive compound was performed with high efficency. The products showed
开发了用亚胺对吲哚进行 N-烷基化的化学和对映选择性方案。该过程由 BINOL 衍生的磷酸催化剂催化,以 46-99% 的产率和 70-98% ee 得到相应的吲哚无环缩醛胺。该方法用于生物活性化合物“后期”功能化的应用效率很高。产品表现出良好的稳定性,并可以进行许多进一步的转化。
Discovery and optimization of 2-((1H-indol-3-yl)thio)-N-benzyl-acetamides as novel SARS-CoV-2 RdRp inhibitors
作者:Guo-Ning Zhang、Jianyuan Zhao、Quanjie Li、Minghua Wang、Mei Zhu、Juxian Wang、Shan Cen、Yucheng Wang