Chemoselective S-benzylation of indoline-2-thiones using benzyl alcohols
作者:Mukund Jha、Oro Enaohwo、Ashley Marcellus
DOI:10.1016/j.tetlet.2009.10.050
日期:2009.12
Indoline-2-thiones were chemoselectively S-benzylated using a variety of benzyl alcohols by boron trifluoride etherate-catalyzed reactions. The aryl substituent effect on the reactivity of the benzyl alcohols toward S-benzylation is also discussed.
Au-Catalyzed Synthesis of Thiopyrano[2,3-<i>b</i>]indoles Featuring Tandem Rearrangement and Hydroarylation
作者:Mukund Jha、Shiv Dhiman、T. Stanley Cameron、Dalip Kumar、Anil Kumar
DOI:10.1021/acs.orglett.7b00617
日期:2017.4.21
heteroaromatic thiopyrano[2,3-b]indole is reported using conjugated enyne tethered indole sulfides, featuring skeletal rearrangement conjoined with intramolecular hydroarylation (via C3–H functionalization of the indole core) and oxidative aromatization. Subsequent Pd-catalyzed C–C coupling resulted in a 16-π electron heteroaromatic isothiochromeno[1,8,7-bcd]indole.
据报道,使用共轭烯键式吲哚硫化物进行金(III)催化的14-π电子杂芳族硫吡喃并[2,3- b ]吲哚的合成,其骨架重排与分子内氢芳基化作用(通过吲哚核的C3-H功能化)和氧化芳构化。随后的Pd催化的C–C偶联导致16-π电子杂芳族异硫氰酸色素[1,8,7- bcd ]吲哚。
Sulfone derivatives, process for their production and use thereof
申请人:——
公开号:US20030187023A1
公开(公告)日:2003-10-02
A compound represented by the formula:
1
wherein R is a cyclic hydrocarbon group, or the like; W is a bond, or the like; X is a divalent hydrocarbon group, or the like; Y and Z are each independently —N(R
6
)— or the like; ring A is a nitrogen-containing heterocyclic ring, or the like; R5 and R6 are independently hydrogen atom, a hydrocarbon group, or the like; Z′ is imidoyl group, or the like; a is 0, 1 or 2; and b is 0 or 1, or a salt thereof.
A base mediated environmentally benign one-potefficient methodology has been developed for the synthesis of [1,3]thiazino[3,2-a]indol-4-ones using indoline-2-thiones and propiolate esters in aqueous medium. The conjugate addition of thiones first results in ethyl (3-(indol-2-yl)thio)acrylates in situ, which subsequently undergoes intramolecular cyclization to produce indole-fused thiazin-4-ones in
Metal-Free Hydroamination of Alkynes: A Mild and Concise Synthesis of Thiazolo[3,2-a]indoles and their Cytotoxic Activity
作者:Spencer Short、Steven Rhodes、Vishakha S. Bhave、Ryoga Hojo、Mukund Jha
DOI:10.1055/s-0039-1690680
日期:2019.11
Abstract A metal-free, mild and efficient method for the synthesis of thiazolo[3,2-a]indoles has been developed starting from indoline-2-thiones. The reaction methodology involves first the formation of thermally labile 2-(prop-2-ynylthio)-1H-indole intermediates, which undergo base-mediated intramolecular hydroamination to produce the title compounds in excellent yields. A metal-free, mild and efficient method
抽象的 从二氢吲哚-2-硫酮开始,开发了一种无金属,温和有效的合成噻唑并[3,2- a ]吲哚的方法。该反应方法首先涉及热不稳定的2-(丙-2-炔硫基)-1 H-吲哚中间体的形成,该中间体经过碱介导的分子内氢化胺化反应以优异的产率生产标题化合物。 从二氢吲哚-2-硫酮开始,开发了一种无金属,温和有效的合成噻唑并[3,2- a ]吲哚的方法。该反应方法首先涉及热不稳定的2-(丙-2-炔硫基)-1 H-吲哚中间体的形成,该中间体经过碱介导的分子内氢化胺化反应以优异的产率生产标题化合物。