imidazo[1,2-a]pyridines using p-tosylchloride as a benign source of sulfenylating agents has been developed. On the other hand, p-tosylchloride mediated thiomethylation of imidazo[1,2-a]pyridines with dimethylsulfoxide as a source of thiomethylation under metal-free conditions was also described.
已经开发了使用对甲苯磺酰氯作为亚磺化剂的良性来源的咪唑并[1,2- a ]吡啶的铜催化的区域选择性C-3亚磺酰基化。另一方面,还描述了在无金属条件下,对甲苯磺酰氯介导的咪唑并[1,2- a ]吡啶的硫甲基化,其中使用二甲基亚砜作为硫甲基化的来源。
Hypervalent iodine mediated synthesis of imidazo[1,2-<i>a</i>]pyridine ethers: consecutive methylene linkage and insertion of ethylene glycol
Hypervalent iodine mediated selective synthesis of imidazo[1,2-a]pyridine ethers using ethylene glycol as a methoxy ethanol source as well as solvent under metal-free conditions is described. The method is also applicable to other fused heterocycles such as benzo[d]imidazo[2,1-b]thiazoles, 2-(thiophen-2-yl)benzo[d]imidazo [2,1-b]thiazole and indazole. Control experiments suggest that, when the C-3
描述了在无金属条件下使用乙二醇作为甲氧基乙醇源以及溶剂的高价碘介导的咪唑并[1,2- a ]吡啶醚的选择性合成。该方法还适用于其他稠合杂环,例如苯并[ d ]咪唑并[ 2,1- b ]噻唑,2-(噻吩-2-基)苯并[ d ]咪唑并[ 2,1- b ]噻唑和吲唑。对照实验表明,当咪唑并[1,2- a ]吡啶的C-3位被封闭时,该反应不会在显示本方案区域选择性的任何其他位置发生。
Annulation of imidazo[1,2-<i>a</i>]pyridines under metal-free conditions
A base promoted protocol for the synthesis of benzo[a]imidazo[5,1,2-cd]indolizines from 2-arylimidazo[1,2-a]pyridines and benzyne precursors under metal-free conditions has been developed. Without a transition metal, double C(sp2)–H activation of 2-phenylimidazo[1,2-a]pyridines under basic conditions was achieved. This method is also applicable for the annulation of imidazo[1,2-a]pyrimidine and naphthylamine
已开发了在无金属条件下由2-芳基咪唑[1,2- a ]吡啶和苯炔前体合成苯并[ a ]咪唑并[5,1,2- cd ]吲哚嗪的基础促进方案。没有过渡金属,双C(SP 2)- H 2苯基咪唑的活化[1,2一]在碱性条件下的吡啶达到了。该方法也适用于在相同条件下咪唑并[1,2- a ]嘧啶和萘胺的环化反应。这些环状分子表现出荧光特性,因此评价了它们的光物理性质。
Polyethylene Glycol (PEG-400) as Methylene Spacer and Green Solvent for the Synthesis of Heterodiarylmethanes under Metal-Free Conditions
作者:Rahul Kumar、Deepa Rawat、Subbarayappa Adimurthy
DOI:10.1002/ejoc.202000467
日期:2020.6.23
protocol for the direct synthesis of heterodiarylmethanes employing polyethylene glycol (PEG‐400) as methylene spacer under metal‐free conditions. The method is applicable to heterocycles such as imidazopyridines, imidazothioazoles, imidazobenzothiozoles, indolizines, indole, 1‐methyl‐1H‐indole, N,N‐dimethylaniline, and trimethoxybenzene; (diacetoxyiodo)benzene (PIDA) is used as oxidant.
Agents And Methods For Treating Ischemic And Other Diseases
申请人:Sun Xiujun
公开号:US20140221423A1
公开(公告)日:2014-08-07
This invention relates to compounds that modulate TRPM7 protein activity and use of the same for treatment or prophylaxis of ischemia, cancer, pain or glaucoma.