A convenient, “one-pot” synthesis of trisubstituted pyrroles via a Ru(II)-catalyzed, Cu(II)-mediated reaction of substituted isoxazoles with sulfonylhydrazones has been developed. A series of highly functionalized pyrroles are obtained via a synergistic formation of new C−C and C−N bonds. Mechanistic investigations were carried out to propose the plausible pathway. This protocol provides a facile and
通过Ru( II ) 催化的、Cu( II ) 介导的取代异恶唑与磺酰腙的反应,一种方便的“一锅法”合成三取代吡咯得到了开发。通过新的 C-C 和 C-N 键的协同形成,获得了一系列高度功能化的吡咯。进行了机制研究以提出合理的途径。该协议为合成各种带有吡咯骨架的杂环化合物提供了一种简便快捷的方法。
Ruthenium-catalyzed oxidative coupling of vinylene carbonate with isoxazoles: access to fused anthranils
作者:Pravin Kumar、Manmohan Kapur
DOI:10.1039/d2cc01048h
日期:——
A ruthenium-catalyzedoxidative coupling of vinylene carbonate with isoxazoles has been developed to achieve the direct C–H formylmethylation of a diverse array of arylisoxazoles utilizing the isoxazole ring as the directing group. A simple manipulation of the established reaction conditions leads to the formation of fused-anthranils. Importantly, the vinylene carbonate functions as both a formylmethyl