A water-mediated C–H activation using sulfoxonium ylides is reported, providing a general, green and step-economic approach to construct a C–C bond and varieties of useful N-heterocycle scaffolds. Notably, the “water-mediated” activation, in contrast to that in organic solvents, shows great potential in pharmaceutical, biochemistry and chemical industries.
A novel and general procedure for Cu-catalyzed coupling of enamides with alkynes to synthesize substituted pyridines was developed. The chemistry was allowed to extend to the synthesis of substituted isoquinolines by coupling of enamides with arynes under transition-metal-free conditions.
An efficient rhodium(III)-catalyzed C–H activation followed by intermolecular annulation between enamides and sulfoxonium ylides has been developed. The transformation proceeds smoothly with a broad range of substrates, affording a series of isoquinoline derivatives in moderate to good yields under additive-free conditions.
已经开发出一种高效的铑 ( III ) 催化的 C-H 活化,然后在烯酰胺和亚砜叶立德之间进行分子间成环。该转化可在多种底物中顺利进行,在无添加剂的条件下以中等至良好的产率提供一系列异喹啉衍生物。