Synthesis of Polyheteroaromatic Compounds via Rhodium-Catalyzed Multiple C–H Bond Activation and Oxidative Annulation
作者:Shiyong Peng、Suna Liu、Sai Zhang、Shengyu Cao、Jiangtao Sun
DOI:10.1021/acs.orglett.5b02510
日期:2015.10.16
Transition-metal-catalyzed multiple C–H activation and sequential oxidative annulation allows rapidly assembling of those compounds from readily available starting materials. A rhodium-catalyzed cascade oxidative annulation of β-enamino esters or 4-aminocoumarins with internal alkynes is described to access those compounds, featuring multiple C–H/N–H bond cleavages and sequential C–C/C–N bond formations in one pot
由于其电和光化学特性,多杂芳族化合物是潜在的光电共轭材料。过渡金属催化的多个C–H活化和顺序的氧化环化使这些化合物可以从容易获得的起始原料中快速组装。用铑催化的β-烯胺酯或4-氨基香豆素与内部炔烃的级联氧化环氧化法可得到这些化合物,具有多个C–H / N–H键裂解和一个连续的C–C / C–N键形成锅。