Catalytic C–C coupling of diazo compounds with arylboronic acids: using surface modified sewage sludge as catalyst
作者:Zhipeng Zhang、Yang Yu、Yuxing Xie、Timothy Hughes、Jun Xu、Fei Huang、He Huang
DOI:10.1039/d0gc00317d
日期:——
carbonaceous materials (SW) by perchloric acid catalyzed coupling reactions between diazo compounds and arylboronic acids was developed. The reaction shows a high level of functional tolerance and a broad substrate scope. Furthermore, the highly selective 1,2-alkyl shift products were furnished through the sterically demanding R4, R5 migration of diazo compounds (3-diazochromanone). The structures of 1,2-shift
通过高氯酸催化重氮化合物与芳基硼酸之间的偶联反应,开发了一种绿色,温和且高效的合成方法,该方法利用污水污泥衍生的碳质材料(SW)合成二芳基次甲基。该反应显示出高水平的功能耐受性和广泛的底物范围。此外,通过空间要求高的R 4,R 5提供了高选择性的1,2-烷基转移产物重氮化合物(3-重氮苯并二氢吡喃酮)的迁移。通过单晶X射线分析进一步证实了1,2-移位产物的结构。值得注意的是,darifenacin(一种用于膀胱过度活动症的临床药物,OAB)和diclofensine(一种显示出抗抑郁和单胺再摄取抑制剂活性的兴奋剂)的核心结构的合成进一步证明了该方法的有效性和合成潜力。