不含过渡金属的C–N和C–C的形成:由炔酮合成苯并[4,5]咪唑并[1,2- a ]吡啶和2-吡啶酮
摘要:
在此,已经揭示了在温和条件下炔烃与2-甲基苯并咪唑的无过渡金属的有效级联反应。该级联反应涉及迈克尔加成/分子内环加成/脱水,并以中等至良好的产率提供了所需的苯并[4,5]咪唑并[1,2- a ]吡啶。此外,三种苯并[4,5]咪唑并[1,2- a ]吡啶(3d,3i和3q)对Hep-G2(人类肝癌),T-24(人类膀胱癌细胞)和SK-OV-3(人类卵巢癌)细胞系,IC 50值在8.05–10.67μmolL -1范围内。为了研究有效抑制细胞生长的机制,对细胞周期分析,凋亡率检测,Ca 2+生成的测量,ROS,线粒体膜电位测定和caspase-3 / 9活化进行了进一步的研究。化合物3i。
Rh(I)‐Catalyzed Direct C6−H Arylation of 2‐Pyridones with Aryl Carboxylic Acids
作者:Haoqiang Zhao、Jianbin Xu、Xin Xu、Yixiao Pan、Zexin Yu、Lijin Xu、Qinghua Fan、Patrick J. Walsh
DOI:10.1002/adsc.202100596
日期:2021.8.13
Rh(I)-catalyzed C6-selective C−H arylation of 2-pyridones with inexpensive, readily available, safe and structurally diverse aryl carboxylic acids with the aid of a pyridine directing group is developed. This decarbonylative arylation protocol features an easy-to-handle catalytic system, and is amenable to diversely substituted 2-pyridones and aryl carboxylic acids. It allows access to a wide range
Cp*Ir‐Catalyzed C−H Arylation of 2‐Pyridones and 1‐Isoquinolinones with Arylsilanes
作者:Tongxu Su、Heng Xu、Yi Dong
DOI:10.1002/adsc.202400029
日期:2024.5.21
A new Cp*Ir‐catalyzed C–H arylation of 1‐isoquinolinone and 2 pyridones to afford 6‐phenylpyridin‐2(1H)‐ones and 3‐phenylisoquinolin‐1(2H)‐ones by using arylsilanes is described in this paper. This protocol offers significant synthetic advantages, including mild reaction conditions, good functional group tolerance, a wide range of substrate applicability, and a concise approach to the core structure