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由双功能中性联体激活的Ir(III) 催化酶选择性C-H激活的基拉策略

Zi-Jia Chen¹, Wen-Kui Yuan¹, Jimin Yang²

¹State Key Laboratory of Soil Pollution Control and Safety, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.

Journal of the American Chemical Society

|February 16, 2026

概括

研究人员开发了一种新的性离子策略,用于使用性催化剂进行不对称的C-H功能化. 这种方法可以有效地合成复杂的N-化异芳螺旋体,具有独特的手术特性.

科学领域:

有机金属化学有机金属化学
不对称的催化剂.
异环化学异环化学

背景情况:

不对称的9组Cp*M(III) 催化C-H功能化由于催化剂协调和而面临挑战.
现有的方法依赖于奇拉Cp^X连接体或奇拉离子,限制了概括性.
在这种催化过程中使用外部L型性配体的通用方法是难以捉摸的.

研究的目的:

引入一种用于不对称的C-H功能化的新性离子策略.
为了使一个阿基拉Cp^*tBuIr(III) 催化剂能够达到高的反选择性.
为了提供有效的获取含有pyrazole的diaza[6]helicenes.

主要方法:

使用了一种设计的双功能中性亚酸氧化物联结剂.
采用了一种性离子策略,使用一种性Cp^*tBuIr(III) 催化剂.
进行了联合的机械学和计算研究.

主要成果:

在使用阿基拉催化剂的C-H功能化中实现了高的酶选择性.
成功合成了含有Pyrazole的Diaza[6]helicenes,这是一个难以获得的N-化异芳素类别.
合成的螺旋体显示出有前途的手术性能,包括循环极化发光.

结论:

在C-H激活步骤中,通过一种奇拉性阴性Cp^*tBuIr(III) 复合体建立了因子控制.
双功能中性亚酸氧化物连接体在立体定义过渡状态中起着至关重要的作用.
这项工作介绍了一种新的连接体平台,用于与简单的Cp*M(III) 复合体进行不对称的C-H功能化.

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