A convenient pinacol coupling of diaryl ketones with B<sub>2</sub>pin<sub>2</sub><i>via</i> pyridine catalysis
作者:Junhyuk Jo、Seonyul Kim、Jun-Ho Choi、Won-jin Chung
DOI:10.1039/d0cc07723b
日期:——
requires sensitive reducing metal, the current method employs a stable diboron reagent and pyridine Lewis base catalyst for the generation of a ketyl radical. The newly developed process is operationally simple, and the desired diols are produced with excellent efficiency in up to 99% yield within 1 hour. The superior reactivity of diaryl ketone was observed over monoaryl carbonyl compounds and analyzed
开发了方便的吡啶-硼基自由基介导的二芳基酮的频哪醇偶联。与需要灵敏的还原金属的常规频哪醇偶联相反,当前的方法采用稳定的二硼试剂和吡啶路易斯碱催化剂来生成酮基。新开发的方法操作简单,可以在1小时内以极高的效率生产所需的二醇,产率高达99%。观察到二芳基酮的反应性优于单芳基羰基化合物,并通过DFT计算进行了分析,这表明两个芳环对于最大稳定过渡态的必要性。