作者:Peng, Yu-Qing、Li, Yong-Qing、Liu, Miao-Miao、Ni, Chen、Cao, Yu-Cai
DOI:10.1039/d4nj00718b
日期:——
Sterically hindered 2,7-diaryl fluorenes have been efficiently synthesized via double Suzuki–Miyaura cross-coupling reactions of challenging 2,7-dichlorofluorene with a broad range of di-ortho-substituted arylboronic acids using the N-heterocyclic carbene Pd catalyst INPd. The efficiency of chloride-directed reactions is superior to that of bromide-directed reactions. Mechanistic studies revealed a
使用 N-杂环卡宾 Pd 催化剂 INPd,通过具有挑战性的 2,7-二氯芴与多种二邻位取代的芳基硼酸的双 Suzuki-Miyaura 交叉偶联反应,有效合成了位阻 2,7-二芳基芴。氯化物直接反应的效率优于溴化物直接反应。机理研究揭示了铃木-宫浦双交叉偶联反应的串联过程。