A simple and efficient synthesis of 9-arylfluorenes via metal-free reductive coupling of arylboronic acids and N-tosylhydrazones in situ
作者:Xu Shen、Ningning Gu、Ping Liu、Xiaowei Ma、Jianwei Xie、Yan Liu、Lin He、Bin Dai
DOI:10.1039/c5ra12099c
日期:——
efficient synthesis method of 9-arylfluorenes via metal-freereductive coupling of N-tosylhydrazones and arylboronic acids has been developed. This methodology is realized by a one-pot protocol in two steps involving the preparation of N-tosylhydrazones by reacting tosylhydrazide with 9-fluorenone derivatives, followed by the reductive coupling of arylboronic acid in the presence of potassium carbonate to