Rh(I)-Catalyzed Reaction of Trifluoromethylketone <i>N</i>
-Tosylhydrazones and Arylboronates
作者:Zhikun Zhang、Weizhi Yu、Qi Zhou、Tianjiao Li、Yan Zhang、Jianbo Wang
DOI:10.1002/cjoc.201500889
日期:2016.5
Rh(I)‐Catalyzed synthesis of 1,1‐difluoro‐2,2‐diarylalkenes from trifluoromethylketone N‐tosylhydrazones and arylboronates is presented in this communication. This new synthetic method is based on the Rh(I)‐carbene migratory insertion followed by β‐fluoride elimination. In one particular case the protonation occurs instead of β‐fluoride elimination, affording 2,2‐diaryl trifluoroethane product.
本通讯介绍了由三氟甲基酮N-甲苯磺酰基hydr和芳基硼酸酯进行Rh(I)催化的1,1-二氟-2,2-二芳基烯烃的合成。这种新的合成方法基于Rh(I)-卡宾迁移插入,然后消除β-氟化物。在一种特定情况下,发生质子化而不是消除β-氟化物,得到2,2-二芳基三氟乙烷产物。