<i>N</i>-Heterocyclic Carbene-catalyzed Difluorocarbene Generation and its Application to Aryl Difluoromethyl Ether Synthesis
作者:Kohei Fuchibe、Yuta Koseki、Hisashi Sasagawa、Junji Ichikawa
DOI:10.1246/cl.2011.1189
日期:2011.10.5
NHC-catalyzed generation of difluorocarbene from trimethylsilyl 2,2-difluoro-2-(fluorosulfonyl)acetate (TFDA) enables the synthesis of enol difluoromethyl ethers starting from cyclohexenones and tetralones. The resultant enol difluoromethyl ethers were successively dehydrogenated with DDQ to furnish aryl difluoromethyl ethers in good to high yield.
在 NHC 催化下,从 2,2-二
氟-2-(
氟磺酰基)
乙酸三甲基
硅酯 (TFDA) 生成二
氟碳,从而能够从
环己烯酮和四氢
萘酮合成烯醇二
氟甲基醚。得到的烯醇二
氟甲基醚依次与
DDQ 进行脱氢反应,生成芳基二
氟甲基醚,收率从好到高。