Copper electron-transfer induced trifluoromethylation with methyl fluorosulphonyldifluoroacetate
作者:Qing-Yun Chen、Guo-Ying Yang、Sheng-Wen Wu
DOI:10.1016/s0022-1139(00)82357-x
日期:1991.12
Treatment of halogen compounds, RX, with methyl fluorosulfonyldifluoroacetate and copper powder in dimethylformamide for 4 h at 65-80-degrees-C resulted in the corresponding trifluoromethylated products, RCF3, in good yield. In the absence of halogen compounds and at 100-degrees-C, methyl triflone (CF3SO2CH3) was synthesized readily in 20-30% yield from the same reaction system. The fact that the reaction was suppressed by oxygen, p-dinitrobenzene or in darkness suggested that a copper-induced electron-transfer process was involved in this new trifluoromethylating system.
CHEN, QING-YUN;WU, SHENG-WEN, J. CHEM. SOC. CHEM. COMMUN.,(1989) N1, C. 705-706