A New Practical and Convenient Access to the Synthesis of N,N-Dialkyl-3,3,3-trifluoropropanamides
作者:Hiroki Yamanaka、Toshiya Mantani、Keisuke Shiomi、Takashi Ishihara
DOI:10.1246/cl.1998.615
日期:1998.7
3-trifluoropropanamides were readily synthesized in good to excellent yields through N,N-dialkyl(3,3,3-trifluoro-1-propynyl)amines, which were generated by the reaction of N,N-dialkyl(2,2,3,3,3-pentafluoropropyl)- or -(2,3,3,3-tetrafluoro-1-propenlyl)amines with lithium diisopropylamide in the presence or absence of N,N′-dimethylpropyleneurea at room temperature or 0 °C.
N,N-二烷基-3,3,3-三氟丙酰胺很容易通过 N,N-二烷基(3,3,3-三氟-1-丙炔基)胺以良好的收率合成,N,N-二烷基(3,3,3-三氟-1-丙炔基)胺是由 N ,N-二烷基(2,2,3,3,3-五氟丙基)-或-(2,3,3,3-四氟-1-丙烯基)胺与二异丙基氨基锂在N,N'-存在或不存在下二甲基丙烯脲在室温或 0 °C。