A facile and convenient synthesis of 5-trifluoromethyl-4-pyridazinones from aldehyde dialkylhydrazones
作者:Yasuhiro Kamitori、Masaru Hojo、Ryoichi Masuda、Toshiaki Ikemura、Yoshiko Mori
DOI:10.1016/s0040-4039(00)60696-2
日期:1993.8
Several 5-trifluoromethyl-4-pyridazinones were conveniently synthesized by silica gel-mediated cyclization reaction of 1,1,1,2,2-pentafluoroalkan-3,4-dione 4-dialkylhydrazones prepared from aldehyde dialkylhydrazones and pentafluoropropionic anhydride.
通过由乙二醛二烷基hydr和五氟丙酸酐制备的1,1,1,2,2-五氟烷-3,4-二酮4-二烷基hydr的硅胶介导的环化反应,可以方便地合成几种5-三氟甲基-4-吡啶酮酮。