📜(E)-1,1,1-Trifluoro-4-(N-[(E)-(4-Nitrophenyl)Methylideneamino]Anilino)But-3-En-2-One置于盐酸体系中,用 乙腈 作为反应溶剂,化学反应 1.0H,反应生成 1-苯基-3-三氟甲基吡唑
参考文献:New Strategy For The Regioselective Synthesis Of 1-Phenyl-3-Trifluoromethyl-1H-Pyrazoles
标题:New Strategy For The Regioselective Synthesis Of 1-Phenyl-3-Trifluoromethyl-1H-Pyrazoles
摘要:A Regioselective Synthesis Of 3-Trifluoromethyl-1-Phenyl-1H-Pyrazoles (1,3-Isomers) As Well As Their 1,5-Isomers (5-Trifluoromethyl-1-Phenyl-1H-Pyrazoles),Is Described. The 1,3-Isomers Were Obtained From The Reaction Of 4-Alkoxy-1,1,1-Trifluoroalk-3-En-2-Ones With Arylhydrazones Followed By Deprotective Hydrolysis While The 1,5-Isomer Was Obtained By Direct Cyclocondensation Of 4-Alkoxy-1,1,1-Trifluoroalk-3-En-2-Ones With Phenylhydrazine. An Unequivocal Assignment Of The 1,3-And 1,5-Isomers Of The Pyrazole Products Is Given. (C) 2013 Elsevier Ltd. All Rights Reserved.
DOI:10.1016/j.Tetlet.2013.05.103