reaction among arylhydrazine, alkyl acetoacetate derivatives, alkyl isocyanides, and dialkyl acetylenedicarboxylates, leading to the formation of dialkyl 2-[(Z)-(alkylamino)(3-alkyl-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene)methyl] fumarates is described. The structure of target compounds was confirmed using X-ray diffraction study. These pyrazolone derivatives contain a highly twisted exocyclic
摘要 芳基
肼、
乙酰乙酸烷基酯衍
生物、烷基异
氰化物和
乙炔二
羧酸二烷基酯之间的四组分反应,导致形成 2-[(Z)-(烷基
氨基)(3-烷基-5-氧代-1-苯基-1 ,5-二氢-4H-
吡唑-4-亚基)甲基]
富马酸酯被描述。使用X射线衍射研究证实了目标化合物的结构。这些
吡唑啉酮衍
生物含有高度扭曲的环外
1,3-丁二烯部分,具有倾斜 (φ = 87°) 几何形状。图形概要