An effective strategy for the preparation of (α, β-unsaturated hydrazones and pyrazole derivatives. Synthetic applications of β-functionalized phosphorus compounds.
F Palacios, D Aparicio, M Jesús
文献索引：Palacios, Francisco; Aparicio, Domitila; Santos, Jesus M. de los Tetrahedron, 1994 , vol. 50, # 44 p. 12727 - 12742
β-Enehydrazino phosphonium salts 3 as web as β-hydrazano phosphine oxides 6 and phosphonates 7 are obtained from hydrazines, propargylphosphonium salts 2 and phosphorylated allenes 4 and 5. β-Functionalized compounds 3, 6 and 7 are used for the synthesis of α, β-unsaturated hydrazones 1, pyrazoline 14 and pyrazole derivative 15.
