167252-45-1Relevant academic research and scientific papers
An Effective Strategy for the Preparation of α,β-Unsaturated Hydrazones and Pyrazole Derivatives. Synthetic Applications of β-Functionalized Phosphorus Compounds.
Palacios, Francisco,Aparicio, Domitila,Santos, Jesus M. de los
, p. 12727 - 12742 (2007/10/02)
β-Enehydrazino phosphonium salts 3 as well as β-hydrazono 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.
A Simple and Efficient Synthesis of α,β-Unsaturated Hydrazones from Functionalized Ylides and Phosphine Oxides
Palacios, Francisco,Aparicio, Domitila,Santos, J. Manuel de los
, p. 3481 - 3484 (2007/10/02)
A simple and very efficient route to α,β-unsaturated hydrazones derived from ketones has been developed.These compounds are obtained through Wittig reaction of the phosphoranes generated "in situ" from 4b-enhydrazino phosphonium salts with aldehydes and olefination reaction of phosphine oxides derived from hydrazines. Key Words: Hydrazones, 1-Azadienes, Phosphorus ylides, Phosphine oxides.
