1383974-57-9Relevant academic research and scientific papers
Unusual course of the reaction of Lawesson's reagent with β-phosphoryl-β'-carbethoxyhydrazones: First synthesis of 5-mercapto-3-(methylthiophosphoryl) pyrazoles
Chebil, Emna,Touil, Soufiane
experimental part, p. 320 - 324 (2012/10/07)
It is well known that Lawesson's reagent (LR) reacts with hydrazone derivatives at 80 °C to yield 3-thioxo-1,2,3-diazaphospholine derivatives. We show, in the present investigation, that the reaction of LR with β-phosphoryl-β'-carbethoxyhydrazones under the same conditions, took an entirely different course and gave a new type of pyrazole derivatives, the 5-mercapto-3-(methylthiophosphoryl)pyrazoles.
