167281-89-2Relevant academic research and scientific papers
NEW TYPE OF CONDENSATION OF 5-PYRAZOLONES UNSUBSTITUTED AT THE NITROGEN
Grandberg, I. I.,Nam, N. L.
, p. 540 - 543 (1994)
1,5-Tripyrazolylenes were prepared with satisfactory yields by the reaction of 5-pyrazolones unsubstituted at the nitrogen atom with an equimolar amount of POCl3 in open vessels together with 5-chloro derivatives (Michaelis reaction).
