Chemistry of Heterocyclic Compounds p. 540 - 543 (1994)
Update date:2022-09-26
Topics:
Grandberg, I. I.
Nam, N. L.
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).
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