85094-07-1Relevant articles and documents
Condensation of pyrazol-5-ones unsubstituted in the position 1 with β-keto esters. Synthesis of pyrano[2,3-c]pyrazol-6-ones
Nam,Grandberg
, p. 387 - 392 (2007/10/03)
The thermal condensation of β-keto esters and N-unsubstituted pyrazol-5-ones gives good yields of pyrano[2,3-c]pyrazol-6-ones. Other potential routes for the condensation are not realized. The β-diketones react via another scheme to form noncyclic reactio