Synthesis p. 845 - 848 (1991)
Update date:2022-07-31
Topics:
Magedov
Smushkevich
A new preparative method is reported for the synthesis of 4,5-disubstituted 1,2-dimethyl-1H-pyrazol-3(2H)-ones 5a-e,g-k from N,N-diacyl-N,N'-dimethylhydrazines 1a-e,g,h,j,k. The method is based on the intramolecular formation of thc 4,5-bond in the pyrazo
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