85963-51-5Relevant articles and documents
Enehydrazines, 34. The Addition of Methylhydrazine to Dimethyl Acetylenedicarboxylate is Reversible
Sucrow, Wolfgang,Bredthauer, Gerhard
, p. 1520 - 1524 (2007/10/02)
The cyclisation of the enehydrazine 1 to the pyrazolone 5 proceeds by cleavage of 1 to its educts 2 and 3 followed by their recombination to 4.Addition of 2 or 3 supresses the dissociation of 1, furthermore 2 and 3 could be separately captured from 1.