Jg. Rodriguez et A. Depablo, DIAZOMETHANE 1,3-DIPOLAR CYCLOADDITION TO METHYL-SUBSTITUTED NAPHTAZARIN DIACETATES, Anales de quimica, 91(5-6), 1995, pp. 421-429
1,3-dipolar cycloaddition of diazomethane to methyl substituted naphth
azarins have been carried out. The reaction involves transacetylation
to the N-methyl substituted pyrazole or pyrazoline derivatives.