Vovk, M. V. et al. published their research in Chemistry of Heterocyclic Compounds in 2002 |CAS: 36640-53-6

The Article related to isocyanatonaphthylphenylpyrazole intramol cyclization friedel crafts condition, benzopyrazoloisoquinoline preparation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazoles and other aspects.Formula: C20H14N2O

On September 30, 2002, Vovk, M. V.; Mel’nichenko, N. V.; Chornous, V. A.; Bratenko, M. K. published an article.Formula: C20H14N2O The title of the article was Intramolecular cyclization of 4-isocyanato-3-(2-naphthyl)-1-phenylpyrazole under friedel-crafts reaction conditions. And the article contained the following:

4-Isocyanato-3-(2-naphthyl)-1-phenylpyrazole cyclized under the influence of AlCl3 to give 2H-benzo-[h]pyrazolo[4,3-c]isoquinoline. The experimental process involved the reaction of 3-(Naphthalen-2-yl)-1-phenyl-1H-pyrazole-4-carbaldehyde(cas: 36640-53-6).Formula: C20H14N2O

The Article related to isocyanatonaphthylphenylpyrazole intramol cyclization friedel crafts condition, benzopyrazoloisoquinoline preparation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazoles and other aspects.Formula: C20H14N2O

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics