Cyclization of vicinal acetylenylaminopyrazoles

S. F. Vasilevskii, T. V. Anisimova, M. S. Shvartsberg

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


1. 4-Amino-5-acetylenylpyrazoles are capable of isomerizing in the presence of Cu(I) salts, with closure of the pyrrole ring and formation of the condensed pyrrolo[3,2-c]pyrazole system. 2. The 5-amino-4-acetylenylpyrazoles, in contrast to the 4-amino-5-acetylenyl derivatives, and also the o-acetylenylanilines, do not cyclize under analogous conditions.

Original languageEnglish
Pages (from-to)626-628
Number of pages3
JournalBulletin of the Academy of Sciences of the USSR Division of Chemical Science
Issue number3
Publication statusPublished - 1 Mar 1983
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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