Cyclization of vicinal acetylenylaminopyrazoles

Abstract

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 language	English
Pages (from-to)	626-628
Number of pages	3
Journal	Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
Volume	32
Issue number	3
DOIs	https://doi.org/10.1007/BF00953123
Publication status	Published - 1 Mar 1983
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)

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10.1007/BF00953123

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title = "Cyclization of vicinal acetylenylaminopyrazoles",

abstract = "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.",

author = "Vasilevskii, {S. F.} and Anisimova, {T. V.} and Shvartsberg, {M. S.}",

year = "1983",

month = mar,

day = "1",

doi = "10.1007/BF00953123",

language = "English",

volume = "32",

pages = "626--628",

journal = "Russian Chemical Bulletin",

issn = "0568-5230",

publisher = "Consultants Bureau",

number = "3",

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TY - JOUR

T1 - Cyclization of vicinal acetylenylaminopyrazoles

AU - Vasilevskii, S. F.

AU - Anisimova, T. V.

AU - Shvartsberg, M. S.

PY - 1983/3/1

Y1 - 1983/3/1

N2 - 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.

AB - 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.

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U2 - 10.1007/BF00953123

DO - 10.1007/BF00953123

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JF - Russian Chemical Bulletin

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