Abstract
N-Substituted pyrazoles with a free 4-position on the ring and not containing electron-acceptor substituents easily react with o-chlorobenzenesulfonylisocyanate according to an electrophilic substitution scheme, forming 4-o-chlorobenzenesulfonylcarbamoyl derivatives.
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N. L. Nam, I. I. Grandberg, and V. I. Sorokin, Khim. Geterotsikl. Soedin., No. 1, 45 (1994).
A. N. Kost and I. I. Grandberg, Adv. Heterocyclic Chem.,6, 157 (1966).
R. Graf, Lieb. Ann.,661, 111 (1963).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 210–213, February, 1996.
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Nam, N.L., Grandberg, I.I. & Sorokin, V.I. C-acylation of pyrazole and its derivatives byo-chlorobenzenesulfonylisocyanate. Chem Heterocycl Compd 32, 186–188 (1996). https://doi.org/10.1007/BF01165443
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DOI: https://doi.org/10.1007/BF01165443