p-Toluenesulphonic acid-promoted, I2-catalysed sulphenylation of pyrazolones with aryl sulphonyl hydrazides

Xia Zhao; Lipeng Zhang; Tianjiao Li; Guiyan Liu; Haomeng Wang; Kui Lu

doi:10.1039/C4CC05237D

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p-Toluenesulphonic acid-promoted, I₂-catalysed sulphenylation of pyrazolones with aryl sulphonyl hydrazides†

Xia Zhao,*^a Lipeng Zhang,^a Tianjiao Li,^a Guiyan Liu,^a Haomeng Wang^a and Kui Lu*^b

Author affiliations

* Corresponding authors

^a College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
E-mail: hxxyzhx@mail.tjnu.edu.cn

^b College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
E-mail: lukui@tust.edu.cn

Abstract

Aryl pyrazolone thioethers were synthesized via the I₂-catalysed cross-coupling of pyrazolones with aryl sulphonyl hydrazides in the presence of p-toluenesulphonic acid, which has been proposed to promote the reaction by facilitating the decomposition of sulphonyl hydrazides.

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Article information

DOI: https://doi.org/10.1039/C4CC05237D
Article type: Communication
Submitted: 08 Jul 2014
Accepted: 26 Aug 2014
First published: 01 Sep 2014

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Chem. Commun., 2014,50, 13121-13123

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p-Toluenesulphonic acid-promoted, I₂-catalysed sulphenylation of pyrazolones with aryl sulphonyl hydrazides

X. Zhao, L. Zhang, T. Li, G. Liu, H. Wang and K. Lu, Chem. Commun., 2014, 50, 13121 DOI: 10.1039/C4CC05237D

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Chemical Communications