Abstract
A novel series of pyrazole derivatives containing substituted phenylsulfinyl/sulfonyl group have been synthesized via the oxidation of intermediate pyrazole sulfoether with H2O2 in acetic acid. The novel compounds were characterized by melting point, 1H NMR, FT-IR, MS, and elemental analysis or HRMS. The biological activity results showed that most of the title compounds exhibit significant fungicidal activities against Alternaria solani Sorauer, Phytophthora capsici, and Corynespora cassiicola.
[Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental files: Additional text and figures.]
GRAPHICAL ABSTRACT
Acknowledgments
This work was supported by the National Basic Research Program of China (No. 21372133), the National Key Technologies Research and Development Program (2011BAE06B05-3), and the National Natural Science Foundation of China (No. 21372133). We thank Dr. Yong-Hong Li of the Biological Assay Center, Nankai University, for herbicidal tests of compounds.