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Paper | Special issue | Vol 42, No. 1, 1996, pp.241-250
Published online, 1st January, 1970
DOI: 10.3987/COM-95-S14
Diastereomeric Preparation of α- and β-Phenylthio Substituted N-Acylpyrazoles

Choji Kashima, Katsumi Takahashi, and Akira Hosomi

*Department of Chemistry, University of Tsukuba, 1-1-1 Ten-nodai, Tsukuba-shi, Ibaraki, 305-8571, Japan

Abstract

When 3-phenyl-l-menthopyrazole was used as a chiral auxiliary, the diastereomeric preparation of α- and β-phenylthio-substituted N-acylpyrazoles (4 and 9) was accomplished in high yield by the α-sulfenylation using diphenyl disulfide and the conjugate addition of thiophenol, respectively.