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Paper | Special issue | Vol 59, No. 1, 2003, pp.225-235
Published online, 1st January, 1970
DOI: 10.3987/COM-02-S26
The Preparation and Reactions of 2-Acyl-3-Phenylisomenthopyrazole

Choji Kashima,* Yohei Miwa, Takeshi Yokawa, and Saori Shibata

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


3-Phenylisomenthopyrazole (4) was useful as a chiral auxiliary, though the diastereomeric selectivity was lower than those of 3-phenyl-l-menthopyrazole (1a). In α-acylation and the Diels-Alder cycloaddition, the absolute configuration of the predominant products was different from that of the products using 1a.