New optically active pyrazoles: Syntheses and the structural characterization of menthopyrazole analogues

被引：8
|
作者：
Kashima, C [1 ]
Miwa, Y [1 ]
Shibata, S [1 ]
Nakazono, H [1 ]
机构：
[1] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan
来源：
JOURNAL OF HETEROCYCLIC CHEMISTRY | 2002年 / 39卷 / 06期
关键词：
D O I：
10.1002/jhet.5570390618
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
New chiral pyrazoles, (4R,7R)-4-methyl-7-isopropyl-3-phenyl- (3-phenylisomenthopyrazole; cis-1), (4R,7S)-4-methyl-7-isopropyl- (1-menthopyrazole; trans-2), (4R,7R)-4-isopropyl-7-methyl- (isocarvomenthopyrazole, cis-3) and (4R,7S)-4-isopropyl-7-methyl-4,5,6,7-tetrahydro-1H-indazole (carvomenthopyrazole, trans-3) were prepared. The diastereomeric pairs of these 1-3 were structurally characterized by NMR spectroscopy. The subtle differences of structures of 1-3 should induce the useful effects for a chiral auxiliary or a chiral catalyst.
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收藏
页码：1235 / 1240
页数：6
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