期刊
TETRAHEDRON
卷 64, 期 46, 页码 10546-10551出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.08.088
关键词
-
资金
- DGICYT [CTQ2006-06741/BQU]
- Comunidad Autonoma de Madrid [CCG07-UAM/PPQ-1709]
The reactions of diazomethane, diazoethane, and (trimethylsilyl)diazomethane with (S)-2-p-tolylsulfinylcyclopent-2-en-1-one have been studied. The sulfinyl group increases the reactivity and controls the pi-facial and endo/exo selectivities. The pi-facial selectivity can be inverted in the presence of Yb(OTf)(3), which makes possible the stereodivergent synthesis of both diastereoisomeric pyrazolines. Completely stereoselective denitrogenation of optically pure pyrazolines into cyclopropanes was achieved under substoichiometric Yb(OTf)(3) catalysis. (c) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据