Harmata M, Rashatasakhon P
Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, USA.
Org Lett. 2000 Sep 7;2(18):2913-5. doi: 10.1021/ol006390b.
[reaction: see text] The judicious placement of stereocenters on precursors for 4 + 3 cycloaddition reactions can lead to high levels of stereocontrol in the 4 + 3 cycloaddition process of cyclopentenyl cations and tethered butadienes. This concept was successfully tested in the context of a synthesis of (+)-dactylol.
[反应:见正文] 在4 + 3环加成反应前体上明智地引入立体中心,可在环戊烯基阳离子与相连丁二烯的4 + 3环加成过程中实现高度的立体控制。这一概念在(+)-达克罗醇的合成中得到了成功验证。