铑（I）催化的分子内[4 + 2]环加成反应中立体选择性的底物控制
Substrate control of stereoselection in the rhodium(I) catalyzed intramolecular [4 + 2] cycloaddition reaction.
作者信息
O'Mahony Donogh J R, Belanger David B, Livinghouse Tom
机构信息
Department of Chemistry, Montana State University, Bozeman, MT 59717, USA.
出版信息
Org Biomol Chem. 2003 Jun 21;1(12):2038-40. doi: 10.1039/b302426c.
DOI:10.1039/b302426c
PMID:12945892
Abstract
The Rh(I) catalyzed intramolecular [4 + 2] cycloaddition of representative achiral and chiral enedienes has been shown to proceed with excellent levels of stereoselectivity and in high yield under mild reaction conditions. In contrast, the corresponding noncatalyzed cycloadditions for three substrates in the latter category require higher temperatures and exhibit low levels of stereocontrol.
摘要
已表明，铑（I）催化的代表性非手性和手性烯二烯的分子内[4 + 2]环加成反应在温和的反应条件下以优异的立体选择性水平和高收率进行。相比之下，后一类中三种底物的相应非催化环加成反应需要更高的温度，并且立体控制水平较低。
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