期刊
TETRAHEDRON LETTERS
卷 44, 期 32, 页码 6129-6132出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(03)01460-6
关键词
asymmetric hetero-Diels-Alder reaction; chiral rare earth metal phosphate; Lewis acid catalyst; reusable catalyst
Two types of novel rare earth (RE) complexes were synthesized and used as a chiral Lewis acid catalyst for the hetero-Diels-Alder reaction of carbonyl compounds with the Danishefsky's diene under homogeneous conditions. The Y[(R)-H-8-BNP](3) (3-Y)-catalyzed reaction of aromatic aldehydes and the Yb[(R)-BNP](3) (1-Yb)-catalyzed reaction of phenylglyoxylates afforded the corresponding cycloadducts with excellent optical purities (up to 99% ee) in high yields at room temperature. The successful recycling uses of the scandium catalyst (3-Sc) are also described. (C) 2003 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