作者:Florent Allais、Rémy Angelaud、Boris Camuzat-Dedenis、Karine Julienne、Yannick Landais
DOI:10.1002/ejoc.200390157
日期:2003.3
Desymmetrisation of silylcyclopenta-2,4-diene was carried out by an asymmetric copper(I)-mediated cyclopropanation. An in-depth investigation with various ligands led to the discovery that the PyBox ligands 10a−c were the most efficient ligands for this transformation and led to the cyclopropane 7a with an ee of up to 72%. Further studies aimed at providing insights into the origin of this enantiocontrol
甲硅烷基环戊二烯-2,4-二烯的去对称化是通过不对称铜(I)介导的环丙烷化反应进行的。对各种配体的深入研究发现 PyBox 配体 10a-c 是这种转化最有效的配体,并导致环丙烷 7a 的 ee 高达 72%。还提供了旨在深入了解这种对映控制起源的进一步研究。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)