Regiochemical Control by Remote Substituents - A Selective Synthesis of Angularly Fused Ring Systems
作者:George A. Kraus、Ning Zhang、Jing Qiang Wei、Jan H. Jensen
DOI:10.1002/ejoc.200500202
日期:2005.7
Diels–Alder reactions of quinones 4, 7, and 15 exhibit remarkable regioselectivity. In contrast, the Diels–Alder reaction of quinone 12 showed no regioselectivity, indicating that the regioselectivities are due to electronic interactions. The selectivity is nicely explained using molecular electrostatic potentials. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
醌 4、7 和 15 的 Diels-Alder 反应表现出显着的区域选择性。相比之下,醌 12 的 Diels-Alder 反应没有显示区域选择性,表明区域选择性是由于电子相互作用。使用分子静电势可以很好地解释选择性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)