Novel supramolecular organocatalysts of hydroxyprolinamide based on calix[4]arene scaffold for the enantioselective Biginelli reaction
作者:ZhengYi Li、HuaiJie Xing、GuoLi Huang、XiaoQiang Sun、JuLi Jiang、LeYong Wang
DOI:10.1007/s11426-011-4374-z
日期:2011.11
A series of novel supramolecular organocatalysts of hydroxyprolinamide based on the upper rim of calix[4]arene scaffold have been developed to catalyze enantioselective multi-component Biginelli reaction. Under the optimal conditions, the reactions occurred with moderate-to-excellent enantioselectivities (up to 98% ee). A plausible transition state constructed by the supramolecular interaction of hydrogen bond and cation-π between catalysts and substrates has been proposed.
一系列基于四甲基源的羟基脯氨酸酰胺新型超分子有机催化剂已经被开发出来,用于催化手性选择性的多组分比吉内利反应。在最佳条件下,反应表现出中等到优异的手性选择性(最高可达98% ee)。提出了一种合理的过渡态,其中催化剂与底物之间的氢键和阳离子-π的超分子相互作用被构建。