(1R,2R)-(+)-(1,2)-DPEN-Bonded Sulfonic Acid Resin: A Trifunctional Heterogeneous Catalyst for Asymmetric Michael Additions of Acetone to Nitroolefins
作者:Chao Zhang、Jing Li、Jun Tian、Wangwang Fang、Yang Li、Ligong Chen、Xilong Yan
DOI:10.1080/00397911.2015.1014499
日期:2015.5.19
Abstract Based on (1R,2R)-(+)-(1,2)-DPEN skeleton, a series of primary amine–sulfamide bifunctional catalysts were synthesized, which exhibited excellent catalytic performance in the Michael addition of acetone to β-nitrostyrene. Therefore, a trifunctional heterogeneous catalyst was designed and prepared by simple N-sulfonyl reaction of (1R,2R)-(+)-(1,2)-DPEN and sulfonyl chloride resin. It was employed for
摘要 基于(1R,2R)-(+)-(1,2)-DPEN骨架,合成了一系列伯胺-磺酰胺双功能催化剂,在丙酮与β-硝基苯乙烯的迈克尔加成反应中表现出优异的催化性能。因此,通过(1R,2R)-(+)-(1,2)-DPEN与磺酰氯树脂的简单N-磺酰基反应,设计并制备了一种三官能多相催化剂。将其用于上述添加而没有任何添加剂,并获得了令人满意的结果(80.5% 转化率;84.3% ee)。同时,通过红外光谱(FT-IR)、元素分析、SEM和N2吸附和解吸实验对催化剂的结构和织构特性进行了表征。最后,考察了催化剂的通用性。图形概要