Novel sulfonylpolystyrene-supported prolinamides as catalysts for enantioselective aldol reaction in water
作者:Rafael Pedrosa、José M. Andrés、Ana Gamarra、Rubén Manzano、César Pérez-López
DOI:10.1016/j.tet.2013.10.093
日期:2013.12
Five novel prolinamides derived from 1,n-diamines supported on commercially available sulfonylpolystyrene have been synthesized and successfully applied in diastereo- and enantioselective aldol reaction in water or, in one case, neat conditions. Excellent dr and er were obtained by reaction of different cyclohexanone derivatives with aromatic and heteroaromatic aldehydes in the presence of the catalysts
已经合成了五种衍生自负载在市售磺酰基聚苯乙烯上的1,正二胺的五种新型脯氨酰胺,并将其成功地用于水中或在纯净条件下的非对映体和对映体选择性羟醛反应中。在催化剂和以AcOH为助催化剂的情况下,通过不同环己酮衍生物与芳族和杂芳族醛的反应获得了优异的dr和er。负载的有机催化剂在低负荷(5摩尔%)下工作,表现出与均相脯氨酰胺相似的性能,并且在活化后可以重复使用,而不会损失活性。