作者:Nicolas De Rycke、François Couty、Olivier R.P. David
DOI:10.1016/j.tetlet.2011.11.078
日期:2012.1
reversible imine condensation strategy. Catalytic activity in Henry reactions of the corresponding copper(II) complex was studied. Capitalizing on previous works by Anslyn with related receptors, the dramatic increase in basicity induced by this type of complex on diketo-derivatives was used to perform a nucleophilic addition of a deprotonated substrate onto an electrophile within the cavity. Hence, a Lewis
通过可逆的亚胺缩合策略以优异的产率制备了合成的三-(双-(氨基甲基)吡啶)受体。研究了相应的铜(II)配合物在亨利反应中的催化活性。利用安斯林(Anslyn)与相关受体的先前工作,这种类型的二酮衍生物上的配合物诱导的碱性的急剧增加被用来在腔内将去质子化的底物亲核加成到亲电子体上。因此,路易斯酸稳定的亚硝酸盐与各种醛反应。观察到显着偏爱易于容纳在空腔中的小反应物,而不是笨拙的反应物,因此代表了底物选择性的一个例子。