Synthesis and characterization of hexasubstituted azacryptands
作者:Nicolas De Rycke、Jérôme Marrot、François Couty、Olivier R.P. David
DOI:10.1016/j.tetlet.2010.10.019
日期:2010.12
Using an imine condensation strategy, hexaazacryptands were prepared from an aromatic triamine and various dialdehydes. The global shape of these cages can be modified by simple alkylation of the six nitrogen atoms. The cavity is thus elongated and rendered hydrophobic. (C) 2010 Elsevier Ltd. All rights reserved.
Toward reactant encapsulation for substrate-selectivity
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