Influence of base additives on the selectivity of palladium-catalysed aminocarbonylation: Highly selective functionalization of a cavitand scaffold
作者:Zoltán Nagymihály、Zsolt Csók、László Kollár
DOI:10.1016/j.mcat.2017.10.031
日期:2018.1
Tetracarboxamides and tetrakis(2-ketocarboxamides) of resorcinarene-based cavitands have been synthesised in palladium-catalysed aminocarbonylation of the corresponding tetraiodocavitand. In this way, deepened cavitands with the same functionalities at the upper rim were obtained even in the simultaneous application of two primary amines as N-nucleophiles. The influence of base additives on the unexpectedly high chemoselectivity towards tetra-functionalised products, i.e. tetrakis(2-ketocarboxamides) and tetracarboxamides, has been investigated in details. (C) 2017 Elsevier B.V. All rights reserved.