Calixarene metalloreceptor. Upper-rim functionalized calix[4]arenas containing an organopalladium binding site
Abstract
Calix[4]arene units functionalized at the 1,3-positions of the upper rim with an organopalladium binding site demonstrate simultaneous first- and second-sphere coordination of a substrate through binding to the palladium centre and interaction within the hydrophobic site provided by the calixarene unit.