title: Cracking cavitands: metal-directed scission of phosphinyl-substituted resorcinarenes.
abstract: Resorcinarene-derived tetramethylene cavitands bearing a diphenylphosphino group grafted to their wider rim undergo facile, directed C-O bond breaking upon reaction with transition-metal ions in the presence of nucleophiles. One possible reaction mechanism involves formation of a P,O-chelate complex, which weakens the adjacent O-CH2 bond, leading to the formation of an oxacarbenium intermediate.
authors: Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg cedex (France).
authors: Thierry
authors: T
authors: Chavagnan
authors: David
authors: D
authors: Sémeril
authors: Dominique
authors: D
authors: Matt
authors: Jack
authors: J
authors: Harrowfield
authors: Loïc
authors: L
authors: Toupet
keywords: P,O-chelates; cavitands; ethylene oligomerisation; hybrid phosphanes; nickel; resorcinarenes