Bisxantphos: Stereoselective synthesis and coordination behaviour of a new class of cyclic double bridged diphosphines
作者:René den Heeten、Erik Zuidema、Martin Lutz、Anthony L. Spek、Piet W.N.M. van Leeuwen、Paul C.J. Kamer
DOI:10.1016/j.jorganchem.2011.06.019
日期:2011.9
A newclass of cyclic double bridged diphosphineligands was developed and the coordination properties are described. The reaction of 4,5-dilithioxanthene with dichlorophenylphosphine gave a cyclic double bridged diphosphineligand based on two xanthene backbones (4) as a single stereoisomer. X-ray crystal structure determination revealed that the groups bridging the two phosphorus atoms are arranged