A Versatile Ligand Platform that Supports Lewis Acid Promoted Migratory Insertion
A helping hand: Incorporation of Group 2 Lewis acids into a macrocycle appended to a phosphine ligand attached to a rhenium carbonyl complex promotes otherwise unfavorable transformations of coordinated CO (see scheme; M=Ca, Sr). These Lewis acids form relatively weak M-O bonds, thereby enabling release of organic products from the metal center.
Additional Information© 2012 Wiley-VCH Verlag. Received: April 27, 2012. Published online: July 6, 2012. This work was supported by BP through the XC2 program. We thank Larry Henling and Michael Day for assistance with crystallography.
Supplemental Material - anie_201203264_sm_miscellaneous_information.pdf