Broadening the Scope of Group 4 Hydroamination Catalysis Using a Tethered Ureate Ligand
作者:David C. Leitch、Philippa R. Payne、Christine R. Dunbar、Laurel L. Schafer
DOI:10.1021/ja906955b
日期:2009.12.30
A broadly applicable group-4-based precatalyst for the hydroamination of primary and secondary amines was developed. Screening experiments involving a series of amide and urea proligands led to the discovery of a tetheredbis(ureate) zirconium complex with unprecedented reactivity in the intermolecular hydroamination of alkynes and the intramolecularhydroamination of alkenes. This catalyst system is