Tantalum-Amidate Complexes for the Hydroaminoalkylation of Secondary Amines: Enhanced Substrate Scope and Enantioselective Chiral Amine Synthesis
作者:Patrick Eisenberger、Rashidat O. Ayinla、Jean Michel P. Lauzon、Laurel L. Schafer
DOI:10.1002/anie.200903656
日期:2009.10.19
Tantalizing reactivity: New mono‐ and bis(amidate)–tantalum complexes have been prepared, characterized, and used for the catalytic α‐alkylation of secondary amines (see scheme). Spontaneous β‐hydrogen abstraction is observed to give a fully characterized example of the first catalytically active tantallaaziridine complex.