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.
诱人的反应性:已经制备,表征了新的单和双(氨基甲酸酯)-钽配合物,并将其用于仲胺的催化α-烷基化(参见方案)。观察到自发的β-氢提取为第一个具有催化活性的tantallaaziridine配合物提供了充分表征的实例。