A Highly Reactive Titanium Precatalyst for Intramolecular Hydroamination Reactions
作者:Lutz Ackermann、Robert G. Bergman
DOI:10.1021/ol0256724
日期:2002.5.1
[GRAPHIC]Tetrakisamido titanium complexes are significantly more active than Cp2TiMe2 (1) in the intramolecular hydroamination of aminoalkynes and aminoallenes. In the latter case, the regioselectivity of the transformation depends on the nature of the precatalyst, yielding the most selective and reactive catalysis with the bis(sulfonamido) complex 11.