New Yttrium Complexes Bearing Diamidoamine Ligands as Efficient and Diastereoselective Catalysts for the Intramolecular Hydroamination of Alkenes and Alkynes
作者:Kai C. Hultzsch、Frank Hampel、Thomas Wagner
DOI:10.1021/om030679q
日期:2004.5.1
amine donor and coordinated THF molecule in [Y(Mes2N2NMe)N(SiHMe2)2}(THF)] and both amine donors in [Y(2,6-Et2C6H3)2N2NMe}(o-C6H4CH2NMe2)] occupy axial positions. All complexes catalyze intramolecular hydroamination of aminoalkynes and aminoalkenes. Those having bis(trimethylsilyl)amido or (o-C6H4CH2NMe2) ligands show significantly higher activity than the complex containing the bis(dimethylsilyl)amido
新的二氨基胺钇配合物[Y(Mes 2 N 2 NMe)N(SiHMe 2)2 }(THF)](Mes 2 N 2 NMe 2 - =(2,4,6-Me 3 C 6 H 2 NCH 2 CH 2)2 NMe 2 -),[Y(Ar 2 N 2 NMe)N(SiMe 3)2 }]和[Y(Ar 2 N 2 NMe)(o -C 6 H 4 CH 2 NMe 2)](氩2 Ñ 2 NME 2 - =(ArNCH 2 CH 2)2 NME 2 -用Ar = 2,4,6-ME 3 c ^ 6 ħ 2,2,6-的Et 2 ç 6 ħ 3,2,从相应的三酰胺基或三芳基钇配合物开始,通过转氨或消除芳烃反应制备6-Cl 2 C 6 H 3)。[Y(Mes 2 N 2 NMe)N(SiHMe 2)2 }(THF)]和[Y (2,6-Et 2X射线晶体学显示C 6 H 3)2 N 2 NMe}(o -C 6 H