Highly Active Dinuclear Titanium(IV) Complexes for the Catalytic Formation of a Carbon–Heteroatom Bond
作者:Jayeeta Bhattacharjee、Adimulam Harinath、Indrani Banerjee、Hari Pada Nayek、Tarun K. Panda
DOI:10.1021/acs.inorgchem.8b01766
日期:2018.10.15
The catalytic efficiency of the dinuclear complex depends on the cooperative effect of the TiIV ions, the systematic variation of the intermetallic distance, and the ligand’s steric properties of the complex, which enhances the reaction rate. Most interestingly, this is the first example of catalytic insertion of various E–H bonds into the carbodiimides using a single-site catalyst because only the titanium-mediated
一系列单核钛(IV)与一般组合物的复合物κ 3 - [R NHPh基2 P(X)} 2的Ti(NME 2)2 ] [R = C ^ 6 ħ 4,X = SE(图3b); R =反式-C 6 ħ 10,X = S(图4a),硒(4B)]和[κ 2 -N(PPH 2 Se)的2 } 2的Ti(NME 2)2 ](图6b)和两个双核钛(IV)配合物,[C 6 H 4 (NPh 2PS)(N)}的Ti(NME 2)] 2(图3c)和κ[ 2 -N PPH(2 Se)中的Ti}(NME 2)2 ] 2(图6C)被报告。双核钛(IV)配合物6c在温和条件下可作为化学选择性将E–H键(E = N,O,S,P,C)加成到杂多烯中的有效催化剂。将脂肪族和芳香族胺,醇,硫醇,氧化膦和乙炔催化加成到碳二亚胺上,可以在温和的条件下以高收率高产率地得到相应的加氢产物。双核络合物的催化效率取决于Ti的协同作用