Group 4 Complexes Bearing Pyrrolide Ligand for Intramolecular Alkene Hydroamination and Activation of C≡N Bond
作者:Zhilei Jiang、Yalan Wang、Wei Liu、Yahong Li
DOI:10.1002/zaac.201800109
日期:2018.8.16
Titanium and zirconium complexes supported by a pyrrolide ligand HL1 [HL1 = 2‐cyano‐1H‐pyrrole], Ti2(L2)2(NMe2)2 (1) and Zr3(L2)3(NMe2)6 (2) [L2 = N,N‐dimethyl‐1H‐pyrrol‐2‐carboximidamide, NMe2‐L1] were synthesized and characterized. The ligand L2 was generated by activation of C≡N bond of HL1 with HNMe2. In complex 1, two TiIV atoms are bridged by two nitrogen atoms. There are three characteristic
吡咯配体HL 1 [HL 1 = 2-氰基-1H-吡咯],Ti 2(L 2)2(NMe 2)2(1)和Zr 3(L 2)3(NMe 2)支撑的钛和锆配合物)6(2)[L 2 = N,N-二甲基-1H-吡咯-2-碳亚酰胺,NMe 2 -L 1 ]合成并表征。配体L 2通过激活HL 1的C≡N键生成使用HNMe 2。在络合物1中,两个Ti IV原子被两个氮原子桥接。有三个特性的Zr IV离子2,其是六,七和分别六配位,。它们被测试为氨基烯烃分子内加氢胺化的催化剂,各自的N-杂环化合物的收率为74–99%。此外,L 2配体的形成表明C≡N键的胺化可被认为是合成其他C–N键的一种新的快速方法。