Synthesis of rare-earth metal complexes with a morpholine-functionalized β-diketiminato ligand and their catalytic activities towards C–O and C–N bond formation
作者:Xiancui Zhu、Jinqiang He、Yuanqing Yang、Shuangliu Zhou、Yun Wei、Shaowu Wang
DOI:10.1039/d2dt02053j
日期:——
β-diketiminato rare-earth metal chlorides LRECl(μ-Cl)2Li(THF)2 (RE = Y (1a), Yb (1b), and Lu (1c); L = MeC(NDipp)CHC(Me)N(CH2)2NC4H8O; Dipp = 2,6-iPr2C6H3) and the corresponding dialkyl complexes LRE(CH2SiMe3)2 (RE = Y (2a), Yb (2b), and Lu (2c)) were prepared by reaction of a morpholine-functionalized β-diketiminato proligand HL with anhydrous RECl3 and rare-earth metal trialkyl complexes RE(CH2SiMe3)3(THF)2
稀有三齿 β-二酮亚胺基稀土金属氯化物L RECl(μ-Cl) 2 Li(THF) 2 (RE = Y ( 1a ), Yb ( 1b ), and Lu ( 1c ); L = MeC(NDipp)CHC( Me)N(CH 2 ) 2 NC 4 H 8 O;Dipp = 2,6- i Pr 2 C 6 H 3 ) 和相应的二烷基配合物L RE(CH 2 SiMe 3 ) 2 (RE = Y ( 2a ), Yb ( 2b ) 和 Lu ( 2c)) 分别通过吗啉功能化的 β-二酮亚氨基前配体 H L与无水RECl 3和稀土金属三烷基络合物 RE(CH 2 SiMe 3 ) 3 (THF) 2反应制备。在1和2中,吗啉部分显示出稳定的椅子构象,并且所得配体以 [NNN]-三齿螯合方式与稀土金属离子配位。进一步的研究表明,这些二烷基配合物在异硫氰酸酯的醇解和环氧化物的氨解中对 C-O 和 C-N