Divalent Lanthanide Complexes: Highly Active Precatalysts for the Addition of N−H and C−H Bonds to Carbodiimides
作者:Zhu Du、Wenbo Li、Xuehua Zhu、Fan Xu、Qi Shen
DOI:10.1021/jo801693z
日期:2008.11.21
lanthanide complexes with the formula LnL2(sol)x (L = N(TMS)2, sol = THF, x = 3, Ln = Sm (I), Eu (II), Yb (III); L = MeC5H4, sol = THF, x = 2, Ln = Sm (IV); L = ArO(Ar = [2,6-((t)Bu)2-4-MeC6H2]), sol = THF, x = 2, Ln = Sm (V)), especially complexes I- III, serve as excellent catalyst precursors for catalytic addition of various primary and secondary amines to carbodiimides, efficiently providing the
各种具有式LnL2(sol)x(L = N(TMS)2,sol = THF,x = 3,Ln = Sm(I),Eu(II),Yb(III); L = MeC5H4,溶胶= THF,x = 2,Ln = Sm(IV); L = ArO(Ar = [2,6-((t)Bu)2-4-MeC6H2]),溶胶= THF,x = 2,Ln = Sm(V)),尤其是配合物I-III,是将各种伯胺和仲胺催化加成到碳二亚胺上的极佳催化剂前体,可在无溶剂条件下有效地为相应的胍衍生物提供多种底物。该反应显示出良好的官能团耐受性。配合物I-III也是出色的预催化剂,可将末端炔烃加到碳二亚胺上,产生一系列丙lam基。在两个反应中均观察到Yb