6H4CH=N-CH2CH2)C8H5]RE[N(SiMe3)2]2(µ-Cl)Li(THF)} (RE = Y(1), Sm(2), Gd(3), Er(4), Yb(5)). By extending the reaction time, only the reaction of HL with [(Me3Si)2N]3Gd(µ-Cl)Li(THF)3 gave an unexpected binuclear rare-earth metal complex [(µ-η5:η1):η1:η1-3-[(Me2N)2-C14H9]-(NCH2CH2-C8H5N)2]Gd2[N(SiMe3)2]3} (6) incorporating a novel polycyclic ligand through C-C and C-N coupling. Treatment of HL with [
亚氨基官能化的吲哚基配体(H L,L = 3-(4-Me 2 N-C 6 H 4 CH = N-CH 2 CH 2)C 8 H 5 N)与稀土金属酰胺的反应[(研究了产生不同类型稀土金属酰胺配合物的Me 3 Si)2 N] 3 RE(µ -Cl)Li(THF)3。H L与1当量的反应。[(Me 3 Si)2 N] 3 RE(µ -Cl)Li(THF)3的原子数产生了一系列的异核双金属稀土类金属的氨基络合物[ η 1:μ - η 2 -3-(4-我2 N-C 6 H ^ 4 CH = N-CH 2 CH 2)C 8 H ^ 5 ] RE [N(SiMe 3)2 ] 2(μ- Cl)Li(THF)}(RE = Y(1),Sm(2),Gd(3),Er(4),Yb(5))。通过延长反应时间,仅H L与[(Me 3 Si)2 N] 3的Gd(μ -Cl)的Li(THF)3,得到意想不到的双核稀土类金属络合物[(μ
Cyclic (Alkyl)amino Carbene Complex of Aluminum(III) in Catalytic Guanylation Reaction of Carbodiimides
作者:Pavan K. Vardhanapu、Varun Bheemireddy、Mrinal Bhunia、Gonela Vijaykumar、Swadhin K. Mandal
DOI:10.1021/acs.organomet.8b00358
日期:2018.8.13
Herein we report the synthesis of a cyclic (alkyl)amino carbene (cAAC) complex of AlMe3. This complex was used as an efficient catalyst for the guanylation reaction of carbodiimides with primary arylamines and secondary amines to deliver guanidine derivatives in good to excellent yields. This catalytic protocol can tolerate a wide range of functional groups. Furthermore, the longevity of the catalyst
Copper oxide supported on magnetic nanoparticles (CuO@γ-Fe<sub>2</sub>
O<sub>3</sub>
): An efficient and magnetically separable nanocatalyst for addition of amines to carbodiimides towards synthesis of substituted guanidines
作者:Sepideh Abbasi、Dariush Saberi、Akbar Heydari
DOI:10.1002/aoc.3695
日期:2017.9
Copper oxide supported on magneticnanoparticles was used as a green magneticnanocatalyst for hydroamination of carbodiimides towards the synthesis of guanidines. Easy preparation and separation, low cost, non‐sensitivity to moisture and reusability of the catalyst along with diversity and high yield of products are significant features of this method.
Heavier Group‐2‐Element Catalyzed Hydroamination of Carbodiimides
作者:Jennifer R. Lachs、Anthony G. M. Barrett、Mark R. Crimmin、Gabriele Kociok‐Köhn、Michael S. Hill、Mary F. Mahon、Panayiotis A. Procopiou
DOI:10.1002/ejic.200800613
日期:2008.9
Abstract The heteroleptic calcium amide [ArNC(Me)CHC(Me)NAr}CaN(SiMe3)2}(THF)] (Ar = 2,6‐diisopropylphenyl) and the homoleptic heavier alkaline earth amides, [MN(SiMe3)2}2(THF)2] (M = Ca, Sr and Ba) are reported as competent pre‐catalysts for the hydroamination of 1,3‐carbodiimides. Whilst the reaction scope is currently limited to reactions of aromatic amines with 1,3‐dialkylcarbodiimides, in most
Construction of oxygen-bridged multimetallic assembly: dual catalysts for hydroamination reactions
作者:Arup Mukherjee、Tamal K. Sen、Swadhin K. Mandal、Bholanath Maity、Debasis Koley
DOI:10.1039/c2ra21778c
日期:——
Herein, we utilized multiple metal centers of a single catalytic system for two different activation processes in hydroamination catalysis. A trimetallic complex, [Cp*2(Me)Zr(μ-O)Zr(NMe2)2(μ-O)Zr(Me)Cp*2] (2) bearing three zirconium(IV) ions bridged by two oxygencenters was synthesized by the reaction of Cp*2(Me)Zr(OH) (Cp* = η5-C5Me5) with Zr(NMe2)4 in a 2 : 1 molar ratio at room temperature. The