Synthesis and ligand chemistry of bis[(2-aryltelluro)ethyl]amine and bis[(2-aryltelluro)ethyl]methylamine—novel (Te, N, Te) donors
作者:Ajai K. Singh、Vinod Srivastava、B.L. Khandelwal
DOI:10.1016/s0277-5387(00)81351-0
日期:1990.1
New tridentate ligands, bis[(2-aryltelluro)ethyl]amine (1 and 2) and bis[(2-aryltelluro)ethyl]methylamine (3 and 4) (aryl = 4-MeOC6H4 or 4-EtOC6H4) were synthesized by the reaction of sodium aryltellurolate with bis(2-chloroethyl)amine and bis(2-chloroethyl)methylamine, respectively, and characterized by molecular weight measurements, elemental analyses, IR, 1H and 13C1H} NMR spectra. Complexes of
新的三齿配体,双[(2-芳基碲基)乙基]胺(1和2)和双[(2-芳基碲基乙基)乙基]甲胺(3和4)(芳基= 4-MeOC 6 H 4或4-EtOC 6 H 4)是通过芳基碲酸钠与双(2-氯乙基)胺和双(2-氯乙基)甲胺反应合成的,并通过分子量测量,元素分析,IR,1 H和13 C 1 H}进行表征NMR谱。MCl 2 ·L(L = 1或2; 通过使配体与HgCl 2,(C 6 H 5 CN)2 PdCl 2和K 2 PtCl 4反应合成M = Hg,Pd或Pt)。发现汞络合物是非离子的和单体的。1 H和13 C 1 H} NMR光谱表明,这些配合物中的配体仅通过两个碲原子配位。发现1和2的钯和铂络合物在硝基苯中是抗磁性的,单体的和非离子的。然而,由于溶剂分解,它们在乙腈和甲醇中表现出电导。1 H和13C 1 H}(仅记录1个)的NMR光谱表明,1和2在钯和铂配合物中充当三齿配体
Palladium(ii)-(E,N,E) pincer ligand (E = S/Se/Te) complex catalyzed Suzuki coupling reactions in water via in situ generated palladium quantum dots
作者:Satyendra Kumar、Gyandshwar K. Rao、Arun Kumar、Mahabir P. Singh、Ajai Kumar Singh
DOI:10.1039/c3dt51658j
日期:——
Suzuki–Miyaura coupling (SMC) of various aryl bromides with phenylboronic and 4-formyl/acetyl phenylboronic acid in water using 2–3 mol% of each of the complexes 1–3 have been found good. Complexes 1 and 2 show better catalytic activity than 3, as higher yields were observed with them in a relatively short time. The couplingreactions appear to be catalyzed with Pd(0) nanoparticles (NPs) generated
(E,N,E)钳位配体(ArECH 2 CH 2)2 NH(L1 / L2:Ar = Ph,E = S / Se; L3:Ar = CH 3 O- p -C 6 H 4,E = TE)由PHS的反应合成- / PHSE - / CH 3 O- p -C 6 H ^ 4碲-与双(2-氯乙基)胺用Na反应2的PdCl 4在含水乙醇,从而导致近正方形的平面反磁性配合物[ Pd(L)Cl] Cl(1-3),其中L = L1-L3。所有配体(L1-3)和它们的配合物(1-3)均已通过1 H,13 C 1 H},77 Se 1 H}和125 Te 1 H} NMR光谱和高分辨率质谱进行了表征。2和3的单晶结构(由X射线衍射确定)已解决(Pd–Se:2.4104(5)/2.4222(6)Å; Pd–Te:2.560(2)/2.588(2)Å)。已发现水中的各种芳基溴与苯硼酸和4-甲酰基/乙酰
Design and synthesis of organochalcogen (Se or Te) based multifunctional derivatives: structural determination and dynamic behavior of 2-chloro-4,6-bis(phenylselenoethylamino)-1,3,5-triazines
作者:Marilyn Daisy Milton、Naveen Kumar、Sarbjot Singh Sokhi、Sarika Singh、Monika Maheshwari、Jai Deo Singh、Minakshi Asnani、Raymond J. Butcher
DOI:10.1016/j.tetlet.2004.09.132
日期:2004.11
A novel class of multifunctional and multinucleate chalcogen (selenium and tellurium) containing derivatives (1–10) has been developed based on sequential chloride substitution of 2,4,6-trichloro-1,3,5-triazine with chalcogen-bearing amines. The structure of compound 1 has been determined in the solid state by X-ray crystallography.