Copper(<scp>ii</scp>)-benzotriazole coordination compounds in click chemistry: a diagnostic reactivity study
作者:Edward Loukopoulos、Alaa Abdul-Sada、Gizella Csire、Csilla Kállay、Adam Brookfield、Graham J. Tizzard、Simon J. Coles、Ioannis N. Lykakis、George E. Kostakis
DOI:10.1039/c8dt01256c
日期:——
[CuI4(L1)2(L1′)2(CF3SO3)2]2·4(CF3SO3)·8(Me2CO) (5), derived from similar nitrogen-based ligands. The homogeneous catalytic activity of these compounds along with our previously reported coordinationcompounds (6–13), derived from similar ligands, is tested against the well-known Cu(I)-catalysed azide–alkyne cycloaddition reaction. The optimal catalyst [CuII(L1)2(CF3SO3)2] (10) activates the reaction to afford 1
这项诊断研究旨在阐明基于Cu(II)的配位化合物与苯并三唑基配体的催化活性。我们在这里报告了五个新的配位化合物的合成和表征,它们被配制成[Cu II(L 4)(MeCN)2(CF 3 SO 3)2 ](1),[Cu II(L 5)2(CF 3 SO 3))2 ](2),[Cu II(L 6)2(MeCN)(CF 3 SO 3)]·(CF 3 SO 3)(3),[Cu II(L 6)2(H 2 O)(CF 3 SO 3)]·(CF 3 SO 3)·2(Me 2 CO)(4)和[Cu I 4(L 1)2(L 1')2(CF 3 SO 3)2 ] 2 ·4(CF 3 SO 3)·8(Me 2 CO)(5),衍生自类似的基于氮的配体。这些化合物以及我们先前报道的配位化合物(6-13)的均相催化活性均源自相似的配体,并针对著名的Cu(I)催化的叠氮化物-炔烃环加成反应进行了测试。最佳催化剂[Cu II(L
Structural Diversity and Catalytic Properties in a Family of Ag(I)-Benzotriazole Based Coordination Compounds
作者:Edward Loukopoulos、Alaa Abdul-Sada、Eddy M. E. Viseux、Ioannis N. Lykakis、George E. Kostakis
DOI:10.1021/acs.cgd.8b00960
日期:2018.9.5
their variety coordination abilities. Interestingly, certain structures exhibit an isomerism effect (L1T-L3T) in the benzotriazole unit when in solid state; a series of studies are indicative of the 1,1-form which is generally dominant in solution even in cases where the crystal structure does not contain this tautomer. The homogeneous catalytic efficacy of all compounds against the well-known multicomponent
在这项工作中,我们研究了一系列基于半刚性苯并三唑的配体(L 1 –L 3)的配位化学,以及低配位数但用途广泛的Ag I离子。这导致了九种新的配位化合物[Ag(L 1)(CF 3 CO 2)](1),[Ag 2(L 1T)2(CF 3 SO 3)2 ]·2Me 2 CO(2), [Ag(L 2T)(ClO 4)(Me 2 CO)](3),[Ag(L 2T)(BF4)(Et 2 O)](4),[Ag 2(L 3T)2(ClO 4)2 ] 2(5),[Ag(L 3)(NO 3)](6),[Ag 2( L 3T)2(CF 3 CO 2)2 ](7),[Ag 2(L 3T)(CF 3 SO 3)2 ](8)和[Ag 2(L 3T)2(CF 3 CF 2 CO 2)2 ]·2Me 2 CO(9)。这些化合物显示出结构的多样性,包括二聚体(5,7,9)和一维(1D)(3,4,6)和二维(2D)(1,2,
Pyridinophanes as Two-Centre Phase-Transfer Catalyst for N-Alkylation Reaction
作者:Perumal Rajakumar、Manickam Dhanasekaran
DOI:10.1055/s-2006-926304
日期:——
The syntheticutility of water-soluble pyridinophanes 1 and 2 as an efficient two-centre phase-transfercatalyst for N-alkylation of indoles, imidazole, benzimidazole and benzotriazole has been explored. Application of such pyridinophanes for the synthesis of various precyclophanes involving bis-N alkylation is also described.
Benzotriazolophanes—New Class of Novel Cyclophanes
作者:Perumal Rajakumar、Venghatraghavan Murali
DOI:10.1016/s0040-4020(00)00717-1
日期:2000.9
benzotriazole with 4,4″-bis(bromomethyl)-1,1′:3′,1″-terphenyl in two steps gave the unprecedented benzotriazolophane 4a. By similar alkylation procedure, cyclophanes 4b, 4c and 4d were obtained from the substituted dibromides 6b, 6c and 6d, respectively. Novel cross-linked benzotriazolophane 5 was obtained by using the tetrabromide 9 as the spacer unit.
A Copper-Benzotriazole-Based Coordination Polymer Catalyzes the Efficient One-Pot Synthesis of (<i>N′</i>-Substituted)-hydrazo-4-aryl-1,4-dihydropyridines from Azines
作者:Michael Kallitsakis、Edward Loukopoulos、Alaa Abdul-Sada、Graham J. Tizzard、Simon J. Coles、George E. Kostakis、Ioannis N. Lykakis
DOI:10.1002/adsc.201601072
日期:2017.1.4
A series of new (N′‐substituted)‐hydrazo‐4‐aryl‐1,4‐dihydropyridines was successfully synthesized via a facile one‐pot catalytic pathway utilizing azines and propiolate esters as starting materials and a one‐dimensional copper benzotriazole‐based coordinationpolymer as catalyst. In the absence of catalyst, the corresponding 5‐substituted 4,5‐dihydropyrazoles were formed in moderate to high yields