具有不同氟化苯氧亚胺配体的一系列碱金属配合物(Li,Na,K)[M {(O-2-(RN═CH)-C 6 H 4 }] [R = C 6 F 5; 2, 4,6-F 3 C 6 H 2 F 3 ; 2,6-C 6 H 3 F 2 ; 2,3-C 6 H 3 F 2 ; 2-C 6 H 4 F; 2-CF 3 C 6 H 4通道2 ; CF 3通道2已经合成并充分表征。通过使用THF作为溶剂,获得了适合于X射线衍射分析的晶体,并且已经确定了一些制备的化合物的固态结构。该分析揭示了带有五氟配体的钾化合物形成了一个CF键活化产物。在更强的供体溶剂(例如二甲亚砜)中,此过程将立即进行,而与所使用的金属无关。这种CF激活在室温下平稳进行。该反应的性质由研究1使用化学计量的DMSO进行H-DOSY NMR实验,监测从初始溶液结构到最终活化产物的分解过程。还研究了氟原子数目的变化及其在亚胺基环中的位置,显
具有不同氟化苯氧亚胺配体的一系列碱金属配合物(Li,Na,K)[M {(O-2-(RN═CH)-C 6 H 4 }] [R = C 6 F 5; 2, 4,6-F 3 C 6 H 2 F 3 ; 2,6-C 6 H 3 F 2 ; 2,3-C 6 H 3 F 2 ; 2-C 6 H 4 F; 2-CF 3 C 6 H 4通道2 ; CF 3通道2已经合成并充分表征。通过使用THF作为溶剂,获得了适合于X射线衍射分析的晶体,并且已经确定了一些制备的化合物的固态结构。该分析揭示了带有五氟配体的钾化合物形成了一个CF键活化产物。在更强的供体溶剂(例如二甲亚砜)中,此过程将立即进行,而与所使用的金属无关。这种CF激活在室温下平稳进行。该反应的性质由研究1使用化学计量的DMSO进行H-DOSY NMR实验,监测从初始溶液结构到最终活化产物的分解过程。还研究了氟原子数目的变化及其在亚胺基环中的位置,显
Novel lithium Schiff-base cluster complexes as electron injectors: synthesis, crystal structure, thin film characterisation and their performance in OLEDs
作者:Poopathy Kathirgamanathan、Sivagnanasundram Surendrakumar、Juan Antipan-Lara、Seenivasagam Ravichandran、Y. F. Chan、Vincent Arkley、Subramanium Ganeshamurugan、Muttulingham Kumaraverl、Gnanamoly Paramswara、Arumugam Partheepan、Vanga R. Reddy、Daniel Bailey、Alexander J. Blake
DOI:10.1039/c2jm15114f
日期:——
A set of novel lithium Schiff base cluster compounds has been synthesised and characterised for the first time and tested as electron injectors in OLED devices. Their electrical, electronic, thermal and optical properties have been investigated and compared with the industry standards LiF and lithium quinolinolate (LiQ). Amongst the compounds tested, lithium 2-((o-tolylimino)methyl) phenolate was found to enhance the efficiency of OLEDs by 69% compared to LiF and 15% compared to LiQ. The same electron injector was found to extend the lifetimes of OLEDs by six-fold compared to LiF and 4.3-fold compared to LiQ respectively. The crystal structure of the parent compound, lithium 2-((phenylamino)methyl)phenolate reveals that the compound is tetrameric in contrast to hexameric LiQ. Substituting the methyl group with fluorine causes a remarkable depression of the HOMO and LUMO levels by up to 1.2 eV. Analysis of current density vs. voltage characteristics of single-layer devices for Li–Al/electron injector/Li–Al and Al/electron injector/Al reveals that both sets of devices are operating as electron-only devices indicating that the formation of free lithium is the cause of enhanced electron injection, but either the energetic aluminium atoms (as proposed previously by other workers) or energetic lithium complexes on an aluminium surface (as we have demonstrated in this paper) are all that is required for efficient electron injection.
A highly enantioselective synthesis of 3,4-diaminochroman-2-ones has been realized via the domino reaction of o-hydroxy aromatic aldimines and azlactones. Notably, a cis-product was obtained as the major product by the use of guanidine 2a whereas a trans-product was the major product with bisguanidium salt 3•HBArF4. In two cases, various substituted 3,4-dihydrocoumarins were obtained with high yields
通过邻羟基芳族醛亚胺和a内酯的多米诺反应,已经实现了对3,4-二氨基苯并二氢吡喃-2-酮的高度对映选择性的合成。值得注意的是,通过使用胍2a获得了顺式产物作为主要产物,而反式产物是双胍盐3•HBAr F 4的主要产物。在两种情况下,以高收率(高达99%),出色的对映选择性(高达99%ee)和非对映选择性(高达> 99:1顺式:反式和98:2 )获得了各种取代的3,4-二氢香豆素。反式:顺式,分别)在温和的反应条件下。
Abramenko; Chernega; Ardanova, Russian Journal of Inorganic Chemistry, 2002, vol. 47, # 6, p. 816 - 824
作者:Abramenko、Chernega、Ardanova、Sergienko
DOI:——
日期:——
Intramolecular C–F Activation in Schiff-Base Alkali Metal Complexes
作者:Francisco M. García-Valle、Vanessa Tabernero、Tomás Cuenca、Marta E. G. Mosquera、Jesús Cano
DOI:10.1021/acs.organomet.8b00868
日期:2019.2.25
the prepared compounds has been determined. This analysis reveals the formation of a C–F bond activation product for the potassium compound with the five-fluorinated ligand. In stronger donor solvents, such as dimethylsulfoxide, this process occurs immediately, independently of the metal used. This C–Factivation takes place in a smooth process at room temperature. The nature of this reaction is studied
具有不同氟化苯氧亚胺配体的一系列碱金属配合物(Li,Na,K)[M (O-2-(RN═CH)-C 6 H 4 }] [R = C 6 F 5; 2, 4,6-F 3 C 6 H 2 F 3 ; 2,6-C 6 H 3 F 2 ; 2,3-C 6 H 3 F 2 ; 2-C 6 H 4 F; 2-CF 3 C 6 H 4通道2 ; CF 3通道2已经合成并充分表征。通过使用THF作为溶剂,获得了适合于X射线衍射分析的晶体,并且已经确定了一些制备的化合物的固态结构。该分析揭示了带有五氟配体的钾化合物形成了一个CF键活化产物。在更强的供体溶剂(例如二甲亚砜)中,此过程将立即进行,而与所使用的金属无关。这种CF激活在室温下平稳进行。该反应的性质由研究1使用化学计量的DMSO进行H-DOSY NMR实验,监测从初始溶液结构到最终活化产物的分解过程。还研究了氟原子数目的变化及其在亚胺基环中的位置,显