Benzimidazoles and benzoxazoles via the nucleophilic addition of anilines to nitroalkanes
作者:Alexander V. Aksenov、Alexander N. Smirnov、Nicolai A. Aksenov、Asiyat S. Bijieva、Inna V. Aksenova、Michael Rubin
DOI:10.1039/c5ob00131e
日期:——
PPA-induced umpolung triggers efficient nucleophilic addition of unactivated anilines to nitroalkanes to afford benzoxazoles and benzimidazoles.
PPA诱导的极性反转触发了对未活化苯胺与硝基烷烃的高效亲核加成,生成苯并噁唑和苯并咪唑。
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.
Construction of Zn<sup>II</sup>-based<i>rac</i>-Helical Chains Containing Semi-rigid Dipolar Ligand 1,4-Bis(benzimidazol-1-ylmethyl)benzene
作者:Quan-Yan Wen、Jian-Qiao Chen、Hua-Cai Fang、Li Chen、Zheng-Yuan Zhou、Zuo-Jun Hu、Yue-Peng Cai
DOI:10.1002/zaac.200801233
日期:2009.3
A ZnII compound based on the semi-rigiddipolarligand1,4-bis(benzimidazol-1-ylmethyl)benzene (L), [Zn(L)2Cl2]·2DMF}n (1) has been synthesized successfully under solvothermal conditions. X-ray single crystal diffraction shows that the complex contains P-helical and M-helical chains with 21 screw axis but crystallizes as a racemate. Through π···π stacking interactions between two well-overlapping
基于半刚性偶极配体1,4-双(苯并咪唑-1-基甲基)苯(L),[Zn(L)2Cl2]·2DMF}n(1),在溶剂热条件下成功合成了ZnII化合物. X 射线单晶衍射表明该配合物含有 P-螺旋和 M-螺旋链,具有 21 个螺旋轴,但结晶为外消旋体。通过来自两条相邻链的两个良好重叠的苯并咪唑环之间的π···π堆积相互作用,组装了3D外消旋超分子网络。此外,这项工作还研究了红外、热重和发光特性。
Six metal-organic frameworks assembled from asymmetric triazole carboxylate ligands: Synthesis, crystal structures, photoluminescence properties and antibacterial activities
作者:Qinke Zhang、Caipeng Yue、Yan Zhang、Yali Lü、Yaping Hao、Yalei Miao、Jinpeng Li、Zhongyi Liu
DOI:10.1016/j.ica.2017.12.036
日期:2018.3
and IR spectroscopy. 1, 4 and 5 display (4,4)-connected 3-D frameworks which all can be simplified into the Schlafli symbol of (42·63·8) with sra topology, while 2 is also a (4,4)-connected 3-D network which has the Schlafli symbol of (42·84) with pts topology. 3 exhibits a 2-D structure with 3,4L83 topology and 6 is a 1-D chain structure. The fluorescent properties of 1–3 and 5 have been studied in
Construction of one- and two-dimensional coordination polymers using ditopic imidazole ligands
作者:Liliana Dobrzańska、Gareth O. Lloyd、Tia Jacobs、Ilse Rootman、Clive L. Oliver、Martin W. Bredenkamp、Leonard J. Barbour
DOI:10.1016/j.molstruc.2006.02.059
日期:2006.8
series of ditopic imidazole functionalised ligands have been investigated for their propensity to form one- and two-dimensionalcoordinationpolymers with a range of metals. We show that ditopic imidazole ligands have the versatility to be exploited in the formation of a variety of coordinationpolymers.