Symmetrical tetra-β″-sulfoleno-meso-aryl-porphyrins — synthesis, spectroscopy and structural characterization

2014 ◽  
Vol 18 (01n02) ◽  
pp. 115-122 ◽  
Author(s):  
Srinivas Banala ◽  
Klaus Wurst ◽  
Bernhard Kräutler
Keyword(s):  
Metal Complexes ◽  
Crystal Structures ◽  
Structural Characterization ◽  
Building Blocks ◽  
Cycloaddition Reactions ◽  
One Pot

We report here the preparation (in "one-pot") of a tetra-β″-sulfoleno-meso-aryl-porphyrin in about 80% yield by using an optimized modification of Lindsey's variant of the Adler–Longo approach. The Zn ( II )-, Cu ( II )- and Ni ( II )-complexes of the symmetrical porphyrin were prepared and characterized spectroscopically. Crystal structures of the fluorescent Zn ( II )- and of the non-fluorescent Ni ( II )-tetra-β″-sulfoleno-meso-aryl-porphyrinates showed the highly substituted porphyrin ligands to be nearly perfectly planar. The Zn ( II )-complex of this porphyrin has been used as a thermal precursor of a reactive diene, and — formally — of lateral and diagonal bis-dienes, of a tris-diene and of a tetra-diene, which all underwent [4 + 2]-cycloaddition reactions in situ with a range of dienophiles. Thus, the tetra-β″-sulfoleno-meso-aryl-porphyrin and its metal complexes represent reactive building blocks, "programmed" for the syntheses of symmetrical and highly functionalized porphyrins.

One-pot three-component polymerization for in situ generation of AIE-active poly(tetraarylethene)s using Grignard reagents as building blocks

2020 ◽  
Vol 11 (35) ◽  
pp. 5601-5609
Author(s):  
Zijie Qiu ◽  
Qingqing Gao ◽  
Ting Han ◽  
Xiaolin Liu ◽  
Jacky W. Y. Lam ◽  
...  
Keyword(s):  
Building Blocks ◽  
Grignard Reagents ◽  
One Pot ◽  
Aggregation Induced Emission ◽  
In Situ Generation

A facile polymerization route for in situ generation of polymers with aggregation-induced emission (AIE) characteristics has been developed.

Palladium-catalyzed one-pot cycloaddition reactions of thioureas with 3H-indol-3-ones generated in situ from 2-alkynyl arylazides: rapid and efficient access to imidazoloindolines

2020 ◽  
Vol 7 (21) ◽  
pp. 3480-3485
Author(s):  
Ping Li ◽  
Boyu Zhu ◽  
Yao Xu ◽  
Zhiqiang Zhou ◽  
Guiwen Hu ◽  
...  
Keyword(s):  
Cycloaddition Reactions ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Efficient Access ◽  
Palladium Catalyzed

An efficient palladium-catalyzed one-pot synthesis of imidazoloindolines from 2-alkynyl arylazides under mild reaction conditions has been described.

Novel metal complexes containing a chiral trinitrogen isoindoline-based pincer ligand: in situ synthesis and structural characterization

2010 ◽  
Vol 39 (44) ◽  
pp. 10671 ◽  
Author(s):  
Jessica L. Cryder ◽  
Andrew J. Killgore ◽  
Curtis Moore ◽  
James A. Golen ◽  
Arnold L. Rheingold ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Structural Characterization ◽  
In Situ Synthesis ◽  
Pincer Ligand

A New Synergic-Assembly Strategy Towards Three-Dimensional (3D) Hollow Nanoarchitectures

2008 ◽  
Vol 8 (12) ◽  
pp. 6208-6222 ◽  
Author(s):  
Changzheng Wu ◽  
Yi Xie
Keyword(s):  
Large Scale ◽  
Three Dimensional ◽  
Building Blocks ◽  
Growth Direction ◽  
The Self ◽  
Assembly Process ◽  
Next Generation ◽  
One Pot ◽  
Assembly Strategy

Large-scale synthesis and assembly of meso-, micro- and nanostructured building blocks with the desired orientations are of great interest for the next-generation nanoarchitecture design. On the consideration that the traditional synthetic methodologies for nanostructures often produce tangled nanounits, how to align the nanounits into the ordered orientation at high production yield is a great challenge to current methods. The present review describes a facile and controllable way to grow and assemble the 3D hollow nanoarchitectures, with the utilization of the synergic effects of hollowing process from the self-produced templates and the highly anisotropic growth of nanounits of the target materials in one-pot reaction. In this process, the building block nanounits spontaneously in-situ form owing to their highly anisotropic internal structure, while the self-produced templates act as the supporter and growth-direction guidance for the in-situ formed nanounits. Therefore, the whole assembly process is simple, controllable and without the complicated manipulations. Herein, in the light of the different kinds of self-produced templates involved in the assembly process, recent developments based on the new synergic-assembly strategy are reviewed according to the classifications: (1) self-produced gas bubble template strategy; (2) self-produced homogeneous solid template strategy; (3) self-produced heterogeneous solid template strategy. Notably, the synergic-assembly methodology described in this review provides a newly essential way to construct and assemble nanoarchitectures facilely and controllably, and is also a crucial step for the next-generation of nanoarchitecture design in the near future. In conclusion, the challenges and prospects for the future are discussed.

Metal complexes of a novel heterocyclic benzimidazole ligand formed by rearrangement-cyclization of the corresponding Schiff base. Electrosynthesis, structural characterization and antimicrobial activity

2018 ◽  
Vol 47 (12) ◽  
pp. 4325-4340 ◽  
Author(s):  
I. Casanova ◽  
M. L. Durán ◽  
J. Viqueira ◽  
A. Sousa-Pedrares ◽  
F. Zani ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Schiff Base ◽  
Metal Complexes ◽  
Structural Characterization ◽  
Electrochemical Synthesis ◽  
One Pot

One-pot electrochemical synthesis of metal complexes containing a novel heterocyclic benzimidazole ligand is reported and characterized.

One-Pot Preparation of Stable Organoboronate Reagents for the Functionalization of Unsaturated Four- and Five-Membered Carbo­- and Heterocycles

Synthesis ◽  
2018 ◽  
Vol 50 (16) ◽  
pp. 3149-3160 ◽  
Author(s):  
Dorian Didier ◽  
Andreas Baumann ◽  
Michael Eisold ◽  
Arif Music
Keyword(s):  
Room Temperature ◽  
Functional Group ◽  
Building Blocks ◽  
Boronic Acids ◽  
Ex Situ ◽  
One Pot ◽  
Potential Applicability ◽  
Facile Preparation

Combining a facile preparation of organoboronates with their remarkable stability and functional group tolerance allows for the straightforward synthesis of four- and five-membered carbo- and hetero­cycles. While most strategies rely on the ex situ preparation of boronic acids as isolated intermediates, we demonstrate that in situ transmetalation of sensitive organometallics with boron alkoxides can lead to great stabilization of such species at room temperature. A considerable extension of the library of unsaturated strained structures is achieved through these sequences, expanding the potential applicability of such unusual building blocks.

In situ transformation of a tridentate to a tetradentate unsymmetric Schiff base ligand via deaminative coupling in Ni(ii) complexes: crystal structures, magnetic properties and catecholase activity study

2020 ◽  
Vol 7 (1) ◽  
pp. 247-259 ◽  
Author(s):  
Monotosh Mondal ◽  
Soumavo Ghosh ◽  
Souvik Maity ◽  
Sanjib Giri ◽  
Ashutosh Ghosh
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
Antiferromagnetic Coupling ◽  
Donor Ligand ◽  
Reduced Schiff Base ◽  
Catecholase Activity

An N2O donor reduced Schiff base in presence of Ni(ClO4)2·6H2O and SCN− transforms into N2O2 donor ligand via deaminative coupling. Metal complexes 1 and 3 exhibit catecholase like activity and antiferromagnetic coupling between the Ni(ii) ions.

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