437981-33-4Relevant academic research and scientific papers
Synthesis of novel bis- and poly(hydrazinylthiazole) linked to benzofuran or benzothiazole as new hybrid molecules
Salem, Mostafa E.,Darweesh, Ahmed F.,Shaaban, Mohamed R.,Elwahy, Ahmed H.M.
, p. 73 - 88 (2019/04/17)
A novel series of bis- and poly(thiazoles) substituted with benzofuran and benzothiazole moieties were prepared in good yields by the reaction of the appropriate bis(α-bromoketones) with the corresponding bis- and poly(hydrazinecarbothioamide) in refluxing EtOH in the presence of TEA. The structures of the new compounds were confirmed based on elemental analyses as well as spectral data.
Synthesis and Structures of Novel Multi-armed Molecules Involving Benzene as a Core and 4-Phenylthiazole, 4-Pyrazolylthiazole, or Thiadiazole Units as Arms
Salem, Mostafa E.,Darweesh, Ahmed F.,Farag, Ahmad M.,Elwahy, Ahmed H. M.
, p. 586 - 595 (2017/02/03)
A synthesis of novel three-, four-, and sixfold branched 4-phenylthiazolylhydrazones, 4-pyrazolylthiazolyl hydrazones, and thiadiazoles which are linked to a benzene core via phenoxymethyl spacers was reported. The synthetic methodology includes initially formation of poly(aldehyde thiosemicarbazones) 9, 14, and 15 by acid catalyzed condensation of thiosemicarbazide (8) with the appropriate poly(aldehydes) 3, 5, and 7, respectively. Subsequent reaction of 9, 14, and 15 with each of 2-bromo-1-phenylethanone (10a) and 2-bromo-1-(4-chlorophenyl)ethanone (10b) in refluxing ethanol in the presence of few drops of TEA afforded 11, 16, and 18, respectively, in good yields. On the other hand, the synthesis of the novel poly(4,5-dihydro-1,3,4-thiadiazolyl) derivatives 20, 21a,21b, and 22 was performed by cyclization of 9b, 14a,14b, and 15a, respectively, in refluxing acetic anhydride.
Thermodynamic Analysis of Allosteric and Chelate Cooperativity in Di- and Trivalent Ammonium/Crown-Ether Pseudorotaxanes
Nowosinski, Karol,Von Krbek, Larissa K. S.,Traulsen, Nora L.,Schalley, Christoph A.
supporting information, p. 5076 - 5079 (2015/11/03)
A detailed thermodynamic analysis of the axle-wheel binding in di- and trivalent secondary ammonium/[24]crown-8 pseudorotaxanes is presented. Isothermal titration calorimetry (ITC) data and double mutant cycle analyses reveal an interesting interplay of p
A novel Schiff base bearing dopamine groups with tripodal structure. Synthesis and its salen/salophen-bridged Fe/Cr(III) capped complexes
Kocyigit, Ozcan
, p. 69 - 74 (2013/03/14)
This work presents the synthesis of a novel Schiff base and its complexation properties with Fe(III) and Cr(III). A Schiff base bearing dopamine (TRDPA) was synthesized using dopamine hydrochloride and 1,3,5-tris (formylphenoxymethyl)benzene in methanol media. The prepared TRDPA was then reacted with four new trinuclear Fe(III) and Cr(III) complexes involving tetradenta Schiff bases N,N-bis(salicylidene)ethylenediamine-(salenH 2) or bis(salicylidene)-o-phenylenediamine-(salophenH2). The structures of these compounds were characterized through 1H NMR, 13C NMR, FT-IR, thermal analysis (TG), elemental analysis, and magnetic susceptibility measurements. The complexes were also characterized as low-spin distorted octahedral Fe(III) and Cr(III) bridged by a catechol group.
Synthesis, characterization, and pH-induced luminescence switching of two trinuclear Ru(II) polypyridyl complexes containing imidazole
Cheng, Feixiang,Chen, Jishu,Wang, Fan,Tang, Ning,Hou, Nengbang,Chen, Guang
, p. 415 - 421 (2012/10/30)
Two tripodal ligands H3L1 and H3L 2 containing imidazole rings have been prepared by the reaction of 1,10- phenanthroline-5,6-dione with 1,3,5-tris[(4-formylphenoxy)- methyl]benzene and 1,3,5-tris[(2-formylpheno
The investigation of complexation properties and synthesis of the (salen and salophen)-bridged Fe/Cr(III) capped complexes of novel Schiff bases
Kocyigit, Ozcan,Guler, Ersin
experimental part, p. 29 - 37 (2011/10/30)
This article describes synthesis of novel Schiff base and its complexation properties with Fe(III) and Cr(III). Firstly 1,3,5-tris (formylphenoxymethyl)benzene (1, TRIPOD) with tris aldehyde groups were synthesized using the 1,3,5-trisbromomethylbenzene a
Synthesis of 1,3,5-tris(4-(4-nitrophenyliminomethyl)phenoxymethyl)benzene as a new Schiff base and its complexation properties with the (salen and salophen)-bridged Fe/Cr(III)
Kocyigit, Ozcan,Guler, Ersin
body text, p. 287 - 293 (2011/11/29)
In the present study, we discussed to synthesis of a new Schiff base with nitro groups and its complexation properties with Fe/Cr(III) salen/salophen capped complexes. For this, 1,3,5-tris (formylphenoxymethyl)benzene (1, TRIPOD) involving aldehyde groups was converted to the Schiff base derivative (2, TNPIM-TRIPOD) using 4-nitroaniline. The synthesized compound 2 were reacted with four new trinuclear Fe(III) and Cr(III) complexes involving tetradenta Schiff bases N,N-bis(salicylidene)ethylenediamine-(salenH2) or bis(salicylidene)-o-phenylenediamine-(salophenH2). Characterization of all compounds was made with elemental analysis, infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), nuclear magnetic resonance (1H-NMR), and magnetic susceptibility measurement. The complexes can also be characterized as low-spin distorted octahedral Fe(III) and Cr(III) bridged by nitro groups. Springer Science+Business Media B.V. 2009.
Synthesis, complexation studies and biological applications of some novel stilbenophanes, indolophanes and bisindolostilbenophanes via McMurry coupling
Rajakumar, Perumal,Gayatri Swaroop, Merikapudi,Jayavelu,Murugesan
, p. 12041 - 12050 (2007/10/03)
Various types of stilbenophanes, indolophanes and bisindolostilbenophanes were synthesized by intra-, inter- and tandem intra-, intermolecular McMurry coupling. Some of the indolophanes and bisindolostilbenophanes exhibited significant activity against th
A new trimeric cinchona alkaloid as a chiral phase-transfer catalyst for the synthesis of asymmetric α-amino acids
Siva, Ayyanar,Murugan, Eagambaram
, p. 2927 - 2933 (2007/10/03)
A new trimeric cinchona alkaloid, the quaternary ammonium salt, α,α′,α″-tris[O(9)-allylcinchonidinium-(4- methylphenoxymethyl)]benzene trichloride, has been synthesized and used as an efficient phase-transfer catalyst in asymmetric alkylation of N-(diphen
Synthesis of bicyclic cyclophanes with chiral cages by sixfold coupling
Rajakumar, Perumal,Srisailas, Muthialu
, p. 1909 - 1913 (2007/10/03)
Coupling of (S)-binol with various tribromides afforded bicyclic cyclophanes by sixfold coupling. Coupling of tricarbonyl tribromide with binol gave a novel chiral cyclophane with six co-ordination sites for complexation.
