Novel triphenylamine based rhodamine derivatives: synthesis, characterization, photophysical properties and viscosity sensitivity

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 100271-100280 ◽  
Author(s):  
Shantaram Kothavale ◽  
Nagaiyan Sekar
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Photophysical Properties ◽  
Rhodamine Derivatives ◽  
C Nmr

Five novel triphenylamine based deep red to NIR emitting rhodamine derivatives were synthesized and characterized by 1H and 13C NMR spectroscopy and elemental analysis.

[Zn(phen)2(CX3COO)]+, X = H orCl; Influence of X on the Coordination Mode of the Carboxylate Group (phen = 1,10-Phenanthroline)

2005 ◽  
Vol 60 (10) ◽  
pp. 1049-1053 ◽  
Author(s):  
Zeanab Talaei ◽  
Ali Morsali ◽  
Ali R. Mahjoub
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Coordination Mode ◽  
Bidentate Ligand ◽  
Carboxylate Group ◽  
X Ray ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Coordinate Geometry ◽  
C Nmr

Two new ZnII(phen)2 complexes with trichloroacetate and acetate anions, [Zn(phen)2(CCl3COO)- (H2O)](ClO4) and [Zn(phen)2(CH3COO)](ClO4), have been synthesized and characterized by elemental analysis, IR, 1H NMR, 13C NMR spectroscopy. The single crystal X-ray data of these compounds show the Zn atoms to have six-coordinate geometry. From IR spectra and X-ray crystallography it is established that the coordination of the COO− group is different for trichloroacetate and acetate. The former acts as a monodentate whereas the latter acts as a bidentate ligand.

Synthesis and Pharmacological Activities of Some New 2-[1-Heptyl-3-(4- methoxybenzyl)-5-oxo-1,5-dihydro-4H-1,2,4-triazol-4-yl]acetohydrazide Derivatives

2014 ◽  
Vol 69 (9-10) ◽  
pp. 969-981 ◽  
Author(s):  
Olcay Bekircan ◽  
Emre Mentese ◽  
Serdar Ulker
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Lipase Activity ◽  
Spectral Studies ◽  
Antituberculosis Activity ◽  
Pharmacological Activities ◽  
Mass Spectral ◽  
H Nmr ◽  
Acetohydrazide Derivative ◽  
C Nmr

Abstract In the present investigation, the key intermediate acetohydrazide derivative 5 was synthesized starting from 3-(4-methoxybenzyl)-4-amino-4,5-dihydro-1,2,4-triazol-5-one (1) by a four-step reaction. Thiosemicarbazides 6a-f and arylidenehydrazide derivatives 8a-d were obtained from compound 5. The cyclization of compounds 6a-f in the presence of NaOH resulted in the formation of compounds 7a-f. The compounds were characterized by IR, 1H NMR, 13C NMR spectroscopy, elemental analysis and mass spectral studies. The compounds were tested for their anti-lipase, anti-α-glucosidase and anti-mycobacterial activities. Compounds 6b and 8c exhibited excellent anti-lipase activity, and compound 8d showed excellent anti-a-glucosidase activity. Compounds 3 and 4 exhibited good antituberculosis activity

scholarly journals Synthesis and Single Crystal X-Ray Structure of Bis[4-oxo-3- (2-ethoxycarbonylphenyl)-3,4-dihydroquinazolin-2-yl]disulfide

2009 ◽  
Vol 64 (9) ◽  
pp. 1065-1069 ◽  
Author(s):  
Mehdi Rimaz ◽  
Jabbar Khalafy ◽  
Khadijeh Tavana ◽  
Katarzyna Ślepokura ◽  
Tadeusz Lis ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Structure Determination ◽  
Room Temperature ◽  
Sodium Ethoxide ◽  
Reaction Conditions ◽  
X Ray ◽  
Ethyl Nitroacetate ◽  
C Nmr

Diethyl 2,2´-thiocarbonyl-bis(azanediyl)dibenzoate was synthesized from the reaction of ethyl anthranilate with thiophosgene. Its treatment with sodium ethoxide in ethanol at room temperature gave ethyl 2-(4-oxo-2-thioxo-1,2-dihydroquinazolin-3(4H)-yl) benzoate, whereas in the presence of ethyl nitroacetate and under the same reaction conditions, the corresponding bis(quinazolin)disulfide was formed. Its structure was confirmed by IR, 1H and 13C NMR spectroscopy elemental analysis and single crystal X-ray structure determination.

scholarly journals Synthesis of cis, cis-1,3,5-trisubstituted cyclohexane based chelators with polyfunctional pendant arms

2005 ◽  
Vol 2005 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Minati Baral ◽  
B.K. Kanungo ◽  
Peter Moore
Keyword(s):  
Schiff Base ◽  
Nmr Spectroscopy ◽  
Organic Compounds ◽  
Elemental Analysis ◽  
H Nmr ◽  
Benzenetricarboxylic Acid ◽  
New Compounds ◽  
Pendant Arms ◽  
C Nmr

Some novel organic compounds of the type: cis, cis-1,3,5-tris(X)cyclohexane, where X= –CONH(CH2)2NH2, –CONH(CH2)3NH2, –CONH(CH2)2NCH –C6H4OH, CONH(CH2)3NCHC6H4OH, which are expected to function as potential polydentate chelators have been synthesised from 1,3,5-benzenetricarboxylic acid through multi-steps reactions. 1,3,5-benzenetricarboxylic acid was reduced to cis, cis-1,3,5-tris(ethylcarboxylate)cyclohexane, which on reaction with excess of 1,2-diaminoethane and 1,2-diaminopropane afforded two new compounds. Condensation of the obtained derivatives with three equivalents of salicylaldehyde resulted the formation of two new Schiff base compounds. All the compounds were characterised by a combination of elemental analysis, mass, IR, UV-Vis, 1H NMR and 13C NMR spectroscopy.

scholarly journals Synthesis and Photophysical and Electrochemical Properties of Functionalized Mono-, Bis-, and Trisanthracenyl Bridged Ru(II) Bis(2,2′:6′,2″-terpyridine) Charge Transfer Complexes

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Adewale O. Adeloye ◽  
Peter A. Ajibade
Keyword(s):  
Charge Transfer ◽  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Electrochemical Techniques ◽  
Visible Region ◽  
Charge Transfer Complexes ◽  
Cyclic Voltammograms ◽  
Butenoic Acid ◽  
Ft Ir ◽  
C Nmr

With the aim of developing new molecular devices having long-range electron transfer in artificial systems and as photosensitizers, a series of homoleptic ruthenium(II) bisterpyridine complexes bearing one to three anthracenyl units sandwiched between terpyridine and 2-methyl-2-butenoic acid group are synthesized and characterized. The complexes formulated as bis-4′-(9-monoanthracenyl-10-(2-methyl-2-butenoic acid) terpyridyl) ruthenium(II) bis(hexafluorophosphate) (RBT1), bis-4′-(9-dianthracenyl-10-(2-methyl-2-butenoic acid) terpyridyl) ruthenium(II) bis(hexafluorophosphate) (RBT2), and bis-4′-(9-trianthracenyl-10-(2-methyl-2-butenoic acid) terpyridyl) ruthenium(II) bis(hexafluorophosphate) (RBT3) were characterized by elemental analysis, FT-IR, UV-Vis, photoluminescence,1H and13C NMR spectroscopy, and electrochemical techniques by elemental analysis, FT-IR, UV-Vis, photoluminescence,1H and13C NMR spectroscopy, and electrochemical techniques. The cyclic voltammograms (CVs) of (RBT1), (RBT2), and (RBT3) display reversible one-electron oxidation processes atE1/2= 1.13 V, 0.71 V, and 0.99 V, respectively (versus Ag/AgCl). Based on a general linear correlation between increase in the length ofπ-conjugation bond and the molar extinction coefficients, the Ru(II) bisterpyridyl complexes show characteristic broad and intense metal-to-ligand charge transfer (MLCT) band absorption transitions between 480–600 nm,ε=9.45×103 M−1 cm−1, and appreciable photoluminescence spanning the visible region.

SYNTHESIS AND STUDY OF THE NEMATOCIDAL ACTIVITY OF 1,2,4-TRIAZOLO-1,2,4-TRIAZOLES

2020 ◽  
Vol 54 (1 (251)) ◽  
pp. 3-11
Author(s):  
M.A. Samvelyan ◽  
T.V. Ghochikyan ◽  
T.H. Yeganyan ◽  
M. Sarfraz ◽  
C. Jakob
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Thioglycolic Acid ◽  
Ethyl Esters ◽  
Steinernema Feltiae ◽  
Acid Basis ◽  
Biological Studies ◽  
Nematocidal Activity ◽  
C Nmr

The method has been developed for the preparation of ethyl esters of triazolo-substituted thioglycolic acid, basis on which the corresponding hydrazides, thiosemicarbazides and 1,2,4-triazolo-1,2,4-triazoles were synthesized by successive transformations. By the data of $ ^{1} \mathrm{H} $ and $ ^{13} \mathrm{C} $ NMR spectroscopy and elemental analysis have been established the structures of obtained compounds. Biological studies have shown that triazolo-triazoles at concentrations of 50 and 100 $ \mu m/mL $ reduce the viability of nematodes Steinernema Feltiae by 10–40%.

scholarly journals Design, synthesis and spectroscopic properties of crown ether-capped dibenzotetraaza[14]annulenes

2019 ◽  
Vol 15 ◽  
pp. 617-622 ◽  
Author(s):  
Krzysztof Miroslaw Zwoliński ◽  
Julita Eilmes
Keyword(s):  
Nmr Spectroscopy ◽  
Crown Ether ◽  
Elemental Analysis ◽  
Binding Sites ◽  
Spectroscopic Properties ◽  
Design Synthesis ◽  
Face To Face ◽  
C Nmr

The first crown ether-capped dibenzotetraaza[14]annulenes (DBTAAs), featuring two macrocyclic binding sites fixed in a face-to-face orientation, were synthesized in satisfactory 26–28% isolated yields. Direct N-alkylation of 1,4,10-trioxa-7,13-diazacyclopentadecane by symmetric DBTAA derivatives bearing bromoalkoxy pendants proceed smoothly at a reasonable level of dilution (1.25 mM). The structures were fully characterized by HR-ESIMS, FTIR-ATR, 1H and 13C NMR spectroscopy and elemental analysis.

Antiproliferative, antioxidant, computational and electrochemical studies of new azo-containing Schiff base ruthenium(ii) complexes

2018 ◽  
Vol 42 (4) ◽  
pp. 2952-2963 ◽  
Author(s):  
Ayşe İnan ◽  
Mesut İkiz ◽  
Seçil Erden Tayhan ◽  
Sema Bilgin ◽  
Nusret Genç ◽  
...  
Keyword(s):  
Schiff Base ◽  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Electrochemical Studies ◽  
Uv Visible ◽  
C Nmr

A new series of ruthenium(ii) complexes 7–11 containing the –NN– group are synthesized and characterized via elemental analysis, and IR, UV-visible and 1H–13C NMR spectroscopy.

Kondensationsreaktionen von Trifluornitrosomethan CF3NO mit Sulfanilamid H2NC6H4SO2NH2-Darstellung von CF3NNC6H4SO2NH2, CF3NNC6H4SO2NNCF3, CH3C(O)N(H)C6H4SO2NNCF3 und CF3C(0)N (H)C6H4SO2NH2 / Condensation Reactions of Trifluoronitrosomethane CF3NO with Sulfanilamide H2NC6H4SO2NH2- Preparation of CF3NNC6H4SO2NH2, CF3NNC6H4SO2NNCF3, CH3C(0)N(H)C6H4SO2NNCF3 and CF3C(0)N (H)C6H4SO2NH2

1997 ◽  
Vol 52 (5) ◽  
pp. 647-654 ◽  
Author(s):  
Rolf Minkwitz ◽  
Jens Jakob ◽  
Andreas Winter
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Protecting Groups ◽  
Amino Group ◽  
Condensation Reactions ◽  
New Compounds ◽  
C Nmr

Abstract We report the condensations of trifluoronitrosom ethane with sulfanilamide. The new compounds p-trifluorom ethylazophenylsulfonamide CF3NNC6H4SO2NH2, p-trifluorom ethylazosulfonyltrifluorom ethylazobenzole CF3NNC6H4SO2NNCF3 and p-trifluoromethylazosulfonylacetanilide CH3C(O)N(H)C6H4SO2NNCF3 were characterized by elemental analysis, IR, Raman, mass, 1H , 19F and 13C NMR spectroscopy. In addition we present our approach to the preparation of p-trifluorom ethylazosulfonylaniline H2NC6H 4SO2NNCF3 by using protecting groups for the amino group.

scholarly journals Synthesis, Characterization, Mössbauer Parameters, and Antitumor Activity of Fe(III) Curcumin Complex

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Mutasim Ibrahim Khalil ◽  
Aisha Mohamed Al-Zahem ◽  
Maha Hamad Al-Qunaibit
Keyword(s):  
Nmr Spectroscopy ◽  
Antitumor Activity ◽  
Elemental Analysis ◽  
Magnetic Relaxation ◽  
Enol Form ◽  
Spectroscopic Techniques ◽  
H Nmr ◽  
Mössbauer Parameters ◽  
Prepared Complex ◽  
C Nmr

Curcumin-Fe(III) complex was prepared from Fe(NO3)3·9H2O precursor and curcumin by refluxing a slightly basic methanolic solution of their mixture with the objective of investigating its cytotoxicity. The enol form of curcumin ligand was established by FTIR, UV/Vis,1H NMR, and13C NMR spectroscopy. The as-prepared product was characterized by elemental analysis, FTIR, UV, and Mössbauer spectroscopic techniques. An octahedral high-spin Fe(III) complex was obtained,δ, 0.37 mms−1; Q.S., 0.79 mms−1; no magnetic relaxation was observed at liquid N2temperature, neither reduction of Fe(III). The tested cytotoxicity of the as-prepared complex on four cancer cell lines indicated inhibition of the curcumin activity upon complexing with iron.

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