scholarly journals Synthesis of Calix[4]resorcinarene Based Dyes and its Application in Dyeing of Fibres

2008 ◽  
Vol 5 (s1) ◽  
pp. 1037-1047 ◽  
Author(s):  
Vinod K. Jain ◽  
Shibu G. Pillai ◽  
Parin H. Kanaiya
Keyword(s):  
Elemental Analysis ◽  
Aromatic Compounds ◽  
Anthranilic Acid ◽  
Fastness Properties ◽  
Aminobenzoic Acid ◽  
Colour Difference ◽  
H Nmr ◽  
Colour Strength ◽  
Strength Determination ◽  
Ft Ir

Four new ʻupper rimʼ azocalix[4]resorcinarene have been synthesized by coupling calix[4]resorcinarene with different diazotized aromatic compounds of sulphanilic acid, anthranilic acid,o-aminophenol andp-aminobenzoic acid. The prepared compounds were characterized based on m.p., elemental analysis, FT-IR,1H-NMR. These dyes have been used for the dyeing of textile fibres like cotton and wool. Their fastness properties such as fastness to sunlight, water, washings, and perspiration have also been studied. The synthesized dyes have been employed for computerized colour strength determination through colour matching with known standards. Their L, A*, B*values as well as the colour difference values such as ∆L, ∆A*, ∆B*, ∆C and ∆H have also been reported.

scholarly journals SYNTHESIS AND STRUCTURAL ELUCIDATION OF AMINO ACETYLENIC AND THIOCARBAMATES DERIVATIVES FOR 2-MERCAPTOBENZOTHIAZOLE AS ANTIMICROBIAL AGENTS

2017 ◽  
Vol 9 (2) ◽  
pp. 192
Author(s):  
Aseel Alsarahni ◽  
Zuhair Muhi Eldeen ◽  
Elham Al-kaissi ◽  
Ibrahim Al- Adham ◽  
Najah Al-muhtaseb
Keyword(s):  
Antimicrobial Activity ◽  
Elemental Analysis ◽  
Antimicrobial Agents ◽  
Diffusion Method ◽  
Benzothiazole Derivatives ◽  
H Nmr ◽  
Ft Ir ◽  
Potential Antimicrobial Activity ◽  
C Nmr

<p><strong>Objective: </strong>To design and synthesize amino acetylenic and thiocarbonate of 2-mercapto-1,3-benthiazoles as potential antimicrobial agents.</p><p><strong>Methods: </strong>A new series of 2-{[4-(t-amino-1-yl) but-2-yn-1-yl] sulfanyl}-1,3-benzothiazole derivatives (AZ1-AZ6), and S-1,3-benzothiazol-2-yl-O-alkyl carbonothioate derivatives were synthesised, with the aim that the target compounds show new and potential antimicrobial activity. The elemental analysis was indicated by the EuroEA elemental analyzer, and biological characterization was via IR, <sup>1</sup>H-NMR, [13]C-NMR, DSC were determined with the aid of Bruker FT-IR and Varian 300 MHz spectrometer using DMSO-d<sub>6</sub> as a solvent.<em> </em><em>In vitro </em>antimicrobial activity, evaluation was done for the synthesised compounds, by agar diffusion method and broth dilution test. The minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) were determined. <em></em></p><p><strong>Results: </strong>The IR, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR, DSC and elemental analysis were consistent with the assigned structures. Compound of 2-{[4-(4-methylpiperazin-1-yl)but-2-yn-1-yl] sulfanyl}-1,3-benzothiazole (AZ1), 2-{[4-(2-methylpiperidin-1-yl)but-2-yn-1-yl]sulfanyl}-1,3-benzothiazole (AZ2), 2-{[4-(piperidin-1-yl) but-2-yn-1-yl]sulfanyl}-1, 3-benzothiazole (AZ6), S-1,3-benzothiazol-2-yl-O-ethyl carbonothioate (AZ7), and S-1,3-benzothiazol-2-yl-O-(2-methylpropyl) carbonothioate (AZ9) showed the highest antimicrobial activity against <em>Pseudomonas aeruginosa </em>(<em>P. aeruginosa</em>), AZ-9 demonstrated the highest antifungal activity against <em>Candida albicans </em>(<em>C. albicans</em>), with MIC of 31.25 µg/ml.</p><p><strong>Conclusion: </strong>These promising results promoted our interest to investigate other structural analogues for their antimicrobial activity further.</p>

scholarly journals Guest-Host Inclusion Complex Formation of 2-, 3-, and 4-Aminobenzoic Acids with Native and Modified Cyclodextrins

2016 ◽  
Vol 69 ◽  
pp. 10-21 ◽  
Author(s):  
Narayanasamy Rajendiran ◽  
J. Thulasidhasan ◽  
M. Jude Jenita
Keyword(s):  
Inclusion Complex ◽  
Inclusion Complexation ◽  
Aminobenzoic Acid ◽  
Time Resolved ◽  
H Nmr ◽  
Buffer Solutions ◽  
Aminobenzoic Acids ◽  
Modified Cyclodextrins ◽  
Ft Ir ◽  
Uv Visible

The inclusion complexation of 2-aminobenzoic acid (2ABA), 3-aminobenzoic acid (3ABA), and 4-aminobenzoic acid (4ABA) with α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), hydroxypropyl-α-cyclodextrin (HP-α-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) were studied in buffer solutions of differentpHs (pH~1 andpH~7) and it was carried out using UV-Visible, steady-state and time-resolved fluorescence. Dual fluorescence was observed for all the compounds in aqueous and CD medium. All the ABAs forms 1:1 inclusion complex at pH ~ 1 solution and mixture of 1:1 and 1:2 inclusion complex at pH ~7. With CDs, dual luminescence appeared at pH ~ 1 indicates, both NH3+and COOH groups are present in the interior of the CDs cavities. FT-IR,1H NMR, results suggest ABAs formed a stable inclusion complex with the CDs.

Photochemical Reactions of Re(CO)5Br with Ph2P(S)(CH2)nP(S)Ph2 (n = 1,2,3)

2004 ◽  
Vol 59 (7) ◽  
pp. 836-838 ◽  
Author(s):  
Elif Subasi ◽  
Ozan Sanlı Sentürk ◽  
Fadime Ugur (Sarikahya)
Keyword(s):  
Mass Spectroscopy ◽  
Elemental Analysis ◽  
Photochemical Reaction ◽  
Photochemical Reactions ◽  
Bidentate Coordination ◽  
H Nmr ◽  
Nmr Spectrometry ◽  
Ft Ir

The complexes fac-[Re(CO)3Br{Ph2P(S)(CH2)nP(S)Ph2}] [1a, n = 1; 2a, n = 2; 3a, n = 3] and [Re2(CO)8Br2{μ- Ph2P(S)(CH2)nP(S)Ph2}] [1b, n = 1; 2b, n = 2; 3b, n = 3] have been prepared by the photochemical reaction of Re(CO)5Br with Ph2P(S)(CH2)nP(S)Ph2. The products have been characterized by elemental analysis, mass spectroscopy, FT-IR and 31 P-[1H]-NMR spectrometry. The results suggest cis-chelate bidentate coordination of the ligand in fac-1a - 3a and cis-bridging bidentate coordination of the ligand between two metals in 1b - 3b.

scholarly journals Inclusion Complex of Gedunin-2-Hydroxypropyl-Β-Cyclodextrin Prepared by Kneading and Freeze-Drying Methods: Synthesis and Structural Characterization

2021 ◽  
Vol 4 (1) ◽  
pp. 83-97
Author(s):  
Mary Olufunmilayo Ologe ◽  
Adedibu Clement Tella ◽  
Olubunmi Atolani ◽  
Olajire Aremu Adegoke ◽  
Olusegun George Ademowo
Keyword(s):  
Inclusion Complex ◽  
Oral Administration ◽  
Elemental Analysis ◽  
Freeze Drying ◽  
Aqueous Solubility ◽  
Drying Methods ◽  
Cyclodextrin Complex ◽  
H Nmr ◽  
Ft Ir ◽  
Pharmacologically Active

Abstract The potential application of gedunin, a pharmacologically active limonoid, is limited in medicine because it has poor aqueous solubility. This study was aimed at preparation and characterization of an inclusion complex of gedunin and 2-hydroxypropyl-β-cyclodextrin (HBD) to increase the solubility in aqueous solvents and thus enhance the possibility of pharmaceutical formulation and oral administration of gedunin. Inclusion complex of gedunin isolated from Entandrophragma angolense heartwood with 2-hydroxypropyl-β-cyclodextrin (HBD) was prepared using freeze-drying and kneading methods. The gedunin-2-hydroxypropyl-β-cyclodextrin complex (GCD) was characterized using elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H-NMR) and X-ray diffraction analysis (XRD). Elemental analysis indicated that gedunin and HBD formed 1:1 stoichiometric inclusion complex. Results of FT-IR indicated that gedunin was stabilized in HBD cavity by intra-molecular hydrogen bonds and van der Waals forces. 1H-NMR revealed that the entire gedunin molecule was not trapped into the core of the HBD. Nevertheless, the fraction trapped may be sufficient to enhance the apparent solubility of gedunin. XRD results showed the formation of new solid crystalline phase. The results obtained by different characterization techniques clearly indicated that both kneading and freeze-drying methods led to inclusion complex formation which may enhance oral administration of gedunin.

scholarly journals Synthesis of Thiophenyl Thiazole Based Novel Quinoxaline Derivatives

2015 ◽  
Vol 51 ◽  
pp. 115-124
Author(s):  
Haresh G. Kathrotiya ◽  
Yogesh T. Naliapara
Keyword(s):  
Aromatic Amine ◽  
Elemental Analysis ◽  
Condensation Reaction ◽  
High Yield ◽  
Experimental Procedure ◽  
H Nmr ◽  
Quinoxaline Derivatives ◽  
Ft Ir ◽  
C Nmr

A new series of thiophenyl thiazole based novel quinoxaline derivatives 4a-4t have been synthesized by base catalysed condensation reaction. In which 6-substituted 2,3-dichloroquinoxaline 1a and 4-(thiophen-2-yl) thiazol-2-amine 2b reacted in basic condition to afford intermediate 3c which reacts with various aromatic amine to form final compounds. Easy experimental procedure, high yield, and selectivity are the imperative features of this method. The identity of all the compounds has been established by 1H NMR, 13C NMR, FT-IR, and elemental analysis.

scholarly journals Synthesis of Tert-Octylsalicylaldoxime and Its Application in Extraction of Cu(II)

2021 ◽  
Vol 9 ◽  
Author(s):  
Liqing Li ◽  
Luo Feng ◽  
Chunfa Liao ◽  
Fangxu Li ◽  
Liqin Yang
Keyword(s):  
Elemental Analysis ◽  
Extraction Ability ◽  
One Pot ◽  
H Nmr ◽  
Alkyl Groups ◽  
Ft Ir ◽  
Copper Nickel Alloy ◽  
The One ◽  
Yield And Purity ◽  
C Nmr

The alkyl salicylaldoxime has attracted more and more attention recently due to the complex branched alkyl groups. In this study, a novel alkyl salicylaldoxime, tert-octylsalicylaldoxime, was successfully synthesized by the one-pot method. The yield and purity by the elemental analysis were 96.17 and 94.13%, respectively. The structure was confirmed by elemental analysis, FT-IR, 1H NMR (Nuclear Magnetic Resonance), 13C NMR spectroscopy, and MS. Results showed that tert-octylsalicylaldoxime with a new structure exhibited excellent extraction ability and selectivity for Cu(II) and can be successfully used to recover Cu from copper-nickel alloy electroplating wastewater. Thus, this product has the potential to be used as a powerful copper extractant in the future.

Partially oxidized porphyrazines

2006 ◽  
Vol 10 (07) ◽  
pp. 996-1002 ◽  
Author(s):  
Ayhan Nazli ◽  
Ergün Gonca ◽  
Ahmet Gül
Keyword(s):  
Spectral Data ◽  
Elemental Analysis ◽  
Trifluoroacetic Acid ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Ft Ir ◽  
New Compounds

Magnesium porphyrazinate substituted with eight (1-naphthyl) groups on the peripheral positions has been synthesized by cyclotetramerization of 3,4-(1-naphthyl)pyrroline-2,5-diimine, 4-(1-naphthyl)pyrroline-2,5-diimine in the presence of magnesium butanolate. Its demetalation by treatment with trifluoroacetic acid, resulted in a partially oxidized product, namely, octakis(1-naphthyl)-2-seco-porphyrazine-2,3-dione. Further reaction of this product with copper(II) acetate, zinc(II) acetate and cobalt(II) acetate led to the metallo derivatives, [octakis(1-naphthyl)-2-seco-2,3-dioxoporphyrazinato]M(II) ( M = Cu , Zn or Co ). These new compounds have been characterized by elemental analysis, together with FT-IR, 1 H NMR, UV-vis and mass spectral data.

Novel mono- and heterobimetallic chromium−nickel s-indacene complexes: synthesis, characterization, and DFT studies

2014 ◽  
Vol 92 (7) ◽  
pp. 677-683 ◽  
Author(s):  
Cesar Morales-Verdejo ◽  
Eduardo Schott ◽  
Ximena Zarate ◽  
Juan Manuel Manriquez
Keyword(s):  
Cyclic Voltammetry ◽  
Elemental Analysis ◽  
Molecular System ◽  
Theoretical Calculations ◽  
Dft Studies ◽  
Nickel Compound ◽  
H Nmr ◽  
Bridging Ligand ◽  
Ft Ir ◽  
C Nmr

The preparation of a novel heterobimetallic chromium−nickel compound (3), including 2,6-diethyl-4,8-dimethyl-5-hydroindacenide (IcH′) as bridging ligand was successfully achieved and it was characterized by means of 1H NMR, 13C NMR, and FT-IR spectroscopies and elemental analysis. Cyclic voltammetry studies were performed for complex 3 as well as for its respective mononuclear species. Theoretical calculations of this compound were carried out to gain further understanding of this novel molecular system.

Seco-porphyrazines with eight (p-tolyl) and (o-tolyl) units

2008 ◽  
Vol 12 (02) ◽  
pp. 116-122 ◽  
Author(s):  
Ergün Gonca ◽  
Ümmü Gülsüm Baklaci ◽  
Hatice Akin Dinçer
Keyword(s):  
Spectral Data ◽  
Elemental Analysis ◽  
Trifluoroacetic Acid ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Ft Ir ◽  
First Time ◽  
Oxidized Products

Magnesium porphyrazinates substituted with eight (p-tolyl) and (o-tolyl) units on the peripheral positions have been synthesized for the first time by cyclotetramerization of 1,2-bis(p-tolyl)maleonitrile and 1,2-bis(o-tolyl)maleonitrile in the presence of magnesium butanolate. Their demetalation by the treatment with trifluoroacetic acid resulted in partially oxidized products, namely, octakis(p-tolyl)-2-seco-porphyrazine-2,3-dione and octakis(o-tolyl)-2-seco-porphyrazine-2,3-dione. Further reactions of these products with copper(II) acetate, zinc(II) acetate and cobalt(II) acetate have led to the metallo derivatives, [octakis(p-tolyl)-2-seco-2,3-dioxoporphyrazinato] M(II) and [octakis(o-tolyl)-2-seco-2,3-dioxoporphyrazinato] M(II) ( M = Cu , Zn , Co ). These novel compounds have been characterized by elemental analysis, together with FT-IR, 1H NMR, UV-vis and mass spectral data.

Synthesis, Characterization and Photophysicochemical Properties of Zinc(Ii) Phthalocyanine With New Benzenesulfonamide Derivative Substituents

2021 ◽  
Author(s):  
Gülen Atiye Öncül ◽  
Ömer Faruk Öztürk ◽  
Mehmet Pişkin
Keyword(s):  
Elemental Analysis ◽  
Mass Spectra ◽  
Spectroscopic Methods ◽  
H Nmr ◽  
Maldi Tof Mass Spectra ◽  
New Type ◽  
Ft Ir ◽  
Photochemical Properties ◽  
Photocatalytic Applications ◽  
C Nmr

Abstract Novel (E)-4-((5-bromo-2-hydroxy-3-methoxybenzylidene)amino)-N-(pyridin-2-yl)benzenesulfonamide 1, (E)-4-((5-bromo-2-(3,4-dicyanophenoxy)-3-methoxybenzylidene)amino)-N-(pyridin-2-yl)benzene sulfonamide 2 and 2(3),9(10),16(17),23(24)-tetra-[(E)-4-((5-bromo-3-methoxy-2-(λ1-oxidanyl)benzyl idene)amino)-N-(pyridine-2-yl)benzenesulfonamide]phthalocyaninato zinc(II) phthalocyanine 3 were synthesized. Their (1-3) structures were illuminated with spectroscopic methods such as FT-IR, 1H NMR,13C NMR, UV–vis, MALDI-TOF mass spectra and also elemental analysis. The spectroscopic, photophysical and photochemical properties of the zinc(II) phthalocyanine 3 were investigated in dimethyl sulfoxide and its effects on the above mentioned properties were reported as a result of containing new type benzenesulfonamide derivatives as substituents. In addition, its above-mentioned properties were reported by comparing different species with those of their substituted and/or unsubstituted counterparts. The zinc(II) phthalocyanine 3 has photosensitizing abilities suitable and sufficient especially for photocatalytic applications.

Sign in / Sign up

Export Citation Format

Share Document