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Journal articles on the topic 'Azo disperse dyes diazotization coupling fastness properties'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Hassan, Khalid, El-khabiry Shaban, Ghada M. ElHaddad, Asmaa B. Sallam, and Ibrahim El Sayed. "Synthesis, characterization, and antibacterial activity of azodyes incorporated acridine chromophore and their applications in polyester printing." Current Chemistry Letters 11, no. 1 (2022): 83–94. http://dx.doi.org/10.5267/j.ccl.2021.9.002.

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A series of azo dyes incorporated acridine chromophore labelled as 8 (a-d), 10 (a, b), 12 and 14 were prepared in very good yields starting from 9-chloroacridine 1 followed by amination, diazotization and coupling either with rhodanine analogues 6 (a, b) or other coupling partners 9 (a, b), 11 and 13. FT-IR, 1H NMR, and mass spectroscopic analysis were used to establish the structures of the produced azo dispersed dyes. Moreover, the synthesized azo dyes were used to prepare pastes that were used to print polyester fabric using classic silk-screen printing techniques. The dyes were tested for

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Mohamed, Fatma A., A. A. Mousa, R. Farouk, Y. A. Youssef, Y. A. Youssef, and Y. A. Youssef. "Union Dyeing of Wool/Polyester Blend Fabric Using Sulphatoethylsulphone Dye Derivative of C.I. Disperse Yellow 23." Research Journal of Textile and Apparel 19, no. 2 (2015): 26–33. http://dx.doi.org/10.1108/rjta-19-02-2015-b004.

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This paper aims to synthesise, characterise and find out the properties of a model dye for convenient union dyeing of wool, polyester and wool/polyester blend fabric compared with C.I. Disperse Yellow 23. The reactive disperse dye was prepared containing sulphatoethylsulphone (SES) as a reactive group. The dye was synthesised by diazotization and coupling reaction. Firstly, we synthesized azo dye intermediate I using 1-aminobenzene-4-sulphatoethylsulphone diazotized and then coupled it with aniline. The synthesized azo dye intermediate I was diazotized and coupled with phenol to give dye 2. Di

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3

Anita, Gour*1 Shirin Imam2 &. Niharika Shivhare3. "ANALYSIS AND PREPARATION OF AZO DISPERSE DYE C25H21N5O5." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 4, no. 12 (2017): 129–32. https://doi.org/10.5281/zenodo.1133322.

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Disperse Dyes are aromatic heterocyclic organic compound. Advances over the last decade concerning the synthesis, properties and application of azo disperse dyes prepared from diazo components containing aromatic heterocycles are discussed here. Preparation of some novel disperse azo dyes synthesized by the coupling component of diazonium salt 1-(4-Aminophenyl)- 4 -(4-methoxy-3-methylphenyl)-5-((4-nitrophenylhydrazono)-2, 6-(1H)-Pyridinedione (29A)1to give the corresponding various azo disperse dyes (A-E). these dyes were applied to polyster fabric and their fastness properties were evaluated.

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4

Abdel-Megeed, Mohamed F., Mohamed M. Azaam, and Gamal A. El-Hiti. "Diphenyl (4′-(Aryldiazenyl)biphenyl-4-ylamino)(pyridin-3-yl)methylphosphonates as Azo Disperse Dyes for Dyeing Polyester Fabrics." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/308419.

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Diphenyl (4′-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate(1)was synthesized in 88% yield from reaction of pyridine-3-carboxaldehyde with benzidine and triphenylphosphite in the presence of titanium tetrachloride as a catalyst. Diazotization of1gave the corresponding diazonium salt2which was coupled with several hydroxyl or amino compounds to give the corresponding azo dyes3–8in 82–88% yields after crystallization. The dyes produced were applied to polyesters as disperse dyes and their fastness properties were elevated.

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5

Mijin, Dusan, Gordana Uscumlic, Natasa Valentic, and Aleksandar Marinkovic. "Synthesis of azo pyridone dyes." Chemical Industry 65, no. 5 (2011): 517–32. http://dx.doi.org/10.2298/hemind110428037m.

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Over 50% of all colorants which are used nowdays are azo dyes and pigments, and among them arylazo pyridone dyes (and pigments) have became of interest in last several decades due to the high molar extinction coefficient, and the medium to high light and wet fastness properties. They find application generally as disperse dyes. The importance of disperse dyes increased in the 1970s and 1980s due to the use of polyester and nylon as the main synthetic fibers. Also, disperse dyes were used rapidly since 1970 in inks for the heat-transfer printing of polyester. The main synthetic route for the pr

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6

Cheng, Yu-Wen, Jean-Sebastien Benas, Fang-Cheng Liang, et al. "Red Disperse Azo Dye Side Chains Influence on Polyethylene Terephthalate Dyeing Performances in Supercritical Carbon Dioxide Media." Polymers 14, no. 24 (2022): 5487. http://dx.doi.org/10.3390/polym14245487.

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Supercritical carbon dioxide dyeing (SDD) as a dyeing media not only provides a friendly dyeing environment but also significantly increases polymeric dyeing performances ascribed to strong azo dye affinity. Disperse azo dyes have shown to be highly efficient dyeing agents due to their facile coupling synthesis, side chains position, and length tunability to optimize absorption properties. Herein, we first synthesize two series of disperse red azo dyes via a coupling chemical route. Further, we investigate the position of the electron withdrawing group and alkyl chains length impact onto the a

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7

Abu-Melha, Sraa. "Synthesis of novel biologically active thiazole dyes and their applications." Pigment & Resin Technology 48, no. 5 (2019): 375–82. http://dx.doi.org/10.1108/prt-09-2018-0102.

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Purpose This study aims to focus on the possibility of developing new thiazole azo dyes with good colouristic application properties, biological and pharmacological activities. Design/methodology/approach Coupling of curcumin with different aromatic diazonium salts of 2-amino thiazole derivatives, such as 2-aminobenzothiazole, 2-amino-5-phenylthiazole, 2-amino-5-methylthiazole and 2-amino-5-nitrothiazole-produced novel azo dyes. Structures of all synthesised dyes were fully confirmed via spectroscopic and analytical methods. Those compounds were examined for their antimicrobial, anticancer and

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8

Otutu, O. J., and A. K. Asiagwu. "Synthesis and Application to Polyester and Nylon 6 Fabrics of Hetaryl Bis-Azo Disperse Dyes Based on 6-Amino-2,4-Dihydroxypyrimidine and 4-Methoxy-2-Nitroaniline Moieties." Journal of Scientific Research 11, no. 2 (2019): 215–24. http://dx.doi.org/10.3329/jsr.v11i2.38734.

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Six new bis-azo disperse dyes were synthesized by linking various aryl amino and hydroxyl derivatives to 4-methoxy-2-nitroaniline and 6-amino-2,4-dihydroxypyrimidine moieties through diazo coupling reactions. The structures of the bis-azo dyes were identified by Fourier transform infrared, proton and carbon 13 nuclear magnetic resonance data. The prepared dyestuffs were applied onto polyester and nylon 6 fabrics and subsequently their fastness properties in terms of light, washing, sublimation and rubbing were determined. Compared with the light fastness of polyester fabrics, the light fastnes

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9

Abomelha, Hanna. "Synthesis of novel dyes based on thiophene analogues with antibacterial activity for dyeing polyester fabrics." Pigment & Resin Technology 48, no. 4 (2019): 337–47. http://dx.doi.org/10.1108/prt-02-2018-0012.

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Purpose This study aims to the synthesis of some novel 4-arylazo-3-hydroxythiophene analogues containing sulphapyridine and sulphathiazole dyestuffs and studying their application in dyeing polyester fabrics and rendering their antibacterial efficacy. Design/methodology/approach Simultaneous dyeing and antibacterial finishing for polyester fabric using a new antibacterial disperse dye having a modified chemical structure to thiophene dyes were studied. Construction of the thiophene dyes was carried out by diazo-coupling of diazotized sulphonamide-containing heterocyclic rings sulphapyridine an

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10

Gaffer, Hatem, Mounir Salem, and Magda Marzouk. "Synthesis of 4-hydroxy coumarin dyes and their applications." Pigment & Resin Technology 45, no. 5 (2016): 320–29. http://dx.doi.org/10.1108/prt-09-2014-0071.

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Purpose The present study aims to focus on the possibility of developing new eco-friendly azo dyes with good colouristic application properties, exhibiting biological and pharmacological activities. Design/methodology/approach Coupling of 4-hydroxycoumarin with a variety of aromatic diazonium salts of 2-aminothiazole, 2-aminobenzothiazole, 4-aminoantipyrine, 4-aminoacetophenone, adenine sulphate, a-naphthylamine and sulphadimidine to produce novel azo dyes. The compounds were fully characterised using spectroscopic and analytical methods. All of the compounds were tested for their antimicrobia

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11

Cheng, Yu-Wen, Jean-Sebastien Benas, Fang-Cheng Liang, et al. "Synthesis of Azo Disperse Dyes with High Absorption for Efficient Polyethylene Terephthalate Dyeing Performances in Supercritical Carbon Dioxide." Polymers 14, no. 15 (2022): 3020. http://dx.doi.org/10.3390/polym14153020.

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Supercritical carbon dioxide dyeing (SCDD) not only enables strong dyeing performance for a versatile range of polymer material but is also regarded as a green chemical media due to its low environmental impact as well as low risk of product denaturation. Over the decades, azo disperse dyes have been revealed to be efficient dyes and represent the wide majority of dyeing material. Azo dyes possess a wide variety of functional groups to optimize dye synthesis and tune the light absorption properties. Using SCDD, end-chain of different lengths, and functional group exhibiting various electronic

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12

Obi, Juliana Chineze, and Paul Chukwudi Osunwa. "UV and IR Characterization of Monoazo Disperse Dyes Synthesized from Aminobenzene and its Derivatives." Scholars International Journal of Chemistry and Material Sciences 5, no. 7 (2022): 122–27. http://dx.doi.org/10.36348/sijcms.2022.v05i07.001.

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The potential of amino benzene and its derivatives in the synthesis of monoazo disperse dyes was studied. The dyes were synthesized by the diazotization of amino benzene and its derivatives and subsequent coupling with salicylic acid. The synthesized dyes were subjected to UV and IR characterization and the UV-VIS absorption spectra of the dyes in methanol, ethanol and ethyl acetate revealed that the dyes have absorption bands within the visible region of the electromagnetic spectrum and that the λmax of the dyes increases with increase in polarity of the solvents. The FTIR characterization of

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13

Ahmed El-Apasery, Morsy, Mahmoud Elsayed Ahmed Abdellatif, Fathy Ahmed Yassin, and Sara Morsy Ahmed. "Syntheses of novel disperse dyes based on arylazophenols: Synthesis, characterizations and applications." Bulletin of the Chemical Society of Ethiopia 37, no. 4 (2023): 993–1002. http://dx.doi.org/10.4314/bcse.v37i4.15.

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ABSTRACT. Three compounds, phenyl propenone, p-tolyl propenone, and bromo phenylpropenone derivatives 3a-c were produced in good yields via condensation derivatives of acetophenone with dimethyl formamide dimethyl acetal (DMFDMA) in presence of xylene as a solvent. Compounds 5a-f were produced by coupling the enaminones 3a-c with diazonium chloride 4a or 4b. Compounds 5a-f were reacted with acetone to create novel disperse dyes 9a-f. Mass spectra, (FT-IR), elemental analysis, and 1H-NMR spectra were used to confirm the chemical structure of the new dyes. The new disperse dyes were used in dyei

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14

Ameuru, Umar, Mohammed Yakubu, Kasali Bello, Peter Nkeonye, and Azim Halimehjani. "Synthesis and dyeing performance of some amphiphilic naphthalimide azo disperse dyes on polyester fabrics." Journal of the Serbian Chemical Society 85, no. 10 (2020): 1253–64. http://dx.doi.org/10.2298/jsc190123049a.

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A series of monoazo disperse dyes were synthesized by coupling diazotized 4-amino-N-dodecyl-1,8-naphthalimide with N,N-dialkyl anilines and naphthol derivatives. The synthesized intermediates and the dyes were characterized using FTIR, 1H-NMR, 13C-NMR, mass spectroscopy and elemental analysis (CHN). Visible absorption spectra of the dyes were examined in solvents of different polarities. The electronic absorption spectra cover a wavelength (?max) range of 515-535 nm in DMF at uniformly absorption intensity between 1.59-3.00?104 L mol-1 cm-1. The dyes gave deep and bright intense hues of light

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15

Mungmeechai, T., Suesat Jantip, and P. Suwanruji. "Study of the Relationships between the Chemical Structures of Azo Disperse Dyes and their Dyeing Properties on Polyester." Advanced Materials Research 93-94 (January 2010): 332–35. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.332.

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A series of azo disperse dyes was synthesized using 4-nitro aniline and 2-chloro-4-nitro aniline as diazo components. The coupling components were N,N-diethyl aniline, N,N-bis-β-hydroxyethyl aniline, N,N-bis-β-acetoxyethyl aniline, N,N-diethyl-m-toluidine, N,N-bis-β-hydroxyethyl-m-toluidine and N,N-bis-β-acetoxyethyl-m-toluidine. The structures of the synthesized dyes were confirmed by TLC, 1H NMR and elemental analysis. The spectroscopic properties of the dyes when dissolved in the organic solvents viz. ethyl acetate and methyl benzoate, were investigated. The absorption spectra of the dyes s

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16

Mirkovic, Jelena, Gordana Uscumlic, Aleksandar Marinkovic, and Dusan Mijin. "Azo-hydrazone tautomerism of aryl azo pyridone dyes." Chemical Industry 67, no. 1 (2013): 1–15. http://dx.doi.org/10.2298/hemind120309053m.

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In the last three or four decades disperse dyes derived from pyridones (in particular azo pyridone dyes) have gained in importance, and are widely used in various fields. These compounds have excellent coloration properties, and are suitable for the dyeing of polyester fabrics. Basic features of these dyes are simplicity of their synthesis by diazotation and azo coupling. They generally have high molar extinction coefficient with medium to high light and wet fastness. The absorption maxima of these dyes show their visible absorption wavelength ranging from yellow to orange, which can be attrib

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17

Hadiza, Jibril Abdullahi. "SYNTHESIS AND STUDY OF DYEING PROPERTIES OF HETEROCYCLIC DISPERSE DYES DERIVED FROM 2- AMINOBENZOTHIAZOLE." May 27, 2019. https://doi.org/10.5281/zenodo.3274603.

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Monoazo heterocyclic disperse dyes were synthesized from 2- Amino benzothiazole by diazotization of 2- Aminobenzothiazole and coupling with 1-Naphthylamine, 1- Naphthol and 2-Napthol.The synthesized dyes were applied to nylon, polyester and acrylic fabrics by Drapkira?s method. The fastness properties of the dyed fabrics to light and wash were evaluated, other physical characteristics of the dyes such as melting temperature, and light absorption in the visible spectrum has also been determined. It was observed that these dyes have high wash fastness for the fabrics while their fastness to ligh

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18

Omar, Alaa Z., Asmaa M. Khamis, Ezzat A. Hamed, et al. "Synthesis, characterization, and application of novel aryldiazenyl disperse dyes on polyester fabrics." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-48368-y.

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AbstractAzo dyes are widely used for dyeing polyester fabrics but require optimization of properties like color strength and fastness. Fourteen novel disperse azo dyes were synthesized from 2,3-naphthalenediol and aniline derivatives to examine their potential for polyester dyeing. The dyes were prepared via diazotization and coupling reactions and characterized using FT-IR, UV–Vis, 1H NMR, 13C NMR, and elemental analysis. Furthermore, several techniques were employed to study the azo-hydrazone tautomerism, including UV–Vis spectroscopy, NMR spectroscopy, and computational methods. DFT computa

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A. Kucha, Navinkumar, Manishkumar J. Tank, and G. M. Malik. "SYNTHESIS, CHARACTERIZATION AND DYEING PERFORMANCE OF MONO AZO DISPERSE DYES BASED ON 2-AMINO 5-(4'-NITRO PHENYL) 1,3,4-THIADIAZOLE MOIETY." INDIAN JOURNAL OF APPLIED RESEARCH, October 1, 2021, 54–57. http://dx.doi.org/10.36106/ijar/3813784.

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In this paper synthesis of some new mono azo disperse dyes based on 2-amino 5-(4'-nitro phenyl) 1,3,4-thiadiazole moiety has been reported. Preparation of mono azo disperse dyes via condensation and nally diazotization of substituted primary amine and condensed with N-(4-(4'-chlorophenyl)thiazol-2-yl)-2-((5-(4'-nitrophenyl)-1,3,4-thiadiazol-2-yl)amino)acetamide (RR) to 1 give a series of mono azo dyes (RR -RR ). All the dyes were characterized by IR, H NMR, UV-Visible and elemental analysis and their dyeing 1 15 performance evaluated using High Temperature High Pressure method (HTHP) at 130°C

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Obi, Juliana Chineze, Emmanuel Ifeanyi Victor, Azubuike Jeremiah Okolo, et al. "Synthesis of Monoazo Dyes From Halogenated Arylamines and Fastness Properties on Cotton and Nylon." Multidisciplinary Journal for Applied Research in Engineering and Technology 2, no. 2 (2022). http://dx.doi.org/10.54228/mjaret02220003.

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Some varieties of monoazo disperse dyes derived from halogenated arylamines were synthesized by simple diazotization and coupling to 1 and 2-naphthols. The impure dyes were recrystallized from ethanol solvent. Interestingly, all the dyes synthesized have colouristic properties. The purity and structural identities of the dyes obtained were confirmed by melting point, UV and IR spectrometry. The UV spectra of all the dyes synthesized revealed solvatochromism in solvent of different polarities and also halochromism. Fastness properties showed that all the dyes had better fastness properties on c

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"A Facile Synthesis with One Step of Disperse Azo Dyes to be Applied as Nano-Inks in Textile Printing." Biointerface Research in Applied Chemistry 11, no. 4 (2020): 11713–23. http://dx.doi.org/10.33263/briac114.1171311723.

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Simple one-step synthesis has been optimized to prepare heterocyclic azo dyes using silica-supported boron tri-fluoride (BF3.SiO2) as a catalyst to promote diazotization and combination of heterocyclic amines with different heterocyclic couplers at room temperature. The structure of the synthesized compounds was proved using different techniques. Nano inks were prepared by microencapsulation technique using these synthesized dyes under ultra-sonication for 10 min. The inks were used in digital printing techniques for cotton and polyamide fabrics. The fastness properties of the prints were meas

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Elkhabiry, Shaban, Afrah Sharaf, Mohamed E. Sadek, Manar E. A. Elasasy, Ahmed A. El-Sayed, and Abdalla Mousa. "Azo disperse dyes based on citrazinic acid: synthesis, antibacterial activity and printing application in silk and polyamide-6 fabrics." Pigment & Resin Technology, November 29, 2024. http://dx.doi.org/10.1108/prt-06-2024-0061.

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Purpose This study aims to dye Silk and polyamide fabrics using synthetic dyes to give the fabrics fastness qualities, including washing, perspiration, light, rubbing and sublimation fastness, also to be effective against bacteria. Design/methodology/approach We used the coupling of diazonium salts of aniline derivatives with 2,6-dihydroxyisonicotintic acid to prepare substituted azo citrazinic acid. By using synthetic thickeners as a thickening agent, the screen printing process of these dyes is found to have printing characteristics. Findings The authors developed and produced a range of bio

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23

Obi, Juliana Chineze, Emeka Friday Onuh, Emmmanuel Ifeanyi Victor, et al. "SYNTHESIS OF VARIETIES OF MONOAZO DISPERSE DYES DERIVED FROM AMINOBENZENE DERIVATIVES." Multidisciplinary Journal for Applied Research in Engineering and Technology II, no. 4 (2022). http://dx.doi.org/10.54228/mjaret06220002.

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Varieties of disperse dyes derived from amino benzene derivatives (figure 1) were synthesized by diazotization and coupling to phenol and salicylic acid. The impure dyes obtained were recrystalized using ethanol solvent. Attractively, all the dyes synthesized showed moderate to good colouristic characteristics. The purity and structural identities of the dyes were confirmed by melting point, UV and IR spectrometry. The UV spectra of the dyes revealed solvatochromism in solvent of different polarities. Dyeing was carried out on nylon, cotton and polyester fabrics. Amazingly, nylon gave the deep

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24

Jin, Liang, Tao Qian, Yujun Cheng, et al. "Synthesis, recovery, and application of environmentally friendly disperse dyes with high light fastness." Textile Research Journal, November 30, 2023. http://dx.doi.org/10.1177/00405175231208023.

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Dye wastewater has attracted great attention due to high pollution and toxicity which can cause harm to the living environment. It is common for azo-disperse dyes to be used to dye hydrophobic fibers. A reduction clearing method is used to eliminate the dye particles on the fabric after dyeing. However, when azo disperse dyes on the fiber surface are eliminated by the reduction clearing process, this can give rise to an effluent discharge due to the presence of sodium hydrosulfite. The introduction of carboxylic ester groups into dye molecules can effectively avoid this issue. Six novel enviro

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Joyce Eko, Ishegbe, Bello Kasali Ademola, Nkeonye Peter Obinna, and A. A. Kogo. "Synthesis and Structural-reactivity Studies of Bifunctional MCT/SES (Monochlorotriazine/ Sulphatoethylsulphone) Azo Reactive Disperse Dyes Applied to Wool and Polyester Fabric." Chemical Science International Journal, March 28, 2019, 1–10. http://dx.doi.org/10.9734/csji/2019/v26i330094.

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Reactive disperse dyes containing monochlorotriazine/sulphatoethylsulphone reactive moieties were synthesized by condensing aniline with cyanuric chloride and further reacting it with a series of monoazo dyes obtained by diazotising 1-aminobenzene-4-β-sulphatoethylsulphone and coupling with various substituted 2-amino-4-phenylthiazole derivatives. The dyeing performance of the dyes was evaluated on polyester and wool fabrics. The dyes obtained gave various shades ranging from reddish to bright red colours. They had good depth and good levelling properties. They dyed fabrics showed moderate to

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El-Rahman, Mohamed A., Alaa Z. Omar, Alshimaa R. Kandeel, Ezzat A. Hamed, Mohamed A. El-Atawy, and Reda M. Keshk. "Synthesis, characterization, and polyester dyeing performance of azo barbituric and thiobarbituric acid disperse dyes." Scientific Reports 15, no. 1 (2025). https://doi.org/10.1038/s41598-025-96473-x.

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Abstract This study explores the synthesis, characterization, and application of 23 azo disperse dyes synthesized based on barbituric and thiobarbituric acid derivatives for polyester coloration. The dyes were synthesized via the coupling of diazotized aniline derivatives with barbituric and thiobarbituric acid derivatives. The structures of these synthesized dyes are assigned using FT-IR and1H NMR spectroscopy. UV-Vis spectroscopy revealed absorption maxima ranging from 360 to 440 nm, with good correlation between experimental and theoretical values calculated using TD-DFT. The dyes exhibited

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Abdelwahab, Hamada, Fatimah A.M. Al-Zahrani, Ali A. Ali, Ammar Mahmoud, and Long Lin. "New thiadiazol azo disperse dyes derivatives and their application as a colored material for silk screen-printing ink for printing on polyester fabric." Pigment & Resin Technology, September 30, 2022. http://dx.doi.org/10.1108/prt-07-2022-0088.

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Purpose This paper aims to synthesize new screen-printing ink formula based on new derivatives of azo thiadiazol disperse dyes and evaluate their characteristics after being printed on polyester fabric substrates. Design/methodology/approach New dispersed dyes based on 1, 3, 4-Thiadiazole derivatives (dyes 1 and 2) were prepared and confirmed by different analyses, infrared (IR), mass and nuclear magnetic resonance (NMR) spectroscopy, and then formulated as colored materials in the screen-printing ink formulations. Printing pastes containing the prepared dyestuffs and other ingredients were us

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Hekal, Hend A., Omar M. Hammad, Nasser R. El-Brollosy, Mohamed Abdelraof, and Elkhabiry Shaban. "Synthesis, Characterization, and Printing Applications of Heterocyclic Pyrimidine Azo Dyes on Polyester Fabrics as Potential Antibacterial Agents." Fibers and Polymers, April 24, 2025. https://doi.org/10.1007/s12221-025-00946-9.

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Abstract We have synthesized and generated a range of bioactive dispersed dyes that may be joined with pyrimidine moieties inside the same construct via an azo linker, thus taking advantage of both compounds’ bioactive properties. Through a straightforward process, the heterocyclic azo-disperse dyes 3a–l were produced by diazo coupling aryldiazonium chloride derivatives with 2-(4-hydroxyphenyl)amino-6-oxo-4-phenyl-1,6-dihydropyrimidine-5-carbonitrile (2) in good yields. Mass spectroscopy, elemental analysis, FT-IR, 1H-NMR, and 13C-NMR characterized and confirmed the newly synthesized compounds

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