3-Arylazo-2-thioxo-2,3-dihydro-1H-quinazolin-4-ones as Azodisperse Dyes for Dyeing Polyester Fabrics

Abdel‐Megeed, Mohamed F.; Azaam, Mohamed M.; El‐Hiti, Gamal A.

doi:10.1007/s00706-006-0582-1

Cited by 13 publications

(3 citation statements)

References 19 publications

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“…[82][83][84][85][86] Therefore, methods for the syntheses and/or modification of this ring system are always of interest. As part of our continuing interest in quinazoline chemistry [87][88][89][90][91][92][93][94][95][96][97][98][99][100][101] and in lithiation chemistry, [102][103][104][105][106][107][108][109][110][111][112][113] we have previously reported on the modification of the quinazoline ring system via lithiation and the organolithium reagents obtained from such reactions are very useful intermediates for the synthesis of substituted quinazoline derivatives that might be difficult to prepare by other means. 114 This review will concentrate on the work published in the general area of directed and regioselective ring-lithiation of various quinazoline derivatives.…”

Section: Dmgmentioning

confidence: 99%

Reactions of organolithium reagents with quinazoline derivatives

El‐Hiti¹,

Hegazy²,

Alotaibi³

et al. 2012

Arkivoc

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This review deals with directed and regioselective lithiation of various quinazoline derivatives by the use of alkyllithiums in anhydrous THF at low temperature. Reactions of the lithium reagents obtained from the lithiation reactions with a range of electrophiles give the corresponding substituted derivatives in high yields. The procedures are simple, efficient and general to provide derivatives which might be difficult to produce by other means. In some cases nucleophilic addition of alkyllithiums takes place to produce the corresponding addition products via 1,2-and 3,4-additions. In other cases nucleophilic substitution or halogen-lithium exchange reactions occur.

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Section: Dmgmentioning

confidence: 99%

Reactions of organolithium reagents with quinazoline derivatives

El‐Hiti¹,

Hegazy²,

Alotaibi³

et al. 2012

Arkivoc

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“…In general, quinazolines are comparatively easy to synthesize and numerous derivatives thereof have been synthesized for potential use as biologically active molecule and also used in the synthesis of diverse range of colored products [2][3][4][5][6][7]. A number of dyes have been prepared from amino quinazoline and several patents describe the synthesis and technical importance of heterocyclic azo reactive dyes [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of some new thermally stable reactive dyes having 4(3H)-quinazolinone molecule for the dyeing of silk, wool, and cotton fibers

Patel

2011

Fibers Polym

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Diazotized 3-{4-[2-chloro-4-amino-5-carboxybenzyl]-5-chloro-2-carboxyphenyl}-6-iodo-2-phenylquinazolin-4(3H)-one (4) was coupled with various p-nitro anilino cyanurated coupling components (6a-j) to give the corresponding quinazolinone based reactive dyes (7a-j) in reasonable yields. All the reactive dyes (7a-j) were characterized by spectroscopic technique and elemental analysis. These dyes were applied to silk, wool, and cotton fibers as reactive dyes and their spectroscopic data, colorimetric data, antimicrobial activity, thermal stability, and fastness properties were evaluated.

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“…As part of our continuing interest in organic synthesis [19][20][21][22], we have developed efficient syntheses of various substituted heterocycles [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Also, we have reported a simple and convenient approach for the synthesis of a series of azodisperse dyes [39]. We now report the successful synthesis of new azodisperse dyes containing -aminophosphonates and their application for dyeing polyester fabrics.…”

Section: Introductionmentioning

confidence: 99%

Diphenyl (4′‐(Aryldiazenyl)biphenyl‐4‐ylamino)(pyridin‐3‐yl)methylphosphonates as Azo Disperse Dyes for Dyeing Polyester Fabrics

Abdel‐Megeed¹,

Azaam

El‐Hiti

2012

Journal of Chemistry

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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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3-Arylazo-2-thioxo-2,3-dihydro-1H-quinazolin-4-ones as Azodisperse Dyes for Dyeing Polyester Fabrics

Cited by 13 publications

References 19 publications

Reactions of organolithium reagents with quinazoline derivatives

Reactions of organolithium reagents with quinazoline derivatives

Synthesis of some new thermally stable reactive dyes having 4(3H)-quinazolinone molecule for the dyeing of silk, wool, and cotton fibers

Diphenyl (4′‐(Aryldiazenyl)biphenyl‐4‐ylamino)(pyridin‐3‐yl)methylphosphonates as Azo Disperse Dyes for Dyeing Polyester Fabrics

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