کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10266569 | 459053 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of some new azo pyrazolo[1,5-a]pyrimidine-thieno[2,3-b]pyridine derivatives and their application as disperse dyes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis of some new azo pyrazolo[1,5-a]pyrimidine-thieno[2,3-b]pyridine derivatives and their application as disperse dyes Synthesis of some new azo pyrazolo[1,5-a]pyrimidine-thieno[2,3-b]pyridine derivatives and their application as disperse dyes](/preview/png/10266569.png)
چکیده انگلیسی
The 3-amino-4,6-disubstituted-thieno[2,3-b]pyridines were diazotized and coupled with 3-aminocrotononitrile to give the 3-(2-hydrozone-3-ketimino-butyronitrile)-4,6-disubstituted-thieno[2,3-b]pyridines which can react with 85% excess hydrazine hydrate to afford the corresponding 3-(5-amino-3-methyl-pyrazol-4-yl)-azo-4,6-disubstituted-thieno[2,3-b]pyridines. The 3-(2-methyl-5,7-disubstituted-pyrazolo[1,5-a]pyrimidine-3-yl)azo-4,6-disubstituted-thieno[2,3-b]pyridine dyes were obtained by the cyclocondensation reaction of 3-(5-amino-3-methyl-pyrazol-4-yl)-azo-4,6-disubstituted-thieno[2,3-b]pyridines with the appropriate 1,3-diketones under acidic condition. The dyes were applied to polyester fibers and their spectral characteristics and fastness properties measured.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 64, Issue 3, March 2005, Pages 223-230
Journal: Dyes and Pigments - Volume 64, Issue 3, March 2005, Pages 223-230
نویسندگان
Yuh Wen Ho,