کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
178190 | 459025 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of some novel pyrazolo[5,1-c][1,2,4]triazine derivatives and investigation of their absorption spectra
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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 novel pyrazolo[5,1-c][1,2,4]triazine derivatives and investigation of their absorption spectra Synthesis of some novel pyrazolo[5,1-c][1,2,4]triazine derivatives and investigation of their absorption spectra](/preview/png/178190.png)
چکیده انگلیسی
In this study, 5-amino-4-hetarylazo-3-methyl-1H-pyrazoles were diazotised and coupled with malononitrile and ethyl cyanoacetate to give pyrazolylazo malononitriles and ethyl pyrazolylazo cyanoacetate, respectively. Ten novel pyrazolo[5,1-c][1,2,4]triazine dyes were synthesized by heating of pyrazolylazo malononitriles and ethyl pyrazolylazo cyanoacetate in glacial acetic acid. The dyes were characterized by elemental analysis and spectral methods. The solvatochromic behaviour of these diazo dyes in various solvents was evaluated. Substituent, acid and base effects on the visible absorption maxima of the dyes are also reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 76, Issue 1, 2008, Pages 97–103
Journal: Dyes and Pigments - Volume 76, Issue 1, 2008, Pages 97–103
نویسندگان
Fati Karcı, Fikret Karcı,