POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.

POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.

There are synthesized various types of polymethine dyes from trifluoromethylthiazo­lo(3,2-a)pyrimidinium and trifluoromethyl­pyrimido(2,1-b)benzthiazolium perchlorates various types of polymethine dyes were obtained – styryls, monomethinecyanines, symmetrical and asymmetrical carbocyanines, merocyan...

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Date:2023
Main Authors: Shulga, Sergii, Shulga, Oksana
Format: Article
Language:English
Published: V.I.Vernadsky Institute of General and Inorganic Chemistry 2023
Online Access:https://ucj.org.ua/index.php/journal/article/view/552
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Journal Title:Ukrainian Chemistry Journal

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Ukrainian Chemistry Journal
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spelling oai:ojs2.1444248.nisspano.web.hosting-test.net:article-5522023-08-10T12:23:09Z POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE. Shulga, Sergii Shulga, Oksana trifluoromethylthiazolo(3,2-a)py­rimidinium, trifluoromethylpyrimido(2,1-b)-­benz­thiazolium, polymethine dyes, absorption spectra, the intensity. There are synthesized various types of polymethine dyes from trifluoromethylthiazo­lo(3,2-a)pyrimidinium and trifluoromethyl­pyrimido(2,1-b)benzthiazolium perchlorates various types of polymethine dyes were obtained – styryls, monomethinecyanines, symmetrical and asymmetrical carbocyanines, merocyanines. The absorption maxima and their intensities are determined for each dye, absorption characteristics curves and elemental analysis data for Carbon, Hydrogen and Sulfur are provided. As a result of the dyes absorption maxima analysis containing a tri­-fluoromethyl group in the pyrimidine ring and synthesized in this reaserch with the absorption maxima of dyes without a trifluoromethyl group in the pyrimidine ring, the bathochromic effect of the trifluoromethyl group on the dyes absorption maxima was established. The phenyl in the fifth position of the thiazole ring causes a bathochromic shift of the dye absorption maximum. There are characteristics of the absorption curve. The α- and γ-deriva­tives of monocyanines have a significant difference. The curve is flat with one absorption maximum for α-derivatives.The curve is narrower and contains two absorption maxima for γ-derivatives. The absorption curves of merocyanines also contain two maxima. The results of elemental analysis for Carbon, Hyd­rogen and Sulfur are presented. The resulting polymethine dyes are easily synthesized from thiazolo(3,2-a)pyrimidinium and pyramido­(2,3-b)benzthiazole in an acetic anhydride me­dium with product output at least 41%. The styrene product output are 53–93%. Synthesized dyes are crystallized from acetic anhydride. Symmetrical carbocyanines are crystallized from dimethylformamide. V.I.Vernadsky Institute of General and Inorganic Chemistry 2023-06-26 Article Article Organic chemistry Органическая xимия Органічна xімія application/pdf https://ucj.org.ua/index.php/journal/article/view/552 10.33609/2708-129X.89.05.2023.26-36 Ukrainian Chemistry Journal; Vol. 89 No. 5 (2023): Ukrainian Chemistry Journal; 26-36 Украинский химический журнал; Том 89 № 5 (2023): Ukrainian Chemistry Journal; 26-36 Український хімічний журнал; Том 89 № 5 (2023): Ukrainian Chemistry Journal; 26-36 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/552/282
institution Ukrainian Chemistry Journal
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datestamp_date 2023-08-10T12:23:09Z
collection OJS
language English
topic_facet trifluoromethylthiazolo(3,2-a)py­rimidinium
trifluoromethylpyrimido(2,1-b)-­benz­thiazolium
polymethine dyes
absorption spectra
the intensity.
format Article
author Shulga, Sergii
Shulga, Oksana
spellingShingle Shulga, Sergii
Shulga, Oksana
POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
author_facet Shulga, Sergii
Shulga, Oksana
author_sort Shulga, Sergii
title POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
title_short POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
title_full POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
title_fullStr POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
title_full_unstemmed POLYMETHYNE DYES WITH THIAZOLO (3,2-a)PYRIMIDINE AND PYRIMIDO(2,1-b)BENZTHIAZOLE SALTS WITH A TRIFLUOROMETHYL GROUP IN THE PYRIMIDINE CYCLE.
title_sort polymethyne dyes with thiazolo (3,2-a)pyrimidine and pyrimido(2,1-b)benzthiazole salts with a trifluoromethyl group in the pyrimidine cycle.
description There are synthesized various types of polymethine dyes from trifluoromethylthiazo­lo(3,2-a)pyrimidinium and trifluoromethyl­pyrimido(2,1-b)benzthiazolium perchlorates various types of polymethine dyes were obtained – styryls, monomethinecyanines, symmetrical and asymmetrical carbocyanines, merocyanines. The absorption maxima and their intensities are determined for each dye, absorption characteristics curves and elemental analysis data for Carbon, Hydrogen and Sulfur are provided. As a result of the dyes absorption maxima analysis containing a tri­-fluoromethyl group in the pyrimidine ring and synthesized in this reaserch with the absorption maxima of dyes without a trifluoromethyl group in the pyrimidine ring, the bathochromic effect of the trifluoromethyl group on the dyes absorption maxima was established. The phenyl in the fifth position of the thiazole ring causes a bathochromic shift of the dye absorption maximum. There are characteristics of the absorption curve. The α- and γ-deriva­tives of monocyanines have a significant difference. The curve is flat with one absorption maximum for α-derivatives.The curve is narrower and contains two absorption maxima for γ-derivatives. The absorption curves of merocyanines also contain two maxima. The results of elemental analysis for Carbon, Hyd­rogen and Sulfur are presented. The resulting polymethine dyes are easily synthesized from thiazolo(3,2-a)pyrimidinium and pyramido­(2,3-b)benzthiazole in an acetic anhydride me­dium with product output at least 41%. The styrene product output are 53–93%. Synthesized dyes are crystallized from acetic anhydride. Symmetrical carbocyanines are crystallized from dimethylformamide.
publisher V.I.Vernadsky Institute of General and Inorganic Chemistry
publishDate 2023
url https://ucj.org.ua/index.php/journal/article/view/552
work_keys_str_mv AT shulgasergii polymethynedyeswiththiazolo32apyrimidineandpyrimido21bbenzthiazolesaltswithatrifluoromethylgroupinthepyrimidinecycle
AT shulgaoksana polymethynedyeswiththiazolo32apyrimidineandpyrimido21bbenzthiazolesaltswithatrifluoromethylgroupinthepyrimidinecycle
first_indexed 2025-09-24T17:43:51Z
last_indexed 2025-09-24T17:43:51Z
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