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Facile Synthesis of Pyrrolyl-Containing Semisquaraines in Water as Precursors for Non-Symmetric Squaraines

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MDPI AG
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12/28/2022
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Abstract
One-step reactions between squaric acid and pyrroles, such as 3-ethyl-2,4-dimethyl-pyrrole and 1,2,5-trimethylpyrrole, in water provide the corresponding pyrrol-2-yl- and pyrrol-3-yl-containing semisquaraines in high yields. These semisquaraines serve as useful precursors for the synthesis of various non-symmetric pyrrole-containing squaraine dyes.
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Chemistry and Biochemistry
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URI
https://doi.org/10.3390/compounds3010002
 https://repository.tcu.edu/handle/116099117/64156
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