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Acidic tributyl phosphonium-based ionic liquid: an efficient catalyst for preparation of diverse pyridine systems via a cooperative vinylogous anomeric-based oxidation.

ABSTRACT: In this study, an acidic phosphonium-based ionic liquid, namely tributyl(3-sulfopropyl)phosphonium trifluoroacetate, was designed and synthesized via a facile and green route. From an accurate perspective, the structure of the prepared ionic liquid was investigated using FT-IR, 1H NMR and 13C NMR spectroscopies, and EDX, elemental mapping and TGA/DTG analysis. In this intensive research, catalytic application of tributyl(3-sulfopropyl)phosphonium trifluoroacetate was explored for the preparation of diverse pyridine systems such as triaryl pyridines, 2-amino-3-cyanopyridines and indolyl pyridines via a cooperative vinylogous anomeric-based oxidation (CVABO). The observed results proved that prepared acidic phosphonium-based ionic liquid is a effective catalyst for the multicomponent synthesis of pyridines.

SUBMITTER: Jalali-Mola S 

PROVIDER: S-EPMC9724129 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Acidic tributyl phosphonium-based ionic liquid: an efficient catalyst for preparation of diverse pyridine systems <i>via</i> a cooperative vinylogous anomeric-based oxidation.

Jalali-Mola Sepideh S   Torabi Morteza M   Yarie Meysam M   Zolfigol Mohammad Ali MA  

RSC advances 20221101 53

In this study, an acidic phosphonium-based ionic liquid, namely tributyl(3-sulfopropyl)phosphonium trifluoroacetate, was designed and synthesized <i>via</i> a facile and green route. From an accurate perspective, the structure of the prepared ionic liquid was investigated using FT-IR, <sup>1</sup>H NMR and <sup>13</sup>C NMR spectroscopies, and EDX, elemental mapping and TGA/DTG analysis. In this intensive research, catalytic application of tributyl(3-sulfopropyl)phosphonium trifluoroacetate was  ...[more]

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