Abstract
A new approach for aminodehalogenation reaction between 3-chloropyrazine-2-carboxamide and ringsubstituted anilines is described. A series of 16 compounds (15 of them novel) derived from pyrazinamide have been synthesized successfully using the advantage of microwave-assisted reaction. The conditions for this aminodehalogenation reaction have been put to investigation to optimize the conversion, yield and time. The final methodology reduces the time needed for reaction from 24 hours using conventional heating to 30 minutes under microwave irradiation and increases the yield. The synthetic procedure together with analytical data of all compounds is presented. Lipophilicity properties were calculated and experimentally determined.
Keywords: Aminodehalogenation, aniline, carboxamide, heterocycles, microwave synthesis, pyrazinamide, tuberculosis.
Current Organic Synthesis
Title:Microwave-Assisted Synthesis of Pyrazinamide Derivatives: The Coupling Reaction of 3-Chloropyrazine-2-Carboxamide and Ring-Substituted Anilines
Volume: 12 Issue: 2
Author(s): Ondrej Jandourek, Martin Dolezal and Jiri Kunes
Affiliation:
Keywords: Aminodehalogenation, aniline, carboxamide, heterocycles, microwave synthesis, pyrazinamide, tuberculosis.
Abstract: A new approach for aminodehalogenation reaction between 3-chloropyrazine-2-carboxamide and ringsubstituted anilines is described. A series of 16 compounds (15 of them novel) derived from pyrazinamide have been synthesized successfully using the advantage of microwave-assisted reaction. The conditions for this aminodehalogenation reaction have been put to investigation to optimize the conversion, yield and time. The final methodology reduces the time needed for reaction from 24 hours using conventional heating to 30 minutes under microwave irradiation and increases the yield. The synthetic procedure together with analytical data of all compounds is presented. Lipophilicity properties were calculated and experimentally determined.
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Cite this article as:
Jandourek Ondrej, Dolezal Martin and Kunes Jiri, Microwave-Assisted Synthesis of Pyrazinamide Derivatives: The Coupling Reaction of 3-Chloropyrazine-2-Carboxamide and Ring-Substituted Anilines, Current Organic Synthesis 2015; 12 (2) . https://dx.doi.org/10.2174/1570179411999141106101501
DOI https://dx.doi.org/10.2174/1570179411999141106101501 |
Print ISSN 1570-1794 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6271 |
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Organic synthesis is a fundamental discipline in chemistry, crucial for the creation of complex molecules with diverse applications in pharmaceuticals, materials science, and beyond. However, the process of designing efficient synthetic routes for target molecules remains challenging. Chemical graph theory, a branch of theoretical chemistry, offers powerful tools for understanding ...read more
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