Producción CyT
Artículo
Autoría
Cui, Shaoying
;
Arza, Carlos R.
;
FROIMOWICZ, PABLO
;
Ishida, Hatsuo
Fecha
2020
Editorial y Lugar de Edición
MDPI - Multidisciplinary Digital Publishing Institute
Revista
Polymers,
vol. 12
(pp. 1-13)
- ISSN 2073-4360
MDPI - Multidisciplinary Digital Publishing Institute
MDPI - Multidisciplinary Digital Publishing Institute
ISSN
2073-4360
Resumen
Información suministrada por el agente en
SIGEVA
In this study, 2-(aminomethyl)phenol and its derivatives, the reactants for 2-substituted 1,3-benzoxazines, are synthesized by HCl hydrolysis from the typical benzoxazines. The phenol/ aniline-based mono-oxazine benzoxazine, PH-a, and the bisphenol A/aniline-based bis-oxazine benzoxazine, BA-a, are used as examples to demonstrate the feasibility of this new approach. Their chemical structures are characterized by nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) and Raman spec...
In this study, 2-(aminomethyl)phenol and its derivatives, the reactants for 2-substituted 1,3-benzoxazines, are synthesized by HCl hydrolysis from the typical benzoxazines. The phenol/ aniline-based mono-oxazine benzoxazine, PH-a, and the bisphenol A/aniline-based bis-oxazine benzoxazine, BA-a, are used as examples to demonstrate the feasibility of this new approach. Their chemical structures are characterized by nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) and Raman spectroscopies, and are further verified by elementary analysis. Their thermal properties are studied by differential scanning calorimetry (DSC). These two 2-(aminomethyl) phenolic derivatives are reacted with paraformaldehyde to close the oxazine rings. A benzoxazine with a phenyl substituent at the 2-position of the oxazine ring is obtained from the 2-(phenylamino)methyl)phenol (hPH-a) and benzaldehyde. All these results highlight the success of the HCl hydrolysis and the formation of stable intermediates, namely 2-(aminomethyl) phenolic derivatives, from readily available benzoxazine monomers. This further demonstrates the feasibility of using these intermediates as reactants for a novel benzoxazine synthesis.
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Palabras Clave
HCL HYDROLYSIS2-SUBSTITUTED 1,3-BENZOXAZINERING OPENING
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