Developing Further Versatility in Benzoxazine Synthesis via Hydrolytic Ring-Opening.
2-substituted 1,3-benzoxazine
HCl hydrolysis
ring opening
Journal
Polymers
ISSN: 2073-4360
Titre abrégé: Polymers (Basel)
Pays: Switzerland
ID NLM: 101545357
Informations de publication
Date de publication:
20 Mar 2020
20 Mar 2020
Historique:
received:
23
01
2020
revised:
07
03
2020
accepted:
10
03
2020
entrez:
5
4
2020
pubmed:
5
4
2020
medline:
5
4
2020
Statut:
epublish
Résumé
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 (
Identifiants
pubmed: 32245037
pii: polym12030694
doi: 10.3390/polym12030694
pmc: PMC7182906
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : China Scholarship Council
ID : 201806240053
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