Results 1 to 10 of about 360 (144)
Synthesis and Fungicidal Activity of Novel 2,3-Disubstituted-1,3-benzoxazines [PDF]
Molecules, 2012 A series of new 2,3-disubstituted-3,4-dihydro-2<em>H</em>-1,3-benzoxazines were prepared in moderate to excellent yields by aza-acetalizations of aromatic aldehydes with 2-(<em>N</em>-substituted aminomethyl)phenols in the ...
Xiaoming Ou +6 more
doaj +5 more sources
Ring-Opening Polymerization of 1,3-Benzoxazines via Borane Catalyst [PDF]
Polymers, 2018 Tris(pentafluorophenyl)borane was used as Lewis acid catalyst to lower the ring opening polymerization temperature (ROP) of 1,3-benzoxazines. Dynamic scanning calorimeter studies revealed that on-set ROP temperatures were decreased as much as 98 °C for model benzoxazine compounds.
Yusuf Yagci +2 more
exaly +5 more sources
Direct Synthesis of Phosphonates and α-Amino-phosphonates from 1,3-Benzoxazines [PDF]
Molecules, 2019 A straightforward and novel method for transformation of readily available 1,3-benzoxazines to secondary phosphonates and α-aminophosphonates using boron trifluoride etherate as catalyst is developed.
Oscar Salgado-Escobar +3 more
doaj +2 more sources
Synthesis of a New Series of N,N’-Dimethyltetrahydrosalen (H2 [H2Me]salen) Ligands by the Reductive Ring-Opening of 3,3'-Ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazines) [PDF]
Molecules, 2010 A new series of N,N'-bis(2'-hydroxy-5'-substituted-benzyl)-N,N´-dimethylethane-1,2-diamines (N,N'-dimethyltetrahydrosalen) ligands were prepared in good yield by reduction of the respective 3,3'-ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazine ...
Augusto Rivera +4 more
doaj +2 more sources
Synthesis and Characterization of Bio-based Polybenzoxazine Hybrids From Vanillin, Thymol, and Carvacrol. [PDF]
Chem Asian JIn this study, we synthesized hybrid benzoxazines from the bio‐phenolic compounds—vanillin, thymol, and carvacrol— Jeffamine D‐230, and paraformaldehyde through a Mannich reaction. The thermal polymerizations of the hybrid benzoxazines were analyzed using differential scanning calorimetry (DSC).
Erdeger M, Gungor FS.
europepmc +2 more sources
3,4-Dihydro-2H-1,3-benzoxazines and their oxo-derivatives - Chemistry and bioactivities [PDF]
Journal of the Serbian Chemical Society, 2021 3,4-Dihydro-2H-1,3-benzoxazines derivatives are a significant class of heterocycles with particular awareness due to their remarkable biological activities in humans, plants and animals, and also their natural occurrence.
Sharaf El-Din Nabaweya Abd El-Salam
doaj +1 more source
Crystals, 2021 Dihydro-1,3,2H-benzoxazines (or benzoxazine monomers) are a class of compounds that have been widely utilized in many areas such as the production of the functional polymers and optoelectronic materials.
Worawat Wattanathana +6 more
doaj +1 more source
Applied Microbiology, 2023 Novel benzoxazines were synthesized by microwave irradiation and tested for their potential binding affinity towards receptors of advanced glycation end products (RAGE).
Hanumantharayappa Bharathkumar +4 more
doaj +1 more source
Molecules, 2021 A tailored series of coumarin-based ferrocenyl 1,3-oxazine hybrid compounds was synthesized and investigated for potential antiparasitic activity, drawing inspiration from the established biological efficacy of the constituent chemical motifs.
Mziyanda Mbaba +8 more
doaj +1 more source
Crystals, 2021 Dihydro-1,3,2H-benzoxazine dimer derivatives or dihydro-benzoxazine dimers are a class of compounds typically prepared by ring-opening reactions between dihydro-benzoxazines and phenols.
Natapol Suetrong +10 more
doaj +1 more source