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 +6 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 +6 more sources
Ring-Opening Polymerization of 1,3-Benzoxazines via Borane Catalyst. [PDF]
Polymers (Basel), 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 ...
Arslan M, Kiskan B, Yagci Y.
europepmc +5 more sources
Practical One-Pot Multistep Synthesis of 2H-1,3-Benzoxazines Using Copper, Hydrogen Peroxide and Triethylamine. [PDF]
European J Org Chem, 2021 In this article, we describe simple one-pot syntheses of 2H-1,3-benzoxazines from ketones utilizing an imino-pyridine directing group (R1R2-C=N-CH2-Pyr), which promotes a Cu-directed sp2 hydroxylation using H2O2 as oxidant and followed by an oxidative ...
Trammell R +6 more
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 +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
REARRANGEMENT OF SUBSTITUTED 1,3-BENZOXAZINES INTO XANTHENE-TYPE COMPOUNDS
Ukrainian Chemistry Journal, 2020 The rearrangement patterns of new 1,3-benzoxazines derivatives obtained by condensation of substituted salicylamides with cyclic ketones under the influence of Vilsmeier-Haack reagent has been studied.
O. Farat +3 more
semanticscholar +3 more sources
N-Activated 1,3-Benzoxazine Monomer as a Key Agent in Polybenzoxazine Synthesis. [PDF]
Macromolecules, 2020 A novel and successful application of ring-closing reactions of aminophenols has been proposed for the formation of a new type of 1,3-benzoxazine ionic derivatives. The optimization of the reaction and detailed computational studies have been reported for the estimation of heterocyclic ring stability and its further transformation, which is crucial in ...
Trybuła D +5 more
europepmc +4 more sources
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