Relevant bibliographies by topics / 4-benzoxazine

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  2. Dissertations / Theses
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Academic literature on the topic '4-benzoxazine'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "4-benzoxazine"

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Chozhan, C. Karikal, A. Chandramohan, and M. Alagar. "Development and characterization of 1,1-bis(3-methyl-4-hydroxyphenyl) cyclohexane-based benzoxazine and cyanate ester hybrid polymer matrices: Thermal and morphological properties." Polymers and Polymer Composites 27, no. 9 (2019): 609–18. http://dx.doi.org/10.1177/0967391119853747.

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1,1-Bis(3-methyl-4-hydroxyphenyl)cyclohexane-based benzoxazine monomer and 1,1-bis(3-methyl-4-cyanatophenyl)cyclohexane were blended together via in situ polymerization. The chemical blending of benzoxazines with cyanate ester was carried out thermally and the resulting product was analyzed by Fourier transform infrared spectra. The benzoxazine–cyanate ester hybrid polymer matrices were investigated for their thermal and morphological properties. The glass transition temperature, curing behavior, thermal stability, char yield, and flame resistance of the hybrid polymer matrices were studied by
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Farat, Oleg, Svetlana Varenichenko, Ekaterina Zaliznaya, and Victor Markov. "REARRANGEMENT OF SUBSTITUTED 1,3-BENZOXAZINES INTO XANTHENE-TYPE COMPOUNDS." Ukrainian Chemistry Journal 86, no. 2 (2020): 111–22. http://dx.doi.org/10.33609/0041-6045.86.2.2020.111-122.

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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. The influence of angel strain in a 4-membered spirocycle prevents the rearrangement of spiro [1,3-benzoxazine-2,1'-cyclobutan]-4(3H)-one under the action of a formylating agent. 1,3-Benzoxazines derivatives with ring sizes from 5- to 8-membered under the action of a formylating agent have formed formylxanthene derivative. Their formation reaction rate depends on the presence of electronegativity
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Petrakova, Viktoria V., Vyacheslav V. Kireev, Denis V. Onuchin, et al. "Benzoxazine Monomers and Polymers Based on 3,3′-Dichloro-4,4′-Diaminodiphenylmethane: Synthesis and Characterization." Polymers 13, no. 9 (2021): 1421. http://dx.doi.org/10.3390/polym13091421.

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To reveal the effect of chlorine substituents in the ring of aromatic amine on the synthesis process of benzoxazine monomer and on its polymerization ability, as well as to develop a fire-resistant material, a previously unreported benzoxazine monomer based on 3,3′-dichloro-4,4′-diaminodiphenylmethane was obtained in toluene and mixture toluene/isopropanol. The resulting benzoxazine monomers were thermally cured for 2 h at 180 °C, 4 h at 200 °C, 2 h at 220 °C. A comparison between the rheological, thermal and fire-resistant properties of the benzoxazines based on 3,3′-dichloro-4,4′-diaminodiph
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Suetrong, Natapol, Kantapat Chansaenpak, Sarawoot Impeng, et al. "Influences of Chemical Functionalities on Crystal Structures and Electrochemical Properties of Dihydro-benzoxazine Dimer Derivatives." Crystals 11, no. 8 (2021): 979. http://dx.doi.org/10.3390/cryst11080979.

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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. Dihydro-benzoxazine dimers act as chelating agents for several transition and rare-earth cations. To better understand the chelating properties, it is necessary to examine their structural features and electrochemical characteristics thoroughly. However, the electrochemical properties of dihydro-benzoxazine dimers have not been tremendously examined. Herein, eight derivatives of dihydro-benzoxazine dimers poss
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Rivera, Augusto, Jicli José' Rojas, Jaime Ríos-Motta, and Michael Bolte. "Crystal structure of 1,2-bis(6-bromo-3,4-dihydro-2H-benz[e][1,3]oxazin-3-yl)ethane: a bromine-containing bis-benzoxazine." Acta Crystallographica Section E Crystallographic Communications 72, no. 11 (2016): 1645–47. http://dx.doi.org/10.1107/s2056989016016509.

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The title benzoxazine molecule, C18H18Br2N2O2, was prepared by a Mannich-type reaction of 4-bromophenol with ethane-1,2-diamine and formaldehyde. The title compound crystallizes in the monoclinic space groupC2/cwith a centre of inversion located at the mid-point of the C—C bond of the central CH2CH2spacer. The oxazinic ring adopts a half-chair conformation. The structure is compared to those of other functionalized benzoxazines synthesized in our laboratory. In the crystal, weak C—H...Br and C—H...O hydrogen bonds stack the molecules along theb-axis direction.
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Kliegel, Wolfgang, Jörg Metge, Steven J. Rettig, and James Trotter. "Aromatic aldonitrones of 2-(hydroxyamino)benzyl alcohol and their cyclic isomers. Crystal and molecular structures of a 1-hydroxy-1,2-dihydro-4H-3,1-benzoxazine, a boron chelate, and its parent nitrone ligand." Canadian Journal of Chemistry 76, no. 4 (1998): 389–99. http://dx.doi.org/10.1139/v98-023.

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The synthesis of a series of C-aryl-N-[2-(hydroxymethyl)phenyl]nitrones, 5 (that can also exist under certain conditions as isomeric 1-hydroxy-2-aryl-1,2-dihydro-4H-3,1-benzoxazines, 8), via 2-(hydroxyamino)benzyl alcohol, 4, and their subsequent reactions with oxybis(diphenylborane), (Ph2B)2O, leading to the 5-(arylmethylene)-7,7-diphenyl-6,8-dioxa- 5-azonia-7-borata-5H-6,7,8,9-tetrahydrobenzocyclo- heptenes 6 are described. Crystals of 1-hydroxy-2- (4-methoxyphenyl)- 1,2-dihydro-4H-3,1-benzoxazine, 8b, are monoclinic, a = 9.379(2), b = 10.699(2), c = 12.9392(7) Å, β = 99.916(2)°, Z = 4 (two
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Lin, Ching Hsuan, Yu-Chun Chou, Meng Wei Wang, and Ru Jong Jeng. "A study on the co-reaction of benzoxazine and triazine through a triazine-containing benzoxazine." RSC Advances 6, no. 21 (2016): 17539–45. http://dx.doi.org/10.1039/c5ra23760b.

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To study the co-reaction of benzoxazine and triazine, a triazine-containing benzoxazine (P-tta) was prepared through nucleophilic substitution of 4-(2H-benzo[e][1,3]oxazin-3(4H)-yl)phenol (P-ap) with 2,4,6-trichloro-1,3,5-triazine.
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Patel, J. A., B. D. Mistry, and K. R. Desai. "Synthesis and Antimicrobial Activity of Newer Quinazolinones." E-Journal of Chemistry 3, no. 2 (2006): 97–102. http://dx.doi.org/10.1155/2006/586512.

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2–alkyl–6–bromo–3,1–benzoxazine–4–one (2) is synthesized by treatingp–Bromoanthranilic acid and Acetylechoride or Benzoylchloride. Reaction of 2–alkyl–6–bromo–3,1–benzoxazine–4–one (2). with hydrazinehydrate furnish the corresponding 3–Amino–2–methyl–6–bromoquinazoline–4(3H)–one (3) which on reaction with benzaldehyde affordN,N– arylidene derivative (4). Reaction of 4 with various diazonium salts yields 6–bromo–2–alkyl/aryl–3{[phenyl(phenyldiazenyl)methylene]amino}quinazolin–4(3H)–one .
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Kovalevsky, A. Yu, I. I. Ponomarev, and M. A. Baranova. "2-[2-(5-Nitro-2-thienyl)ethenyl]-4H-3,1-benzoxazine-4-one, 2-[2-(4-nitrophenyl)ethenyl]-4H-3,1-benzoxazine-4-one and 6,7-dimethoxy-2-[2-(4-nitrophenyl)ethenyl]-4H-3,1-benzoxazine-4-one." Acta Crystallographica Section C Crystal Structure Communications 56, no. 9 (2000): e408-e409. http://dx.doi.org/10.1107/s010827010001057x.

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Takeichi, Tsutomu, Soulideth Thongpradith, Shoko Hirai, Tomomi Takiguchi, and Takehiro Kawauchi. "Syntheses of novel benzoxazines having vinyl groups and thermal properties of the thermosets." High Performance Polymers 24, no. 8 (2012): 765–74. http://dx.doi.org/10.1177/0954008312451479.

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Novel benzoxazines having vinyl groups were synthesized from phenol or bisphenol A, 3- or 4-vinylaniline and paraformaldehyde. The chemical structures of the monomers were confirmed by Fourier transform infrared and 1H-NMR analyses. The polymerization behavior of the monomers was monitored by differential scanning calorimetry. Exothermic peak of the monomers appeared in the range of 219–252 °C, due to the chain polymerization of the vinyl group and the ring-opening polymerization of benzoxazine occurring at the same temperature range. The thermal cure of the monomers afforded polybenzoxazines
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Dissertations / Theses on the topic "4-benzoxazine"

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Pham, Hong-Ngoc. "Synthesis of enantiopure 3,4-dihydro-2H-1,4-benzoxazine analogues for potential biological applications." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0186.

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Ce travail décrit la synthèse et l'analyse conformationnelle de pseudodipeptides et pseudotripeptides à base d’un motif 1,4-benzoxazinique énantiopur. Les énantiomères du 2,3-dibromopropionate d'éthyle et du 3,4-dihydro-2H-1,4-benzoxazine-2-carboxylate d'éthyle sont obtenus par deux stratégies (i) synthèse énantiosélective et (ii) énantioséparation des racemiques par HPLC préparative à l’échelle du multigramme. En raison de processus de racémisation au cours des synthèses énantiosélectives, l'énantioséparation des racemiques par HPLC préparative est realisée avec succès pour accéder aux différ
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Mousset, Deborah. "Synthèse de l'analogue benzoxazinique de l'ellipticine.Synthèse et réactivité de bis-vinylphosphates dérivés d'imides." Phd thesis, Université d'Orléans, 2005. http://tel.archives-ouvertes.fr/tel-00168376.

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L'Ellipticine, alcaloïde représentatif des composés de type pyrido[4,3-b] carbazole, est un<br />puissant cytotoxique de part ses propriétés intercalantes mais également du fait de son<br />aptitude à inhiber l'activité de religation de l'ADN de la topoisomérase II. De nombreux<br />laboratoires se sont attachés à réaliser des synthèses efficaces de l'ellipticine mais également<br />de ses analogues structuraux.<br />Dans la première partie, en s'appuyant sur des travaux antérieurs du laboratoire, nous avons<br />développé une voie de synthèse d'un nouvel analogue benzoxazinique de l'Elliptici
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Colson, Eric. "Synthèse de dérivés de la 6-amino-2-phényl-4H-3,1-benzoxazine-4-one (N-substituée par divers α-aminoacides et dipeptides) : évaluation de leur pouvoir inhibiteur vis-à-vis de l'élastase leucocytaire humaine". Lyon 1, 1995. http://www.theses.fr/1995LYO10216.

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L'elastase leucocytaire humaine (hle) est une protease a serine, qui est impliquee dans de nombreuses infections ou pathologies comme l'emphyseme pulmonaire et l'arthrite rhumatoide resultant de l'hydrolyse de macromolecules de la matrice extra-cellulaire. Il a ete montre que des molecules de type 4h-3,1-benzoxazine-4-one sont capables de former une acyl-enzyme avec la serine du site actif de proteases de ce meme type et de les inhiber. Dans le but d'augmenter le pouvoir inhibiteur de tels composes, nous avons envisage de fixer differents acides amines ou dipeptides sur le groupement amine de
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Meyer, Martine. "Étude photophysique et photochimique de colorants styréniques en relation avec leur efficacité laser." Paris 11, 1989. http://www.theses.fr/1989PA112050.

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Ce mémoire présente l'étude des propriétés photophysiques et photochimiques de deux colorants styréniques : le 4-dicyanométhylène-2méthyl-6-p-dimétyl-amino-styryl-4H-pyrane (DCM) et la 7-diméthylamino-3-(-p-formyl-styryl)-1,4-benzoxazine-2-one (DFSBO). Ces deux composés possèdent des groupements donneur et accepteur d'électron qui confèrent à leur états excités fluorescents un fort caractère de transfert de charge. On a caractérisé les déplacements bathochromes des maxima de leurs spectres d'absorption et de fluorescence dans les solvants polaires ainsi que leurs déplacements de Stokes importa
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Schmid, Roman. "Synthese, lokalanästhetische Wirkung und Konformationsanalyse einiger 2-substituierter 3,1-Benzoxazin-4-one und Chinazolin-4-one als Beitrag zur Frage der pharmakologisch aktiven Konformation /." [S.l.] : [s.n.], 1986. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8106.

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Perry, Philip J. "Synthesis and biological evaluation of novel cytotoxic heterocylic compounds : furo[2,3-b]naphthoquinones and 2-aryl-4H-3,1-benzoxazin-4-ones." Thesis, De Montfort University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391202.

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Hlimi, Fouzia. "Cycloaddition de diarylnitrilimines sur des dérivés de la benzodioxine 1,4 et de la benzoxazine-1,4 : regiochimie de la réaction sur un alcene portant un groupe donneur et un groupe accepteur sur la même extrêmité." Besançon, 1987. http://www.theses.fr/1987BESA2018.

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La cycloaddition dipolaire 1,3 des diarylnitrilimines sur le benzodioxinne-1,4 carboxylate-2 d'ethyle conduit a des cycloadduits qui apres ouverture donnent des derives de l'aryloxy-4 diphenyl-1,3 pyrazole qui ne sont pas accessibles par une methode classique de synthese de pyrazoles
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Chuang, Wei-Chung, and 莊維仲. "Lewis acid-mediated rearrangement of 4-imino-4H-3,1-benzoxazins : total synthesis of pyrazino[2,1-b]quinazoline-3,6-diones on solid support." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/04011786751263321864.

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碩士<br>國立中正大學<br>化學所<br>96<br>Abstract Alkaloid pyrazino[2,1-b]quinazoline-3,6-diones contain structural motifs of quinazolinone and diketopiperazine-like skeletons. Some of which were found to have bioactivities. The last two steps in the organic synthesis of alkaloid pyrazino[2,1-b]quinazoline-3,6-diones involve the synthesis of peptides, which then undergo a cyclization-upon-deprotection reaction to form the final product. To perform peptide synthesis and cyclization-upon-deprotection, our and other laboratories have traditionally used liquid phase peptide synthesis and a combination of tr
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Books on the topic "4-benzoxazine"

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Perry, Philip J. Synthesis and biological evaluation of novel cytotoxic heterocyclic compounds: Furo (2,3-b) naphthoquinones and 2-aryl-4H-3,1-benzoxazin-4-ones. De Montfort University, 1996.

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Book chapters on the topic "4-benzoxazine"

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Pettus, T. R. R., and C. Selenski. "4-1,2-Benzoxazine Precursors (Thermal Extrusion)." In Quinones and Heteroatom Analogues. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-028-00808.

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Gorodisher, Ilya, Robert J. DeVoe, and Robert J. Webb. "Catalytic Opening of Lateral Benzoxazine Rings by Thiols." In Handbook of Benzoxazine Resins. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-53790-4.00056-4.

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Gu, Yi, and Qi-Chao Ran. "Polybenzoxazine/Fiber Composites." In Handbook of Benzoxazine Resins. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-53790-4.00073-4.

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"TGA Thermograms." In Handbook of Benzoxazine Resins. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-53790-4.00087-4.

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Zhang, K., P. Froimowicz, and H. Ishida. "Development of New Generation Benzoxazine Thermosets Based on Smart Ortho-Benzoxazine Chemistry." In Advanced and Emerging Polybenzoxazine Science and Technology. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-804170-3.00004-4.

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Allen, D. J., and H. Ishida. "Thermosets: Phenolics, Novolacs, and Benzoxazine." In Encyclopedia of Materials: Science and Technology. Elsevier, 2001. http://dx.doi.org/10.1016/b0-08-043152-6/01662-4.

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Curtis, A. D. M. "From 4-1,3-Oxazin-4-ones and 4-1,3-Benzoxazin-4-ones." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-00893.

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Liu, W., T. Feng, and J. Wang. "Fluorene-Based High Molecular Weight Benzoxazine Blends." In Advanced and Emerging Polybenzoxazine Science and Technology. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-804170-3.00021-4.

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von Angerer, S. "Reaction of 4-1,3-Benzoxazin-4-ones with Amidine Derivatives." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00811.

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"3.4. l,4-(Benz)Oxazines: 3.4.2. 1,4-Benzoxazines." In Hetarenes IV, edited by Ernst Schaumann. Georg Thieme Verlag, 1997. http://dx.doi.org/10.1055/b-0035-118057.

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