Relevant bibliographies by topics / Intramolecular hydrogen transfer

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Intramolecular hydrogen transfer'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Intramolecular hydrogen transfer"

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Wu, Chia-Hua, Lucas José Karas, Henrik Ottosson, and Judy I.-Chia Wu. "Excited-state proton transfer relieves antiaromaticity in molecules." Proceedings of the National Academy of Sciences 116, no. 41 (2019): 20303–8. http://dx.doi.org/10.1073/pnas.1908516116.

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Baird’s rule explains why and when excited-state proton transfer (ESPT) reactions happen in organic compounds. Bifunctional compounds that are [4n + 2] π-aromatic in the ground state, become [4n + 2] π-antiaromatic in the first 1ππ* states, and proton transfer (either inter- or intramolecularly) helps relieve excited-state antiaromaticity. Computed nucleus-independent chemical shifts (NICS) for several ESPT examples (including excited-state intramolecular proton transfers (ESIPT), biprotonic transfers, dynamic catalyzed transfers, and proton relay transfers) document the important role of exci
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Wang, Se, Zhuang Wang, and Ce Hao. "Role of intramolecular hydrogen bonding in the excited-state intramolecular double proton transfer (ESIDPT) of calix[4]arene: A TDDFT study." Open Physics 14, no. 1 (2016): 602–9. http://dx.doi.org/10.1515/phys-2016-0067.

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AbstractThe time-dependent density functional theory (TDDFT) method was performed to investigate the excited-state intramolecular double proton transfer (ESIDPT) reaction of calix[4]arene (C4A) and the role of the intramolecular hydrogen bonds in the ESIDPT process. The geometries of C4A in the ground state and excited states (S1, S2 and T1) were optimized. Four intramolecular hydrogen bonds formed in the C4A are strengthened or weakened in the S2 and T1 states compared to those in the ground state. Interestingly, upon excitation to the S1 state of C4A, two protons H1 and H2 transfer along the
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Miesen, Franciscus W. A. M., Hans C. M. Baeten, Harm A. Langermans, Leo H. Koole, and Henk A. Claessens. "Novel, intramolecular hydrogen-transfer and cyclo-addition photochemistry of cyclic 1,3-dienes." Canadian Journal of Chemistry 69, no. 10 (1991): 1554–62. http://dx.doi.org/10.1139/v91-230.

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With use of one- and two-dimensional NMR spectroscopy and deuterium labelling, the photochemistry of 9-endo-hydroxy-9-exo-vinyl-bicyclo[4.2.1]nonadiene (1) and the 9-exo-(11-dimethylvinyl)- (2) and 9-exo-ethyl- (3) analogues has been studied. Irradiation of 1–3 gave novel 8-membered ring systems 4–6 by a light-induced rearrangement process, in which the hydroxyl proton is transferred on one side of the molecule toward one of the termini of the endocyclic diene. This rearrangement process thus involves a formal hydrogen transfer, during which either H+ or H• may be transferred to a reactive die
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Schaub, Thomas, Stefan Rüdenauer, and Martine Weis. "Intramolecular Hydrogen Transfer Reaction: Menthon from Isopulegol." Organic Letters 16, no. 10 (2014): 2575–77. http://dx.doi.org/10.1021/ol500811u.

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Harada, Takaaki, Stephen F. Lincoln, and Tak W. Kee. "Excited-state dynamics of the medicinal pigment curcumin in a hydrogel." Physical Chemistry Chemical Physics 18, no. 40 (2016): 28125–33. http://dx.doi.org/10.1039/c6cp05648b.

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Curcumin is a yellow polyphenol with multiple medicinal effects. We show that excited-state intramolecular hydrogen atom transfer and solvent reorganisation are major photophysical events for curcumin in the PAAC18 hydrogel.
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Nielsen, Michael L., Bogdan A. Budnik, Kim F. Haselmann, Jesper V. Olsen, and Roman A. Zubarev. "Intramolecular hydrogen atom transfer in hydrogen-deficient polypeptide radical cations." Chemical Physics Letters 330, no. 5-6 (2000): 558–62. http://dx.doi.org/10.1016/s0009-2614(00)01078-2.

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Herrmann, Hendrik, Elisabeth Kaifer, and Hans‐Jörg Himmel. "Hydrogen‐Atom Transfer (HAT) Initiated by Intramolecular Ligand–Metal Electron Transfer." Chemistry – A European Journal 23, no. 23 (2017): 5520–28. http://dx.doi.org/10.1002/chem.201605971.

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Takahashi, Hiroaki, Yoshiki Watanabe, Makoto Sakai, and Masanori Tachikawa. "Photoinduced Intramolecular Hydrogen Transfer Reaction of Ortho Nitrobenzyl Compounds." Laser Chemistry 19, no. 1-4 (1999): 357–62. http://dx.doi.org/10.1155/1999/29456.

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Time-resolved resonance Raman and absorption spectra have revealed that the photoinduced intramolecular hydrogen transfer reaction of ortho nitrobenzyl compounds is initiated by the abstraction of methylene hydrogen by the ortho nitro group to generate the ortho aci-nitro acid isomer. In polar solvents the ortho aci-nitro acid is dissociated into the aci-nitro anion and a proton, and the proton is captured by other hydrogen accepting sites, such as 2-pyridyl, 4-pyridyl and 4-nitro groups to generate the ortho N—H quinoid, para N—H quinoid and para aci-nitro acid isomers, respectively. For 2-ni
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Spiegel, Maciej, Tadeusz Andruniów, and Zbigniew Sroka. "Flavones’ and Flavonols’ Antiradical Structure–Activity Relationship—A Quantum Chemical Study." Antioxidants 9, no. 6 (2020): 461. http://dx.doi.org/10.3390/antiox9060461.

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Flavonoids are known for their antiradical capacity, and this ability is strongly structure-dependent. In this research, the activity of flavones and flavonols in a water solvent was studied with the density functional theory methods. These included examination of flavonoids’ molecular and radical structures with natural bonding orbitals analysis, spin density analysis and frontier molecular orbitals theory. Calculations of determinants were performed: specific, for the three possible mechanisms of action—hydrogen atom transfer (HAT), electron transfer–proton transfer (ETPT) and sequential pro
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Förster, Christoph, Philipp Veit, Vadim Ksenofontov, and Katja Heinze. "Diferrocenyl tosyl hydrazone with an ultrastrong NH⋯Fe hydrogen bond as double click switch." Chemical Communications 51, no. 8 (2015): 1514–16. http://dx.doi.org/10.1039/c4cc08868a.

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The intramolecular NH⋯Fe hydrogen bond in diferrocenyl hydrazone 2 raises the barrier for intramolecular electron transfer in its mixed-valent cation 2+ and is only disrupted by double oxidation to 22+.
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Dissertations / Theses on the topic "Intramolecular hydrogen transfer"

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Pereira, Robson Valentim. "\"Transferência de carga e ligação de hidrogênio intramolecular em derivados de 9-aminoacridina\"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-18042007-172426/.

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Neste trabalho, o corante 9-aminoacridina foi derivatizado com compostos vinílicos que possuem grupos retiradores de elétrons. A incorporação destes leva à mudanças nas propriedades fotofísicas dos derivados, tais como deslocamentos para regiões de menor energia nos espectros de absorção e emissão, sugerindo a presença de transferência de carga intramolecular (ICT). Os estudos de fluorescência resolvida no tempo confirmam este processo para os derivados. Este estado ICT possui um tempo formação na faixa de 150 – 300 ps e um tempo de vida entre 1 – 3 ns, que depende do solvente. Os derivados qu
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Chen, Weihua. "Chemical Sensors Based on Fluorescence Turn-On Mechanism by Using Excited State Intramolecular Proton Transfer." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1334772708.

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Leyva, Novoa Veronica [Verfasser], Leticia [Akademischer Betreuer] Gonzalez, and Benjamin [Akademischer Betreuer] Dietzek. "The excited state intramolecular hydrogen transfer mechanism of ortho-Nitrobenzaldehyde : a quantum chemical and molecular dynamics study / Veronica Leyva Novoa. Gutachter: Leticia Gonzalez ; Benjamin Dietzek." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2012. http://d-nb.info/1019970030/34.

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Parada, Giovanny A. "Synthesis of Biomimetic Systems for Proton and Electron Transfer Reactions in the Ground and Excited State." Doctoral thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-251471.

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A detailed understanding of natural photosynthesis provides inspiration for the development of sustainable and renewable energy sources, i.e. a technology that is capable of converting solar energy directly into chemical fuels. This concept is called artificial photosynthesis. The work described in this thesis contains contributions to the development of artificial photosynthesis in two separate areas. The first one relates to light harvesting with a focus on the question of how electronic properties of photosensitizers can be tuned to allow for efficient photo-induced electron transfer proces
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Rouquet, Guy. "Nouvelles méthodes de génération de radicaux silylés : application à des processus radicalaires sans étain." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14180/document.

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Deux nouveaux concepts, visant à reproduire la chimie radicalaire des diétains à l’aide de radicaux centrés sur le silicium, sont présentés à travers ce manuscrit. Le premier concept introduit les “silaboranes”, des molécules constituées d’un motif de type silane et d’un atome de bore. Ceux-ci ont pour la première fois été exploités comme générateurs de radicaux triméthylsilyle via l’utilisation de la réaction de SHi sur le silicium (Substitution Homolytique Intramoléculaire) à partir de disilanes. Des études cinétiques et de modélisation moléculaires de la réaction de SHi ont, entre autres, p
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Attouche, Angie. "Développement de nouvelles réactions radicalaires sans étain en glycochimie : élaboration de spirocétals et débenzylations régiosélectives." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00923135.

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Ces travaux de thèse ont consisté à développer de nouvelles réactions radicalaires dans le domaine de la glycochimie. Deux cascades radicalaires, n'utilisant aucun dérivé stannylé et impliquant un transfert d'hydrogène intramoléculaire, ont été étudiées. La première permet de synthétiser des motifs spirocétaliques [6.5] nonanomériques et la deuxième consiste à débenzyler régiosélectivement un éther de benzyle par proximité. Les spirocétals [6.5] nonanomériques sont des motifs présents dans de nombreuses structures de produits naturels. Pour obtenir ce squelette, dont la synthèse est généraleme
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HUANG, SHI-TING, and 黃士庭. "Synthesis, Identification and Application of Hydrogen Sulfide Sensing Probes Based on Intramolecular Proton Transfer Mechanism." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/yw8pfd.

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Hsu, Yen-Hao, and 許晏豪. "Synthesis of Excited-State Intramolecular Proton Transfer Compounds via Seven-Membered-Ring Hydrogen Bonding System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/60102131456263511518.

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碩士<br>國立臺灣大學<br>化學研究所<br>102<br>In part I, we successfully obtained the bifunctional ortho- green fluorescence protein (o-HBDI) derivative, o-PyMeGFP, synthesized by Knoevenagel type reaction. Due to unstable conformation of o-MePyGFP; However, we successfully synthesized o-PyPhGFP via molecular adjustment. o-PyPhGFP underwent excited-state intramolecular proton transfer process via seven-membered-ring hydrogen-bonding system and its emssion at 607 nm. Also, ZnCl2 was reacted with o-PyPhGFP to form a complex, which destructed intramolecular H-bond and obtained blue emission. In part II, accord
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Chen, Kew-Yu, and 陳奎佑. "Ortho-Hydroxy Analogues of Green Fluorescence Protein Chromophore:Excited-State Intramolecular Proton Transfer via a Seven-Membered-Ring Hydrogen-Bonding System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/96254149572022465823.

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博士<br>國立臺灣大學<br>化學研究所<br>96<br>A structural isomer of the core chromophore (p-HBDI) in green fluorescence protein, o-HBDI, is synthesized. o-HBDI possesses a seven-membered ring hydrogen bond, from which the excited-state intramolecular proton transfer takes place, resulting in a remarkable tautomer emission of ~ 605 nm..
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Hsu, Cheng-Chih. "(1) High-Efficiency, Osmium(II)-Based Phosphorescent Materials: The Distinctive Photoluminescent Properties of Two Isomeric OsII Complexes Containing 2-pyridyl pyrazole Family Ligands (2)Ortho Green Fluorescence Protein Synthetic Chromophore; Excited-State Intramolecular Proton Transfer via a Seven-Membered-Ring Hydrogen-Bonding System." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0307200717191300.

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Book chapters on the topic "Intramolecular hydrogen transfer"

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Krishnamoorthy, Govindarajan. "Hydrogen-Bonding Effects on Intramolecular Charge Transfer." In Hydrogen Bonding and Transfer in the Excited State. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669143.ch14.

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Pang, Yi, and Weihua Chen. "Excited-State Intramolecular Proton Transfer in 2-(2′-Hydroxyphenyl)benzoxazole Derivatives." In Hydrogen Bonding and Transfer in the Excited State. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669143.ch32.

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Nardo, Luca, Alessandra Andreoni, and Hanne Hjorth Tønnesen. "Intramolecular H-Bond Formation Mediated De-Excitation of Curcuminoids: A Time-Resolved Fluorescence Study." In Hydrogen Bonding and Transfer in the Excited State. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669143.ch17.

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Bartocci, Giampiero, Ugo Mazzucato, and Anna Spalletti. "Effect of Intramolecular H-Bond-Type Interactions on the Photochemistry of Aza-Stilbene-Like Molecules." In Hydrogen Bonding and Transfer in the Excited State. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669143.ch10.

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Prasad De, Sankar, and Ajay Misra. "Excited-State Intramolecular Proton Transfer Processes on Some Isomeric Naphthalene Derivatives: A Density Functional Theory Based Computational Study." In Hydrogen Bonding and Transfer in the Excited State. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470669143.ch26.

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Gehlen, Marcelo H., Emanuelle R. Simas, Robson V. Pereira, and Carolina A. Sabatini. "Modulation of Dye Fluorescence by Photoinduced Intramolecular Charge Transfer with Resonance-Assisted Hydrogen Bond." In Reviews in Fluorescence 2010. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9828-6_6.

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Kataoka, Kayoko, Takuya Kobayashi, and Tatsuo Arai. "Photochromism of Organic Compounds Undergoing Isomerization Around the C═C Double Bond and/or Intramolecular Hydrogen Atom Transfer: Small and Large Structural Change." In New Frontiers in Photochromism. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54291-9_13.

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Treacy, S., X. Zhang, and T. Rovis. "1.13 Intramolecular Hydrogen-Atom Transfer." In Free Radicals: Fundamentals and Applications in Organic Synthesis 1. Georg Thieme Verlag KG, 2021. http://dx.doi.org/10.1055/sos-sd-234-00299.

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AbstractRecent advances in intramolecular hydrogen-atom transfer (HAT) have demonstrated significant utility in C—H functionalization through highly reactive open-shell intermediates. The intramolecular transposition of radical reactivity from select functional groups to generate more stable carbon-centered radicals often proceeds with high regioselectivity, providing novel bond disconnections at otherwise inert and largely indistinguishable positions. This chapter explores the functional groups capable of intramolecular HAT to generate remote radicals and the transformations currently available to the synthetic chemist.
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Chen, Kepeng, and Jianzhang Zhao. "Intramolecular and Intra-assembly Triplet Energy Transfer." In Hydrogen-Bonding Research in Photochemistry, Photobiology, and Optoelectronic Materials. WORLD SCIENTIFIC (EUROPE), 2019. http://dx.doi.org/10.1142/9781786346087_0002.

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Shi, Ying, and Hang Yin. "Probing Dynamics of Nonfluorescent Excited-State Intramolecular Proton Transfer." In Hydrogen-Bonding Research in Photochemistry, Photobiology, and Optoelectronic Materials. WORLD SCIENTIFIC (EUROPE), 2019. http://dx.doi.org/10.1142/9781786346087_0005.

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Conference papers on the topic "Intramolecular hydrogen transfer"

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Elsaesser, Thomas. "Femtosecond intramolecular proton transfer in hydrogen bonded systems." In Ultrafast reaction dynamics and solvent effects. AIP, 1994. http://dx.doi.org/10.1063/1.45384.

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