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Relevant bibliographies by topics / Nitrobenzylic derivatives

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Journal articles

Academic literature on the topic 'Nitrobenzylic derivatives'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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Journal articles on the topic "Nitrobenzylic derivatives"

1

Šolomek, Tomáš, Sébastien Mercier, Thomas Bally, and Christian G. Bochet. "Photolysis of ortho-nitrobenzylic derivatives: the importance of the leaving group." Photochemical & Photobiological Sciences 11, no. 3 (2012): 548. http://dx.doi.org/10.1039/c1pp05308f.

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2

Becker, R., W. Hoffmann, A. Knorr, W. Walther, and A. Lehmann. "Determination of zinc O,O?-dialkyl dithiophosphate lubricant additives via the corresponding methyl and p-nitrobenzylic ester derivatives using GC-MS, GC-NPD and HPLC-MS." Fresenius' Journal of Analytical Chemistry 357, no. 6 (1997): 688–94. http://dx.doi.org/10.1007/s002160050235.

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3

Liang, Dinghua, Xing Wu, Brian B. Hasinoff, David E. Herbert, and Geoffrey K. Tranmer. "Evaluation of Nitrobenzyl Derivatives of Camptothecin as Anti-Cancer Agents and Potential Hypoxia Targeting Prodrugs." Molecules 23, no. 8 (2018): 2041. http://dx.doi.org/10.3390/molecules23082041.

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As part of our initial efforts into developing a tumor-targeting therapy, C-10 substituted derivatives of a camptothecin analog (SN-38) have been synthesized (2-, 3- and 4-nitrobenzyl) for use as potential hypoxia-activated prodrugs and evaluated for their cytotoxicity, topoisomerase I inhibition and electrochemical (reductive) properties. All three derivatives were found to possess reduced toxicity towards human leukemia K562 cells compared to SN-38, validating a condition for prodrug action. Using an MTS assay, IC50’s were found to be 3.0, 25.9, 12.2 and 58.0 nM for SN-38, 2-nitro-, 3-nitro-

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4

Wan, Peter, S. Muralidharan, Iain McAuley та Christopher A. Babbage. "Photooxygenation of nitrobenzyl derivatives. Mechanisms of photogeneration and hydrolysis of α-hydroperoxy nitrobenzyl ethers". Canadian Journal of Chemistry 65, № 8 (1987): 1775–83. http://dx.doi.org/10.1139/v87-299.

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The photooxygenation of nitrobenzyl derivatives 1–10 has been studied in aqueous solution as a function of pH. For m-nitrobenzyl ethers 2–4 and 9, stable α-hydroperoxy ethers (11–13) are the primary photochemical products. Acid hydrolysis of 11–13 gives m-nitrobenzaldehyde and hydrogen peroxide. Quantum yields for photooxygenation are reported for a number of derivatives as a function of pH. Acid and base catalyses of photooxygenation are observed for several compounds. A mechanism involving photogenerated nitrobenzyl carbanion intermediates is proposed.

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5

Yan, Tay Karh, Asnuzilawati Asari, Siti Aishah Salleh, and Wahizatul Afzan Azmi. "Eugenol and Thymol Derivatives as Antifeedant Agents against Red Palm Weevil, Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) Larvae." Insects 12, no. 6 (2021): 551. http://dx.doi.org/10.3390/insects12060551.

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Coconut palms in Malaysia are infested by a destructive invasive pest, RPW since 2007, and the pest’s population is difficult to control. At present, RPW control management mainly relies on the use of monocrotophos, which is administered by the trunk injection method. However, this pesticide can negatively impact human health and the ecosystem. Plant EO that can be used as a bio-pesticide is highly recommended as an alternative to monocrotophos because of its target-specific and eco-friendly properties. The antifeedant activity of eight eugenol and thymol derivatives from clove and thyme EOs w

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6

Wan, Peter, and S. Muralidharan. "Photochemical retro-aldol type reactions of nitrobenzyl derivatives. Mechanistic variations in the elimination of nitrobenzyl carbanions from nitrobenzyl derivatives on photolysis." Canadian Journal of Chemistry 64, no. 9 (1986): 1949–51. http://dx.doi.org/10.1139/v86-321.

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The photochemical retro-aldol type reactions of several nitrobenzyl derivatives are reported. The reactions are observed only in aqueous solution with quantum efficiencies being pH dependent for several derivatives, consistent with the existence of several mechanistic pathways for reaction. The primary photochemical event is believed to involve the generation of a nitrobenzyl carbanion, which acts as a photolabile leaving group in these reactions, and the generation of an oxocarbocation (or oxocarbocation-derived) fragment.

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7

Morrison, James, Peter Wan, John ET Corrie та V. Ranjit Munasinghe. "Chemistry of photogenerated α-hydroxy-p-nitrobenzyl carbanions in aqueous solution: protonation vs. disproportionation". Canadian Journal of Chemistry 81, № 6 (2003): 586–97. http://dx.doi.org/10.1139/v03-045.

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The photochemistry of p-nitrobenzyl derivatives 610 has been studied in aqueous solution as a function of pH, using product analysis, UVvis spectrophotometry, and laser flash photolysis (LFP). The compounds were chosen with the aim of further exploring the propensity of these systems to give rise to α-hydroxy-p-nitrobenzyl carbanions on photolysis, and to study their mechanisms of subsequent reaction. α-Hydroxy-substituted carbanions are anions that cannot be readily formed using thermal routes but which are believed to have some interesting chemistry. Three methods were employed for photoge

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8

Prousek, Josef. "Preparation and alkylation reactions of 4-nitrobenzyl and 5-nitrofurfuryl sulfones." Collection of Czechoslovak Chemical Communications 53, no. 4 (1988): 851–56. http://dx.doi.org/10.1135/cccc19880851.

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Substitution reaction of 5-nitrofurfuryl bromide (I) with sodium thiophenoxide and 4-chlorothiophenoxide in dimethyl sulfoxide at 20 °C and oxidation with dimethyl sulfoxide in the reaction medium afforded 5-nitrofurfuryl phenyl sulfone (IVa) and 5-nitrofurfuryl 4-chlorophenyl sulfone (IVb), respectively. Similarly, 4-nitrobenzyl bromide reacted with sodium 4-chlorothiophenoxide to give 4-nitrobenzyl 4-chlorophenyl sulfone (VII) and with sodium phenylsulfinate to afford 4-nitrobenzyl phenyl sulfone (IX). The sulfide intermediates were not isolated. The sulfone IX was used as substrate in alkyl

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9

Xue, Yuan, Kai Ye, Xuebin Wang, et al. "Precise macroscopic supramolecular assembly of photopatterned hydrogels." Chemical Communications 57, no. 70 (2021): 8786–89. http://dx.doi.org/10.1039/d1cc03428f.

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Photoligation chemistry of o-nitrobenzyl derivatives is applied to photopattern amine-containing polyelectrolytes on the surface of hydrogels, so as to achieve precise macroscopic self-assembly by electrostatic interaction.

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10

Bujok, Robert, and Mieczysław Mąkosza. "Synthesis of Diarylacetylenes Bearing Electron-Withdrawing Groups via the Smiles Rearrangement." Synthesis 51, no. 16 (2019): 3109–16. http://dx.doi.org/10.1055/s-0037-1612423.

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Nitrobenzyl benzothiazol-2-yl sulfones and nitrobenzyl 1-phenyl-1H-tetrazol-5-yl sulfones react with chlorides of aromatic acids to form β-acyl derivatives. These products undergo the Smiles rearrangement resulting in the formation of the corresponding nitrophenyl arylacetylenes in 50–60% overall yields (approx. 75% per step). Sulfones bearing CF3 or CN groups instead of a NO2 substituent form mixtures of the acetylenes in moderate yields and benzyl aryl ketones in yields above 40%.

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