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Thematische Bibliographien / ALICYCLIC SYSTEMS

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Zeitschriftenartikel

Auswahl der wissenschaftlichen Literatur zum Thema „ALICYCLIC SYSTEMS“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "ALICYCLIC SYSTEMS"

1

EWING, D. F. "ChemInform Abstract: Large Alicyclic Ring Systems." ChemInform 26, no. 3 (2010): no. http://dx.doi.org/10.1002/chin.199503280.

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2

Zhubanov, B. A., V. D. Kravtsova, R. F. Mukhamedova, and K. Kh Bekmagambetova. "New polymer systems based on alicyclic polyimides." Russian Journal of Applied Chemistry 79, no. 11 (2006): 1869–74. http://dx.doi.org/10.1134/s1070427206110255.

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3

Kappe, Thomas, Barbara Schnell, Krassimira Georgieva, et al. "Sulfidation of Alicyclic and Heterocyclic 1,3-Dicarbonyl Systems." Phosphorus, Sulfur, and Silicon and the Related Elements 95, no. 1-4 (1994): 349–50. http://dx.doi.org/10.1080/10426509408034233.

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4

Oszczapowicz, Janusz, and Irena Oszczapowicz. "Substituent effects in13C NMR spectra. Part II-Alicyclic rigid systems." Journal of Physical Organic Chemistry 18, no. 8 (2005): 818–24. http://dx.doi.org/10.1002/poc.946.

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5

Mączka, Wanda Krystyna, and Agnieszka Mironowicz. "Biotransformation of Isoprenoids and Shikimic Acid Derivatives by a Vegetable Enzymatic System." Zeitschrift für Naturforschung C 59, no. 3-4 (2004): 201–4. http://dx.doi.org/10.1515/znc-2004-3-413.

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In biotransformations carried out under similar conditions enzymatic systems from carrot (Daucus carota L.), celeriac (Apium graveolens L. var. rapaceum) and horse-radish (Armoracia lapathifolia Gilib.) hydrolyzed the ester bonds of acetates of phenols or alicyclic alcohols. Nevertheless, methyl esters of aromatic acids did not undergo hydrolysis. Alcohols were oxidized to ketones in a reversible reaction.

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6

Werstiuk, Nick Henry, Gwen Irene Wade, and Peter John Joseph Martin. "Facile H–D exchange of the bridgehead methyls of bicyclo[2.2.2]octan-2,5-diones. Evidence for a carbon analogue of the acyloin rearrangement." Canadian Journal of Chemistry 63, no. 9 (1985): 2582–83. http://dx.doi.org/10.1139/v85-428.

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Hexamethyltwistyl-2,5-dione 4 has been synthesized and its H–D exchange studied in t-BuOK/t-BuOD at 125 °C. We find that the bridgehead methyl at C-3 undergoes exchange 7 × 105 times faster than the bridgehead methyl of bicyclo[2.2.1]heptan-2-one (fenchone). This result, along with a previous study, establishes the first examples of the carbon analogue of the acyloin rearrangement of alicyclic systems.

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7

Bishop, R., and GH Lee. "Detection of Non-Conjugative Interactions in Rigid Cyclic Molecules by Using Carbon-13 N.M.R. Shift Values." Australian Journal of Chemistry 40, no. 2 (1987): 249. http://dx.doi.org/10.1071/ch9870249.

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In previous work, interaction between formally unconjugated unsaturated groups was detected by comparing the 13C n.m.r. shift values of the sp2 atoms of difunctional compounds with those of the corresponding monofunctional compounds. This procedure has now been used to investigate possible interactive effects in a range of rigid alicyclic systems where steric and conformational factors cannot be involved, namely, the 2,6-disubstituted adamantane (6), 4,8-disubstituted 2-thiaadamantane (7), 2,6-disubstituted noradamantane (8), and 2,5-disubstituted norbornane (9) systems. In each case interacti

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8

Umerzakova, М. B., R. B. Sarieva, and V. D. Kravtsova. "MODIFIED WITH VARIOUS ADDITIVES ARYLALYCLIC COPOLYIMIDES AND COMPOSITE FILMS BASED ON THEIR BASIS." Chemical Journal of Kazakhstan 3 (September 30, 2021): 19–35. http://dx.doi.org/10.51580/2021-1/2710-1185.36.

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lopment of arylalicyclic copolyimides based on alicyclic dianhydride, aromatic dianhydrides of benzophenone- and diphenyloxidetetracarboxylic acids with 4,4'-diaminodiphenyl oxide at various ratios of alicyclic and aromatic dianhydrides, as well as various compositions based on these copolymers with low- or other high-molecular compounds that enhance the characteristics of the polymer matrix. Composite films were formed from solutions of the obtained polymer mixtures, and their properties were studied. It was noted that at optimal ratio of components, the films have improved thermal and streng

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9

Charton, Marvin. "The Nature and Transmission of Substituent Electrical Effects in Alicyclic Solvolysis." Collection of Czechoslovak Chemical Communications 64, no. 11 (1999): 1849–76. http://dx.doi.org/10.1135/cccc19991849.

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The correlation of rate constants taken from the literature for 2-exo- and 2-endo-norbornyl derivatives substituted in positions 1, 4, 5-exo, 6-exo, 6-endo, and 7-anti with the triparametric LDR equation and relationships derived from it has been carried out. A delocalized (resonance) electrical effect has been found in all but the 4-substituted derivatives. The resonance effect may be somewhat greater when the leaving group is exo than when it is endo. Steric effects occur in the 6-endo-substituted derivatives. The transition state resembles a classical carbocation rather than the nonclassica

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10

Mahesh, V. K., Mamta Maheswari, Rakesh Sharma, and Rashmi Sharma. "Analogs of cannabinoids: synthesis of some 7H-indolo-, 5H-imidazolo, 7H-benzimidazolo[1,2-c] [1,3]benzoxazines – novel ring systems." Canadian Journal of Chemistry 63, no. 3 (1985): 632–35. http://dx.doi.org/10.1139/v85-103.

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Tetrahydrocannabinol 1, the active constituent of CannabissativaLinn, is a well-known CNS-active compound and introduction of a nitrogen atom at the ring junction of the pyran and alicyclic ring is of considerable interest. This prompted the synthesis of 7H-indolo[1,2-c] [1,3]-, 5H-imidazolo[1,2-C] [1,3],- and 7H-benzimidazolo[1,2-c] [1,3]-benzoxazine, a novel heterocyclic system. 2-(2′-Hydroxyphenyl) indoles, 2-(2′-hydroxyphenyl) imidazoles, and 2-(2′-hydroxyphenyl) benzimidazoles are suitable intermediates for the preparation of this type of benzoxazines, as the second heterocycle (ring B) c

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