... the structural and electronic characteristics of the resulting hetera-buckybowls. The design, synthesis, and derivatization of hetera-buckybowls open an avenue for obtaining fascinating organic ... In this review, we summarize the advances in hetera-buckybowl chemistry, particularly the synthetic strategies toward these ...
Tópico(s): Cyclopropane Reaction Mechanisms
2020 - Royal Society of Chemistry | Organic & Biomolecular Chemistry
Gary S. Smith, K. Darrell Berlin, Stan A. Zisman, Elizabeth M. Holt, Vicki A. Green, Dick Van der Helm,
... unusual multicyclic products from the condensation of 1-hetera-4-cyclohexanones in a Mannich reaction with benzylamine, ... to the expected ketones, namely 7-benzyl-3-hetera-7-azabicyclo[3.3.1]nonan-9-ones, ...
Tópico(s): Synthesis and Reactivity of Sulfur-Containing Compounds
1988 - Taylor & Francis | Phosphorous and Sulfur and the Related Elements
... buckybowls with the main group elements results in hetera-buckybowls, and accordingly has a large influence on ... properties. This account summarizes our research progress on hetera-buckybowl trichalcogenasumanenes (TCSs), including their synthesis, regioselective oxidations, ...
Tópico(s): Organic Electronics and Photovoltaics
2020 - Thieme Medical Publishers (Germany) | Synlett
Kazuhiko Sakamoto, Michinori Ōki,
Abstract Several hetera-p-carbophanes containing two amide groups in the ansa chain were synthesized by the highdilution method. Those which ...
Tópico(s): Molecular spectroscopy and chirality
1973 - Oxford University Press | Bulletin of the Chemical Society of Japan
Maksym Kovalenko, Dmytro V. Yarmoliuk, Dmytro Serhiichuk, Daria Chernenko, Vladyslav Smyrnov, Artur Breslavskyi, Oleksandr V. Hryshchuk, Ihor Kleban, Yuliya V. Rassukana, Andriy V. Tymtsunik, Andrey A. Tolmachev, Yuliya O. Kuchkovska, Oleksandr O. Grygorenko,
... was studied. Additionally, a series of diversely functionalized (hetera)cycloalkylidenemethyl and (hetera)cycloalkyl boronic acid‐derived building blocks was synthesized.
Tópico(s): Advanced Synthetic Organic Chemistry
2019 - Wiley | European Journal of Organic Chemistry
Illia O. Feskov, Anton V. Chernykh, Yuliya O. Kuchkovska, Constantin G. Daniliuc, Ivan S. Kondratov, Oleksandr O. Grygorenko,
Four 3-((hetera)cyclobutyl)azetidine-based isosteres of piperidine, piperazine, and morpholine were designed and synthesized on up to gram scale. ...
Tópico(s): Chemical Synthesis and Analysis
2018 - American Chemical Society | The Journal of Organic Chemistry
... heteraspiro[2.4]heptanes and terminating with α-hetera[5.6]dodecanes; the annular heteroatoms are N, ...
Tópico(s): Synthetic Organic Chemistry Methods
2015 - Thieme Medical Publishers (Germany) | Synthesis
Christoph Elschenbroich, Thomas Isenburg, Andreas Behrendt,
... between Chromium(I) and Molybdenum(III) in the Hetera[3]metallocyclophane {[(Me2P-.eta.6-C6H5)2Cr](Pri-. ...
Tópico(s): Magnetism in coordination complexes
1995 - American Chemical Society | Inorganic Chemistry
Christoph Elschenbroich, Heike Burdorf, Helmut Burdorf, Dagmar Mahrwald, Bernhard Metz,
Lithiation of bis(benzene)chromium and subsequent reaction with Ph 2 Se 2 or Se and CH 3 I, respectively, afforded the complexes (PhSe-η 6 -C 6 H 5 ) 2 Cr (6) and (MeSe-η 6 -C 6 H 5 ) 2 Cr (8), the latter being convertible into interannularly bridged (MeSe-η 6 -C 6 H 5 ) 2 Cr[M(CO) 4 ] (9-11, M = Cr, Mo, W). According to 1 H NMR spectroscopy, 9 undergoes both bridge inversion and reversal, the former displaying spectral coalescence at 283 K (ΔG c ≠ = 55.9 kJ mol -1 ) whereas the latter is still rapid at 200 K. Substitution ...
Tópico(s): Lanthanide and Transition Metal Complexes
1992 - De Gruyter | Zeitschrift für Naturforschung B
Christoph Elschenbroich, Jochen Sebbach, Bernhard Metz, Gottfried, Heikenfeld,
... 5 is exploited for the synthesis of the hetera-metallocyclophane [2,2,11,11-tetracarbony-1,1, ... Natur von 5 wird zunächst zur Bildung des Hetera-metallocyclophans [2,2,11,11-Tetracarbonyl-1,1, ...
Tópico(s): Synthetic Organic Chemistry Methods
1992 - Elsevier BV | Journal of Organometallic Chemistry
Satish V. Mulekar, K. Darrell Berlin,
... with oxygen-17 chemical shifts in substituted 1-hetera-4-cyclohexanonesSatish V. Mulekar and K. Darrell BerlinCite ...
Tópico(s): Asymmetric Synthesis and Catalysis
1989 - American Chemical Society | The Journal of Organic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT1-Hetera-4-cyclohexanone system. Proton and carbon-13 magnetic resonance, transannular effects, and conformational analysisJerry A. Hirsch and E. HavingaCite this: ...
Tópico(s): Chemical Reaction Mechanisms
1976 - American Chemical Society | The Journal of Organic Chemistry
... inapplicable. It can be combined as description of hetera-protophanes and hetera-phanes with the a-nomenclature of Stelzner (proposition ...
Tópico(s): Crystallography and molecular interactions
1972 - Elsevier BV | Tetrahedron
Lingxi Wu, Yecheng Li, Xinqiang Hua, Lei Ye, Chengshan Yuan, Zitong Liu, Hao‐Li Zhang, Xiangfeng Shao,
... rich in physical properties. Herein, two kinds of hetera-buckybowls, ethoxy-substituted trithiasumanene (3SEt) and triselenasumanene (3SeEt), ...
Tópico(s): Advanced Battery Materials and Technologies
2024 - Wiley | Angewandte Chemie International Edition
Jerry Hirsch, Kenneth Banasiak,
... for the carbons alpha and beta to the hetera group previously found for the analogous sulfur, oxygen ... chair conformations. For the carbons gamma to the hetera group, the plots suggest that there are transannular ... observed for the sulfide group. In these 1‐hetera‐4‐cyclohexanones, transannular interactions appear whenever a lone ...
Tópico(s): Synthesis and Reactivity of Sulfur-Containing Compounds
1983 - Wiley | Organic Magnetic Resonance
Oleksandr S. Liashuk, Ihor A. Ryzhov, Oleksandr V. Hryshchuk, Bohdan V. Vashchenko, Pavlo V. Melnychuk, Yulian M. Volovenko, Oleksandr O. Grygorenko,
... di-, and α,β,β-trialkyl-, β,β-(hetera)cycloalkylidene-, CO2 Et-, as well as most β-( ...
Tópico(s): Catalytic Cross-Coupling Reactions
2022 - Wiley | Chemistry - A European Journal
Ihor Kleban, Yevhen Krokhmaliuk, Sofiia Reut, Serhii Shuvakin, Vyacheslav Pendyukh, Oleksandr I. Khyzhan, Dmytro S. Yarmoliuk, Andriy V. Tymtsunik, Yuliya V. Rassukana, Oleksandr O. Grygorenko,
... other relying on regioselective hydroboration of the appropriate hetera‐substituted enynes. The second method appeared to be ...
Tópico(s): Organoboron and organosilicon chemistry
2020 - Wiley | European Journal of Organic Chemistry
Mary S. Collins, Matthew E. Carnes, Bryan P. Nell, Lev N. Zakharov, Darren W. Johnson,
... temperature to give a diversity of new thioether (hetera)cyclophanes in high yield. In addition to the ...
Tópico(s): DNA and Nucleic Acid Chemistry
2016 - Nature Portfolio | Nature Communications
... indicated by replacement prefixes. In general, the term 'hetera' denotes a nonspecified annulated heteroatom which may be ...
Tópico(s): Inorganic and Organometallic Chemistry
2014 - Thieme Medical Publishers (Germany) | Synthesis
Krisztina Kónya, Szabolcs Fekete, Anita Ábrahám, Tamás Patonay,
Tópico(s): Catalytic Alkyne Reactions
2012 - Springer Science+Business Media | Molecular Diversity
Marko Soltau, Maren Göwert, Paul Margaretha,
... undergo tandem cyclization to hitherto unknown tetracyclic (4-hetera)cyclopent[b,c]acenaphthylenes, the corresponding cyclopentenylnitrenes stemming ...
Tópico(s): Fluorine in Organic Chemistry
2005 - American Chemical Society | Organic Letters
Fredrik Hæffner, K. N. Houk, Suzanne M. Schulze, Jeehiun K. Lee,
... 2,3] sigmatropic Wittig rearrangements of deprotonated 4-hetera-1-pentenes and the anionic [3,3] sigmatropic ...
Tópico(s): Structural and Chemical Analysis of Organic and Inorganic Compounds
2003 - American Chemical Society | The Journal of Organic Chemistry
Günter Paulus Schiemenz, Christian Näther,
Abstract In a 4-isopropyl-1-oxa-3-oxonia-2-borata-naphthalene the isopropyl group exhibits the same conformational phenomena as the Me 2 N group in 8-dimethylamino-naphth-1-yl-silanes and related phosphorus compounds. Since the details can be fully rationalized on the basis of the steric situation and electronic factors are excluded, the common features cannot serve to infer dative interaction from nitrogen to silicon / phosphorus resulting in hypercoordination of the third period element atoms in ...
Tópico(s): Ferrocene Chemistry and Applications
2002 - De Gruyter | Zeitschrift für Naturforschung B
... spryi (Chapman, 1912), Sthenarocalymene kilmorensis (Gill, 1945; = Gravicalymene hetera Gill, 1945) and Trimerus harrisoni (McCoy, 1876). A ...
Tópico(s): Marine Biology and Ecology Research
2000 - Taylor & Francis | Alcheringa An Australasian Journal of Palaeontology
Mathias Habel, Christoph Niederalt, Stefan Grimme, Martin Nieger, Fritz Vögtle,
... 7 is one of the most strained anti-hetera[2.2]metacyclophanes known. This is also evident ...
Tópico(s): Chemical Reaction Mechanisms
1998 - Wiley | European Journal of Organic Chemistry
Venkataraman Gurumani, K. Pandiarajan, M. Swaminathan,
Abstract 1H NMR spectra have been recorded for cis- and trans-2,6-diphenyltetrahydrothiopyran-4-ones (1 and 5), cis- and trans-2,6-diphenyltetrahydropyran-4-ones (2 and 6), 3-methyl- and 3-ethyl-2,6-diphenyltetrahydropyran-4-ones (3 and 4) and their oximes (7 — 12) at 270 MHz. For the oximes, 13C NMR spectra have also been recorded. The coupling constants suggest that the oximes 7, 8, 9, and 10, which have the phenyl groups in cis orientation, largely exist in chair conformations with equatorial disposition ...
Tópico(s): Synthesis and biological activity
1997 - Oxford University Press | Bulletin of the Chemical Society of Japan
Minoru Machida, Mayumi Nakamura, Kazuaki Oda, Haruko Takechi, Kosei Ohno, Hideo Nakai, Yasuhiko Sato, Yuichi Kanaoka,
... N possessing a certain functlonai group or a hetera atom, such as ~i e f i n .~ ...
Tópico(s): Photochromic and Fluorescence Chemistry
1987 - Elsevier BV | Heterocycles
Patricia Nitti, Giuliana Pitacco, Vera Rinaldi, Ennio Valentin,
Tópico(s): Chemical Reactions and Mechanisms
1986 - Croatian Chemical Society | Croatica Chemica Acta
Leonard Ogierman, Anna Palka, Bronislaw P. Czech, Alexander Ratajczak,
Tópico(s): Porphyrin and Phthalocyanine Chemistry
1983 - Elsevier BV | Journal of Chromatography A
Helmut Quast, Claus‐Peter Berneth,
... erhalten und erwies sich als Schlüsselverbindung für neue Hetera-adamantane: Methanolat bewirkte intramolekulare Aldoladdition und Cyclisierung von ...
Tópico(s): Eicosanoids and Hypertension Pharmacology
1983 - Wiley | Chemische Berichte