共查询到20条相似文献,搜索用时 86 毫秒
1.
报道了4-甲氧基.2-溴代丁烯内酯(4)与几种醇通过串联的双。Michael加成及分子内的亲核取代反应,简便地得到了环丙烷类化合物8。经元素分析、IR、^1HNMR、^13CNMR和MS对目标产物进行了结构表征,其中8a通过单晶培养和x射线晶体测定,确定了它的立体结构。 相似文献
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Masaru Kawaguchi Atsushi Ikeda Seiji Shinkai Ion Neda 《Journal of inclusion phenomena and macrocyclic chemistry》2000,37(1-4):253-258
[60]Fullerene (C60)-calix[n]areneinteractions were studied in toluene:MeCN = 10:1 (v/v)using an electrochemical method. In the presence ofhomooxacalix[3]arenes and calix[5]arenes, bothEpc and pa shifted to the negativepotential, whereas they were scarcely affected by theaddition of calix[4]arenes. The2values electrochemically determined forthe association with C60
- are generallysmaller than the 1 valuesspectroscopically determined for the association withC60. The tendency indicates that thecharge-transfer-type interaction is one of thedriving forces for C60 inclusion.thanks|Author for correspondence 相似文献
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Romanova I. P. Yusupova G. G. Nafikova A. A. Kovalenko V. I. Sinyashin O. G. 《Russian Chemical Bulletin》2002,51(8):1491-1496
A single di(azahomo)[60]fullerene isomer was prepared for the first time by the reaction between [60]fullerene and isocyanurato-substituted azide. The structure of the product was established by 1H and 13C NMR, UV, and IR spectroscopy. 相似文献
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Masaki Ozawa Jing Li Kentaro Nakahara Lixin Xiao Hiroharu Sugawara Koichi Kitazawa Kazushi Kinbara Kazuhiko Saigo 《Journal of polymer science. Part A, Polymer chemistry》1998,36(17):3139-3146
A novel series of polyamides having [60]fullerene moieties in the main chain were synthesized by a direct polycondensation of [60]fullerenobis(acetic acid) or [60]fullerenobis(acetic acid)/isophthalic acid mixture with a diamine in the presence of triphenyl phosphite and pyridine. Various properties of the polyamides were characterized by means of IR, GPC, TGA, DSC, UV–visible, and photoluminescence. The molecular weight Mw of the [60]fullerene-containing polyamides was observed in the range from about 300,000 to 3,000; upon the changing of the ratio of [60]fullerenobis(acetic acid)/isophthalic acid in the starting mixture, the resulting Mw decreased with increasing the ratio. Most of the thermal and optical properties gradually changed as the ratio changed; the major optical absorption band in visible range exhibited a significant tailing, which shifted toward a longer wavelength, while the photoluminescence spectrum red-shifted with increasing [60]fullerene content. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 3139–3146, 1998 相似文献
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《高分子科学杂志,A辑:纯化学与应用化学》2013,50(12):1263-1273
Abstract A new synthetic approach for the fabrication of core‐shell like conducting elastomers was described. The approach utilized the facile intermolecular self‐assembly of poly(dimethylsiloxane) (PDMS) in DMSO leading to formation of a core particle, while soluble oligoaniline (A x ) segments dispersed in the solution phase resembling a shell overlayer for building the morphology. This morphology was demonstrated by bis[penta(tetraanilinofullereno)] bis(aminopropyl)poly(dimethylsiloxane) [PDMS‐(F5A4)2] triblock co‐oligomers synthesized using a functionalized C60 derivative as a linker. Observation of 1H NMR spectroscopic responses on the PDMS particle formation in DMSO‐d 6 is consistent with the proposed core‐shell geometry with oligoaniline moieties located at the shell overlayer. 相似文献
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I. P. Romanova O. G. Sinyashin G. G. Yusupova V. I. Kovalenko Yu. Ya. Efremov Yu. V. Badeev I. I. Vandyukova I. A. Arakelyan 《Russian Chemical Bulletin》1999,48(11):2144-2148
The reaction of [60]fullerene with diphenylphosphinoyl azide in toluene or ino-dichlorobenzene in the presence of traces of water affords 2-[N-(diphenylphosphoryl)amino]-1-hydroxy[60]fullerene This reaction in THF gives a mixture of (N-diphenylphosphoryl)[60]fullerenol[1,2-b]aziridine and a product of partial hydrolysis of the bisadduct of phosphorylated azide and fullerene.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2168–2172, November, 1999. 相似文献
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V. V. Yanilkin V. P. Gubskaya N. V. Nastapova L. Sh. Berezhnaya I. E. Ismaev Yu. Ya. Efremov I. A. Nuretdinov 《Russian Chemical Bulletin》2004,53(12):2793-2797
The combined electrochemical reduction of fullerene C60 in the presence of p-bromo-benzoyldibromomethane or bis(diisopropoxyphosphoryl)dibromomethane at a brass electrode in a mixed solvent o-dichlorobenzene-MeCN (3:1 v/v)/0.05 M Bu4NBF4 at room temperature affords 61-(p-bromobenzoyl)methano[60]fullerene or 61,61-bis(diisopropoxyphosphoryl)methano[60]fullerene, respectively, in 50% yields.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2681–2685, December, 2004. 相似文献
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The homodinuclear bismetallacyclopropa[60]fullerene complexes (η2-C60)M(μ-η1,η1-trans-Ph2PCHCH PPh2)2M(η2-C60) (1, M = Pt; 2, M = Pd) were prepared by reaction of C60 with M(dba)2 (dba = dibenzylideneacetone) and trans-1,1′-bis(diphenylphosphino)ethylene in 82% and 92% yield, whereas reaction of C60 with Pd(dba)2 and trans-dppet followed by treatment with C60 and Pt2(dba)3 gave rise to the heterodinuclear complex (η2-C60) Pd(μ-η1,η1-trans-Ph2PCHCH PPh2)2Pt(η2-C60) (3) in 65% yield. Mechanistic study showed that these reactions involve the intermediates of monometallacyclopropa[60]fullerene diphosphine ligands (η2-C60)M(η1-trans-Ph2PCHCHPPh2)2 (4, M = Pt; 5, M = Pd). All the mono- and bismetallacyclopropa[60]fullerene complexes 1-5 have been fully characterized by elemental analysis and spectroscopy, as well as for 2 by X-ray crystallography. 相似文献
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I. P. Romanova G. G. Yusupova O. A. Larionova A. A. Balandina Sh. K. Latypov V. V. Zverev D. G. Yakhvarov G. L. Rusinov O. G. Sinyashin 《Russian Chemical Bulletin》2006,55(3):502-506
The reaction of fullerene C60 with 2-azido-5-nitropyrimidine afforded 1-(5-nitropyrimidin-2-yl)[60]fullereno[1,2-b]aziridine, whose electrochemical reduction proceeds more easily than the reduction of nonmodified C60.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 484–488, March, 2006. 相似文献
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Romanova I. P. Kalinin V. V. Nafikova A. A. Yakhvarov D. G. Zverev V. V. Kovalenko V. I. Rusinov G. L. Plekhanov P. V. Charushin V. N. Sinyashin O. G. 《Russian Chemical Bulletin》2003,52(1):173-178
The reaction of [60]fullerene with 2-azidopyrimidines affords fullerenoimidazopyrimidines, whose electron affinity is higher than that of nonmodified C60. 相似文献
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Romanova I. P. Yusupova G. G. Nafikova A. A. Yakhvarov D. G. Larionova O. A. Sinyashin O. G. 《Russian Chemical Bulletin》2004,53(1):144-147
A reaction of [60]fullerene with O,O-dibutyl azidophosphate affords a first representative of phosphorylated azahomo[60]fullerenes, which is easier to reduce electrochemically than the starting C60. 相似文献