共查询到20条相似文献,搜索用时 93 毫秒
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斯德酮类化合物的合成及生物活性研究李正名,范传文,王素华(南开大学元素有机化学研究所,元素有机化学国家重点实验室,天津,300071)关键词斯德酮,合成,生物活性斯德酮(Sydnone)化合物是一类介-离子(Meso-ionic)化合物,由于其结构有... 相似文献
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利用环己二酮单腙芳构化反应, 得到9H, 9H, 11H, 11H, 12H, 12H-六氢化苯并[9,10]-(1H, 1H, 3H, 3H, 4H, 4H, 5H, 5H, 7H, 7H, 8H, 8H-十二氢)菲-2, 6, 10-三酮腙, 然后与季戊四醇反应, 得到9H, 9H, 11H, 11H, 12H, 12H-六氢化苯并[9,10]-(1H, 1H, 3H, 3H, 4H, 4H, 5H,5H, 7H, 7H, 8H, 8H-十二氢)菲-2,6,10-三酮缩三(2,2-二羟甲基-1,3-丙二醇), 再与9-[4-(2,6-二硫杂环己基)苯基]-3-[4-(二甲酯基甲基)苯基]-2,4,8,10-四氧杂螺[5.5]十一烷反应, 制成标题化合物. 中间体和标题化合物经过IR, 1H NMR, MS和元素分析表征. 相似文献
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1,3—偶极环加成反应在杂螺环化合物合成中的应用 总被引:1,自引:0,他引:1
氧化腈与4,4-亚甲基-1-甲基哌啶的1,3-偶极环加成反应生成了杂螺[4.5]葵烷化合物,反应具有立体专一性.产物经LiAlH4还原生成了γ-氨基醇,最后经插入C-1单元扩环生成了新的杂螺[5.5]十一烷化合物 相似文献
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对于多螺环化合物特别是第二代稠杂螺环树枝状化合物来说,按照IUPAC有关系统命名原则,从螺结构的角度来命名由于太复杂而几乎不可能.本文通过亚基取代途径对第一代螺环结构的简化,方便地系统命名了一种第二代稠杂螺环树枝状化合物.这些六螺化合物可以系统地命名为:1,2,3,4,5,6,7,8,9,10,11,12-十二氢化-2,2:6,6:10,10-三[3,3-二(烷氧羰基)亚环丁-1,1-二甲氧基]苯并[l]菲.通过这一途径,更高代螺环树枝状化合物及其它类型多螺化合物有望可以简单地系统命名. 相似文献
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一类含多氟烷基侧链的螺环化合物的合成及结构表征 总被引:2,自引:0,他引:2
A series of spiro compounds have been synthesized via several steps.The structure of these compounds wereconfirmed by ~1H NMR,~(13)C NMR,IR,MS spectra and X-ray diffraction analysis.The possible mechanism to formthese products was also proposed. 相似文献
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Denisa Dumitrescu Sergiu Shova Constantin Draghici Marcel Mirel Popa Florea Dumitrascu 《Molecules (Basel, Switzerland)》2021,26(12)
3-Arylsydnones bearing fluorine and bromine atoms on the benzene ring were synthesized from N-nitroso-2-fluorophenylglycines and characterized by NMR spectroscopy. These were employed further in synthesis of the corresponding 1-(2-fluorophenyl)pyrazoles by 1,3-dipolar cycloaddition reaction with dimethyl acetylenedicarboxylate (DMAD) as activated dipolarophile. The sydnones as reaction intermediates were characterized by single crystal X-ray diffraction analysis showing interesting features such as halogen bonding as an important interaction in modeling the crystal structure. 相似文献
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A series of 4-formyl-, 4-acetyl- and 4-(l'-hydroxyethyl)sydnones have been prepared in good yields by reaction of sydnone with butyllithium or a Grignard reagent and N,N-dimethylformamide, N,N-dimethylacetamide and acetylaldehyde, respectively. 相似文献
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Synthesis of a 1,2,7,8-Tetraoxa-spiro[5.5]undecane 总被引:1,自引:0,他引:1
Synthesis of a new spiro organic peroxide is described. The peroxy bonds were incorporated into the substrate framework via an acid-catalyzed ketal exchange reaction using hydrogen peroxide as the source of peroxy linkage. The hydroperoxyl groups were then bonded at the OH ends via Hg(II)-induced electrophilic additions to the C-C double bonds, giving a novel sprio structure with one peroxy bond in each of the two six-membered rings. The ester functionalities in the side chains also make it possible to conduct further structural modifications. 相似文献
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二代螺环树形化合物1,2,3,4,5,6,7,8,9,10,11,12-十二氢-2,2;6,6;10,10-三[3,3-二(烷氧羰基)-1,1-环亚丁基二甲氧基]三亚苯基的合成 总被引:1,自引:0,他引:1
以1,4-环己二酮、丙二酸二乙酯及多元醇等为原料, 经过两次“一锅煮”法合成了六种二代螺环树形化合物1,2,3,4,5,6,7,8,9,10,11,12-十二氢-2,2;6,6;10,10-三[3,3-二(烷氧羰基)-1,1-环亚丁基二甲氧基]三亚苯基螺环树形化合物, 其中烷氧基为异戊氧基、三羟甲基甲氧基、2,2-二溴甲基-3-羟丙氧基、2,2-二羟甲基丙氧基、二羟甲基膦甲氧基和(N-羟甲基-N-二羟甲基氨基乙基)甲氧基. 利用IR, NMR, MS和元素分析对合成的化合物进行了结构认证, 对影响反应的因素进行了讨论. 相似文献
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介绍了西他沙星的合成方法,包括螺环片段和三元环片段的合成,并对各合成方法的工业化应用前景进行了比较与评述.参考文献18篇. 相似文献
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一锅法合成甲基丙烯酰基封端的PLA-PEG-PLA大分子单体 总被引:2,自引:0,他引:2
以辛酸亚锡[Sn(Oct)2]为催化剂、聚乙二醇为引发剂引发丙交酯开环聚合,用水终止反应后再加入甲基丙烯酸酐反应即可得到甲基丙烯酰基封端的PLA-PEG-PLA大分子单体。上述两步反应可一锅进行,操作简便、收率高。采用GPC、FTIR、^1H-NMR、TG、XRD等分析手段表征了大分子单体的结构和性质。所得大分子单体的水溶液在光引发剂存在下,能被UV引发光聚合形成水凝胶。该水凝胶作为可降解生物材料可用于药物控释栽体和组织工程支架。 相似文献
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N-(6-methoxy-3-pyridyl)-sydnone (I), N-(4-nitrobenzyl)sydnone (II-1), and N-(2-nitrobenzyl)sydnone (II-2) have been prepared. Condensation of 2, 4-dinitrochlorohenzene with N-(carbethoxymethyl)sydnone (II-4) produced N-[(2, 4-dinitrophenyl) carbethoxymethyl]-sydnone (II-5). Under normal conditions none of them are photochromic. 相似文献
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A series of spiro compounds with polyfluoroalkyl and phosphonate ester groups has been synthesized via several steps. The structures of these compounds were confirmed by 1H NMR,13C NMR, infrared (IR), and mass spectrometry (MS) as well. The possible reaction mechanism for the formation of these products was also proposed. 相似文献