共查询到19条相似文献,搜索用时 196 毫秒
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带有致钝取代基的萘衍生物和SO3的反应研究 总被引:1,自引:0,他引:1
研究了一系列带有醛基、苯甲酮基、羧基、酯基和硝基等致钝取代基的萘衍生物与SO3的反应,1-萘甲醛的单磺化得到比例为55:9:6:30的5^-,6^-,7^-和8^-磺酸取代。1-苯甲酮萘则以83:11:6的比例得到5^-,6^-和7^-磺酸取代物。1-硝基萘专一地得到5位磺经产物。1-萘甲酸和10-萘甲酸甲酯得到5位和8位取代物,有的2位取代萘衍生物均先得到5和8位取代产物,在过量磺化中生成 主产 相似文献
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测定了光诱导SRN1反应生成的N-(α-萘基)咔唑和N-(β-萘基)。光化学反应产物用硅胶板展开,外标法定量,测定波长288nm斑点的线性范围0~2μg,回收率100.5%,相对标准偏差4.8%,N-(α-萘基)咔唑含量<1%,N-(β-萘基)咔唑含量2.26%。 相似文献
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报道了以WatersBondapak^TM,ODS-C18为色谱柱,甲醇:四氢呋喃:水(72:6:22,V/V)为流动相,在UV254nm为测定波长的条件下,利用外标法定量,建立了反相高效液相色谱法测定光诱导反应粗产物中N-(α-萘基)咔唑和N-(β-萘基)咔唑的方法,为光诱导自由基链式亲核取代反应(SRN1)反应机理的探讨提供了可靠的理论依据。 相似文献
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合成2—芳基—3—烷基—7—硝基—1,4—氧硫杂萘—4,4—二氧化物的新… 总被引:2,自引:0,他引:2
在K2CO3-TEBA-DMF体系中,2-(2-氯-4-硝基苯磺酰基)-1-芳基乙酮与各种灶基化试剂发生烷基化-环化反应,得到一系列3-位取代的1,4-氧硫要萘-4,4-二氧化物,并讨论了反应机理和反应条件。 相似文献
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由4-[(3,5-二甲基-4-羟基)苯基]-2,3-杂萘-1-酮与4-氯-N-苯基邻苯酰亚胺通过亲核取代反应、水解反应和脱水反应合成了一种新型不对称含二氮杂萘联苯结构的二酐单体,并对其进行结构表征.由新型二酐单体与市售的二胺单体通过“一步法”溶液聚合反应合成了5种含二氮杂萘酮联苯结构的聚醚酰亚胺.通过FTIR和1HNMR方法研究了聚合物的结构及性能.结果表明,该类聚合物既具有较高的耐热性能,又可以在室温下溶解于非质子极性溶剂,如N-甲基吡咯烷酮和间甲酚等. 相似文献
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以R-(+)-Pulegone为起始原始经1,4-加成、溴代、水解、氧化等9步反应合成了手性辅助试剂(+)-1S,2R,5S-8-β-萘基薄荷醇及其关向异构体(-)-1R,2R,5S-8-β萘基新薄荷醇,总收率分别为24.0%和22.6%。 相似文献
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Kamaladin Gharanjig Mokhtar Arami Shohre Rouhani Hajir Bahrami Barahman Movassagh Niyaz Mohammad Mahmoodi 《中国化学会会志》2007,54(4):1021-1028
Five novel monoazo disperse dyestuffs based on N‐ester‐1,8‐naphthalimide were synthesized. Acenaphthene was nitrated, then oxidized to 4‐nitro‐1,8‐naphthalic anhydride. 4‐Nitro‐1,8‐naphthalic anhydride was reacted with methyl and ethyl glycinate in alcoholic media, followed with reduction. 4‐Amino‐N‐methyl and ethyl glycinate‐1,8‐naphthalimide were obtained. These products were diazotized and coupled with appropriate aromatic amines to give bluish‐red or violet dyestuffs. All intermediates and dyestuffs were purified and characterized by 1H‐NMR, FTIR, DSC, UV‐VIS and Elemental Analysis. Dispersion of dyestuffs was prepared in water and applied to polyester fabrics. The dyed fabrics showed that four of the synthesized dyestuffs were suitable for coloring polyester fibers, producing deep bluish red with very good build up properties. 相似文献
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《合成通讯》2013,43(12):2269-2275
Abstract Mild and efficient procedures have been developed for synthesis of 1,8‐naphthalide and 1,8‐naphthalenedimethanol. In an ice‐water bath, 1,8‐naphthalide was prepared from 1,8‐naphthlic anhydride using LiAlH4 as reducing agent. 1,8‐Naphthalenedimethanol was obtained with good yield from reduction of 1,8‐naphthalic anhydride by LiAlH4 and Lewis acids at room temperature. The effects of various factors on the reduction of 1,8‐naphthalic anhydride with LiAlH4 were investigated. 相似文献
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The nitro group in 2- and 4-nitronaphthalic-1,8-anhydrides can be substituted by amines in certain cases with retention of the anhydride grouping. 相似文献
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Guo-Dong Chen Zhi-Dan Tian Ling-Zhi Wang Jin-Long Zhang Masakazu Anpo 《Research on Chemical Intermediates》2011,37(8):891-899
The fluorescent dye molecules, 4-piperidine-1,8-naphthalimide, were successfully fixed into the amino modified pore channel
of mesoporous MCM-41 type materials by in situ reaction of 4-piperidinyl-1,8-naphthalic anhydride with the amino group. The
formation of amide bonds on the pore surface was verified by infrared spectra. The maximum fluorescence emission peak of this
hybrid material has a red shift of 13 nm compared to that of a naphthalimide derivative in ethanol solution. Moreover, the
fluorescence intensity of dye molecules grafted into Ce-doped MCM-41 is higher than that in pure silica MCM-41. This phenomenon
is attributed to the inhibited internal electron transfer from piperidine to naphthalimide groups by Ce4+, thus improving the fluorescence intensity of the naphthalimide group. The unique fluorescence behavior of the 1,8-naphthalimide
derivative doped hybrid mesoporous material makes it a good candidate for the metal ions microdetection. 相似文献
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Danuta Sek Andrzej Wanic Ewa Schab-Balcerzak 《Journal of polymer science. Part A, Polymer chemistry》1995,33(3):547-554
A series of model compounds from 4-benzoyl-1,8-naphthalene anhydride and aromatic amines and diamines has been synthesized. The influence of the reaction conditions on the structure of the compounds obtained has been investigated to explain the high-temperature polycondensation reaction mechanism. It was found that at high-temperature polycondensation of 1,8-naphthalene-type anhydrides with aromatic amines, isoimides with cis and and trans structures are formed instead of amic acids. The only trans isoimides may isomerize to imide structure. © 1995 John Wiley & Sons, Inc. 相似文献
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A preparation of a series of N- and N-,4-substituted 1,8-naphthalimides using water as solvent under microwave irradiation, which proceeded via efficient and green reaction of 1,8-naphthalic anhydride derivatives with different amines, is described. 相似文献
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The electronic nature of the substituent in naphthalic anhydride has a substantial effect on the isomeric composition of the naphthaloperinones formed in reactions with 1,8-naphthylenediamine. An electron-accepting substituent in the 4 position of naphthalic anhydride promotes predominant retention of the carbonyl group in the 1 position, while an electrondonating substituent promotes retention of the carbonyl group in the 8 position of the naphthalene ring. 10-Amino- and 11-amino-14H-benzo[4,5]isoquinolino[2,1-a]perimidin-14-ones were synthesized.For Communication II see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1420–1422, October, 1970. 相似文献
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A. V. Guttsait K. A. Balodis I. A. Meirovits 《Chemistry of Heterocyclic Compounds》1993,29(10):1226-1229
By the reaction of the anhydride of 4-nitronaphthalene-1,8-dicarboxylic acid with 2-aminobenzoselenol zincate, followed by the action of isoamyl nitrite on the reaction mixture, the anhydride of benzo[k,l]selenoxanthene-3,4-dicarboxylic add has been synthesized. Through the reaction of this anhydride with primary amines, a number of corresponding imides have been synthesized.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1426–1429, October, 1993. 相似文献