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水合茚三酮与芳甲基酮、水合肼缩合环化制得2-芳基-3,4-二氮杂芴酮(2); 2经还原得2-芳基-3,4-二氮杂芴(3).2与2-溴联苯格氏试剂反应得到中间体叔醇(4); 4在酸性条件下关环合成了2-芳基-3,4-二氮杂螺二芴,其结构经1H NMR,13C NMR和元素分析表征. 相似文献
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Seven kinds of lanthanocene complexes were prepared by the reaction of tridentate Schiff base { N-(2-methoxyphenyI)sali-cylideneamine) with tris(cyclopentadienyl)lanthanide tetrahy-drofuranate or bis( cyclopentadienyl) lanthanide chloride te-trahydrofuranate in THF.All the complexes were characterized by MS,EA and IR respectively.The structure of {Cp2LnC14H13NO2) Ln=Sm,Dy,Y,Er} (1-4) was further confirmed by X-ray determination of Cp2Sm(C14H13NO2) (1) which indicates that the complex is monomeric in which central metal is coordinatively saturated by two cyclopentadienyl rings,two oxygens and one nitrogen of the ligand.The i-somerization of 1,5-hexadiene explains that complexes (1-4) isomerize this monomer into a mixture of 1,4-hexadiene,2,4-hexadiene,1,3-hexadiene,methylenecydopentane and methyl -cydopentene.Similarly complexes {CpLn(Cl)C14 H13NO2) (THF) (Ln=Sm,Dy,Y,Er)} (5-7) polymerize methyl-methacrylate (MMA.) to give polyMMA (PMMA) in 51.8% yield and high molecular weight (274×103),which shows nar 相似文献
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侧链取代基含有氧原子的环戊二烯与席夫碱混合配体的镧系化合物催化甲基丙烯酸甲酯聚合 总被引:4,自引:0,他引:4
侧链取代基含有氧原子的环戊二烯与双水杨醛邻环己二胺席夫碱混合配体的镧系化合物[(η5:η1-MeOCH2CH2C5H4)Ln][(μ:η-OC20H20N2O)]2[(η5-MeOCH2CH2C5H4)Ln](Ln=Sm(1),Dy(2)),[(MeOCH2CH2C5H4)2Yb]2(OC20H20N2O)(3),[(C4H7OCH2C5H4)2Dy]2(OC20H20N2O)(4)与三乙基铝体系催化甲基丙烯酸甲酯(MMA)的聚合,可以得到高分子量(粘均分子量Mη>100,000),窄分子量分布(Mw/Mn<3)的聚甲基丙烯酸甲酯(PMMA).不同茂环上的取代基及稀土元素使这类化合物形成了不同的分子结构,并且影响了它们的催化活性.化合物(3)具有较高的活性(转化率∶54.1%,Mη=287.1×103).考察了催化剂浓度,助催化剂浓度,聚合温度和时间对化合物(3)/Al(Et)3体系催化聚合反应的影响,最佳聚合条件为:60℃,24h,MMA∶催化剂∶助催化剂(摩尔比)=1000∶1∶10.利用核磁,凝胶渗透色谱仪(GPC)等对聚合物进行表征. 相似文献
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The title compound, 2,10-di-tert-butylindolo[3,2,1-jk]carbazole (C26H27N, Mr=353.49), has been synthesized by palladium-catalyzed intramolecular arylation and characterized by 1H NMR, 13C NMR and X-ray crystal structure determination. The crystal crystallizes in the monoclinic system, space group P21/c with a=13.6409(5), b=11.6706(4), c=13.1678(5), β=100.6180(10)°, V=2060.39(13)3 , Z=4, Dc=1.140 mg/m3 , μ=0.065mm-1 , F(000)=760, the final R=0.0456 and wR=0.1209 for 3012 observed reflections (I > 2σ(I)). 相似文献
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