并四苯
- 与 并四苯 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Three new ternary copper complexes: 3.5H2O(1)、 2H2O (2) sand 1.5H2O(3)(phen=1, 10-phenanthroline, tatp=1, 4, 8, 9-tetranitrogen, dppz =dipyrido [3,2-a; 2,3-c]phenazine, Gly-L-Val=Gly-L-Valine), were synthesized characterized by elemental analysis, molar conductivity, IR and UV-Vis spectroscopes.
本文合成了3个新的三元铜配合物:3.5H2O(1)、2H2O(2)和1.5H2O(3)[Gly-L-Val=甘缬二肽,Phen=l,10-邻菲咯琳,TATP=l,4,8,9-四氮三联苯,DPPZ=二吡啶并[3,2-a;2,3-c]吩嗪]。通过元素分析、红外光谱、紫外-可见光谱以及摩尔电导率测定对这些配合物进行了表征。
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With L-DOPA as the starting chiral phenylalanine derivatives, construction of the skeleton of Phthalascidin was studied. Firstly, starting from L-DOPA and 3,4-dimethoxyphenylalanine, an amide 〓 was obtained, and a modeling cyclization reaction was carried out but failed to give the anticipated product.
二、对由苯丙氨酸甲酯衍生物通过Bischler-Napieralski反应合成四氢异喹啉—3—甲酯进行了研究,通过研究首次发现,生成苄基噁唑的反应是正常的B-N反应的竞争性反应,并从机理上给予了解释,所得出的结论具有一定的规律性,在杂环的合成方面具有一定的应用价值。
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Four non-ionic europium complexes,〓-phen(11),〓·bipy(12),〓·dia(13) and 〓(14)(TTA=2-thenoyltrifluoroacetone, DBM=dibenzoylmethane, phen=phenanthroline, bipy=2,2'-bipyridine, dia=4,5- diazafluoren-9-one, dmbp=4,4'-dimethyl-2,2,-bipyridine), were synthesised and the triboluminescent phenomena of 12, 13 and 14 were firstly observed. Structure determinations of 11,12 and 14 were carried out. The triboluminescence maxima of 12 and 13 are similar to those of their photoluminescence. X-Ray structure analyses show that Eu atoms all exhibit eight-coordinate tetragonal antiprismatic geometries and complexes 11, 12 and 14 are all centrosymmetric.
二、合成了四个非离子型的铕的配合物:〓、〓、和〓(14)[HTTA=2-噻吩三氟甲酰丙酮,DBM=二苯甲酰基甲烷,phen=邻菲罗啉, bipy=2,2'-联吡啶,dia=4,5-二氮杂芴-9-酮,dmbp=4,4'-二甲基-2,2'-联吡啶],首次报道了12、13及14的摩擦发光性质,测定了11、12及14的晶体结构,并系统地讨论了晶体结构和摩擦发光活性之间的关系。12及13的摩擦发光光谱的极大值均类似与其相应的光致发光光谱,表明它们有相同的激发态。
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It is manufactured through kneading, cold pressing and post-treatment; and the materials for the synthetic brake shoe include butadiene-acrylonitrile rubber, phenolic resin, graphite, iron powder, barium sulfate, potash feldspar powder, composite fiber, sulfur, hexamethine tertramine, polymethylene aniline, 2-mercaptan benzothiazole, zinc oxide and toluene.
同时本发明的提供了采用捏合、冷压、后处理工艺来制造新型高摩擦系数合成闸瓦。组成新型高摩擦系数合成闸瓦的各组分重量百分比如下:丁腈橡胶为6.20%,酚醛树脂为10.00%,石墨为15.00%,铁粉为11.03%,硫酸钡为30.00%,钾长石粉为5.00%,复合纤维为20.20%,硫磺为1.00%,六次甲基四胺为1.00%,聚亚甲基聚苯胺0.12%,2-硫醇基苯并噻唑0.15%,氧化锌0.30%,甲苯8.0%。
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A novel method of deprotection of benzyl and benzylidene acetal groups with K/tBuNH2/tBuOH/THF/18-crown-6 system was discovered and investigated.
四、发现并开发了K/〓BuNH〓/〓BuOH/THF/18-crown-6体系脱苄基和缩苯甲醛的反应,提出了可能的反应机理。
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Brilliant green and N,N,N9,N9-tetramethyl-1,4-phenylenediamine dihydrochloride were from Aldrich, and celite from Acros.
亮绿和N, N , N9号, N9号-四甲基-1,4苯二胺盐酸盐来自爱蝶( steinheim ,德国),并从硅藻土acros。
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As a result of aromatization of organic matter during the thermal cracking of original bitumen into gas,the aromatic hydrocarbons in the bitumen are characterized by abnormally abundant tetra-and penta-cyclic compounds,and predominated by parent aromatic compounds without alkyl chain,such as fluoranthene,pyrene,chrysene, benzofluoranthene etc.
沥青的芳烃组成独特,富含四、五环芳烃化合物,且以萤蒽、芘、和苯并萤蒽等无烷基取代的母体芳烃化合物为主,反映出沥青裂解成气过程中的有机质芳构化作用。
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With addition of benzene and under certain current density and temperature, the indirect organic electrosynthesis using lead tetraacetate as media could be carried out in one compartment and no lead metal was deposited on the counter electrode.
在该醋酸电解液中加入一定量的苯,控制一定的电流密度、温度等条件可以阻化铅在对电极上的析出,实现了无隔膜电解槽中四醋酸铅的电解生成,并应用于间接有机电合成。
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AIM: To investigate the cardiac actions of 2--1 , 2, 3, 4-tetrahydro-6,7-dimethoxyl-l-[1'-(6''-methoxy-2''-naph-thalenyl ) ethyl ]-isoquinoline ( CPU57 ) by comparison with nifedipine and focus on its mechanism of actions.
目的:研究2--1,2,3,4-四氢-6,7-二甲氧基-1-[1′-(6&-甲氧-2&-萘)乙基]-异喹啉(CPU57)对心脏的作用并与硝苯地平进行比较,着重于其作用机制的研究。
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Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.
在以硫酸二甲酯为甲基化试剂对3,4-二溴马来酰亚胺进行N-甲基化反应合成3,4-二溴-N-甲基马来酰亚胺的同时,以碳酸二甲酯为甲基化试剂,对3,4-二溴马来酰亚胺、邻苯二甲酰亚胺、琥珀酰亚胺等酰亚胺类化合物的N-甲基化反应进行了研究;考察了1,4-二氮杂双环[2.2.2]辛烷,1,8-二氮杂双环[5.4.0]十一碳-7-烯、碳酸钾和四丁基溴化铵等作为催化剂对碳酸二甲酯N-甲基化反应的反应时间和收率等的影响,并应用碳酸二甲酯为甲基化试剂,合成了N-甲基-3-溴-4-(1-甲基-吲哚-3)-马来酰亚胺。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。