丁基

The effects of the food additive butylated hydroxyanisole and the antibiotic Norfloxacin on swordtail fish were measured by considering a number of parameters, including glutathione S\|transferase, catalase, 7-ethoxyresorufin-o-dealkylases and malondialdehyde contents.

研究了叔丁基对羟基茴香醚(butylated hydroxyanisole， BHA)和诺氟沙星(norfloxacin， NFLX)对剑尾鱼的急性毒性及其肝脏谷胱甘肽硫转移酶、丙二醛、过氧化氢酶及7-乙氧基异吩恶唑酮-脱乙基酶活性的影响。

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

In the field of visible photosensitive resin, the absorption spectrum, excited state, solvent polarity effect, fluorescence spectrum, fluorescence quenching, concentration effect, photo fading, reaction mechanism as well as photopolymerization kinetics of xanthene iodonium salts and cyanine dye-borate were discussed. It is found that under the radiation of visible light, intra-ion-pair electron transfer reactions occur in bis salt of fluorescein and unsymmetrical trimethine cyanines containing quinoline end group triphenyl-butylboron, and the fading rate is very high.

在可见光敏树脂部分，通过对呫吨染料碘鎓盐和菁染料-硼盐体系的吸收光谱性质、激发态性质、溶剂极性效应、荧光光谱、荧光猝灭、浓度效应、光褪色反应、光聚合动力学等的研究，结果发现：荧光黄双二苯基碘鎓盐体系和含喹啉环端基不对称三甲川菁染料-三苯基丁基硼盐体系在可见光作用下均发生离子对内电子转移反应，且光褪色反应速率很高。

It starts with an aldol-type condensation in which a solution of the now commercially available E -[3-(4-fluorophenyl)-1-(1-methylethyl)-1 H-indol-2-yl]-2-propenal, 4 , 5 in THF is added to the preformed sodium-lithium salt of tert -butyl acetoacetate 5 at room temperature in THF.

它从一个醛型缩合其中一个解决现在的电子商业可-[3-(4-fluorophenyl)-1-(1-methylethyl)-1吲哚-2-基]-2-丙烯醛、4，5年增加了预四氢呋喃钠-锂盐叔丁基乙酰四氢呋喃在常温5。

N butyl 2 ethoxy thioacridone ; acridone ; electron transfer ; fluorescence

N-丁基-2-乙氧基硫代吖啶酮；吖啶酮；电子转移；荧光

The results showed that upon Xe lamp irradiation,N butyl 2 ethoxy thioacridone was transformed into corresponding acridone and the presence of the lattter was confirmed by UV visible absorbtion spectrum and mass spectrum.

结果表明：在Xe灯光照下，N 丁基 2 乙氧基硫代吖啶酮转变成了相应的吖啶酮，用紫外可见光谱和质谱证实了吖啶酮的存在；生成的吖啶酮可被二苯基碘盐猝灭，它们之间的荧光猝灭遵循电子转移的反应机理。

Third, Polymerization behaviors of alkenyl substituted Cp Lanthanide complexes as Methyl Methacrylate polymerization catalysts were also studied.

最后，本文还分别考察了烯丁基和烯丙基取代茂的稀土络合物对甲基丙烯酸甲酯的催化聚合反应。

The tricyclic system 5-6-7 of Stenine skeleton was finished, At the same time, also finished the skeleton of Aspidosperma via reduction free radocal cyclization and Clemmensen reductive rearrangement.

并在此基础上应用三丁基锡氢的还原自由基环化和跨环Clemmensen还原重排为关键反应，完成了Aspidosperma的骨架化合物的构筑。

Synthesis process Molecular Formula:〓 Molecular Weight: 394 Chemicla name: N-(2, 3-dihydro-2, 7-dimethyl-benzofuran-1-acyl)-N'-tert-butylN'-(3, 5-dimethyl benzoyl) hydrazine Structural formula:〓 This article define a synthesis method of JS118 with (2, 3-dihydro-2, 7-dimethylbenzofuranyl)-6-formic acid, tert-butyl hydrazine hydrochloride acid and 3, 5-dimethyl benzoic acid as main intermediate through four steps of reaction involving, acyl chloridation condensation and so on.

本文主要的研究工作内容：(1)以N-特丁基双酰肼为先导结构，利用分子等排原理和类同合成法进行先导设计，有目的、有选择地重点改变R〓、R〓基团，将具有不同取代基的苯环以及呋喃环、苯并呋喃环、吡咯环、吡啶环等杂环、稠杂环与先导结构进行有机的组合。

The basic functionalized ionic liquid, 1 -butyl-3-methylimidazolium hydroxide OH, was prepared and used to catalyze the Knoevenagel condensation of aromatic aldehydes with malononitrile or ethyl cyanoacetate.

合成了碱性功能化离子液体氢氧化1-丁基－3-甲基咪唑，研究了将其作为催化剂催化芳香醛和丙二氰、氰基乙酸乙酯的Knoevenagel缩合反应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新