tert-butyl      叔丁基(126) 丁基(142) 叔丁(75) 叔丁酯(61) 叔丁基过氧化氢(7)   叔丁基      Using 2-methyl-6--tert-butyl phenol as raw material, the suitable reaction condition of 3,3′-dimethyl-5,5′-di-tert-butyl-4,4′-diphenoquinone(DMDB-2) is that reaction time is 3.25h, reaction temperature is 51℃, the size of KMnO4 is more than 120 items and the yield is 89.91%.      以2-甲基-6-叔丁基苯酚合成了3, 3′-二甲基-5, 5′-二叔丁基联苯醌(DMDB-2),得到最佳反应条件:反应时间3.25小时,反应温度为51℃,KMnO4粒度120目,收率89.91%。 短句来源      The conversion of phenol is 69% and the selectivity of p-tert-butyl phenol is 85% at the conditions of normal pressure temperature 175℃, GHSV 2000h~(-1) and molar ratio of tert-butyl alcohol to phenol 1.2: 1.      在常压、175℃、气体空速2000h~(-1)、叔丁醇/苯酚=1.2∶1(mol)条件下,苯酚转化率为69%,对叔丁基苯酚选择性达85%。 短句来源      SYNTHESIS OF PARA TERT-BUTYL PHENOL AND 2,4-DITERT-BUTYL PHENOL OVER BETA ZEOLITES      Beta沸石上合成对叔丁基苯酚和2,4-二叔丁基苯酚 短句来源      Tert-butyl alcohol conversion of 55.83%,selectivity to ETBE of 95% and ETBE yield of 52.46% were attained under the optimum condition.      最佳操作条件下乙基叔丁基醚的产率为52.46%,叔丁醇转化率为55.83%,选择性为95%。 短句来源      Materials and Methods The effect of L929 cell-conditioned medium (L929-CM) containing M-CSF on U937 cells incubated with tert-butyl hydroperoxide (tbOOH) was Investigated by electrophoresis and DNA fragmentation determination methods.      材料与方法用富含M－CSF的L929细胞条件培养液（L929－CM）作为M－CSF来源，以凝胶电泳、DNA断裂定量等方法观察了M－CSF对叔丁基氢过氧化物（tbOOH）诱导的U937细胞DNA断裂损伤的影响。 短句来源 更多          丁基      Using 2-methyl-6--tert-butyl phenol as raw material, the suitable reaction condition of 3,3′-dimethyl-5,5′-di-tert-butyl-4,4′-diphenoquinone(DMDB-2) is that reaction time is 3.25h, reaction temperature is 51℃, the size of KMnO4 is more than 120 items and the yield is 89.91%.      以2-甲基-6-叔丁基苯酚合成了3, 3′-二甲基-5, 5′-二叔丁基联苯醌(DMDB-2),得到最佳反应条件:反应时间3.25小时,反应温度为51℃,KMnO4粒度120目,收率89.91%。 短句来源      The conversion of phenol is 69% and the selectivity of p-tert-butyl phenol is 85% at the conditions of normal pressure temperature 175℃, GHSV 2000h~(-1) and molar ratio of tert-butyl alcohol to phenol 1.2: 1.      在常压、175℃、气体空速2000h~(-1)、叔丁醇/苯酚=1.2∶1(mol)条件下,苯酚转化率为69%,对叔丁基苯酚选择性达85%。 短句来源      Shape-Selective Synthesis of 2,6-Di(tert-butyl)naphthalene over HY Zeolite      HY沸石上2,6-二叔丁基萘的择形合成 短句来源      SYNTHESIS OF PARA TERT-BUTYL PHENOL AND 2,4-DITERT-BUTYL PHENOL OVER BETA ZEOLITES      Beta沸石上合成对叔丁基苯酚和2,4-二叔丁基苯酚 短句来源      Tert-butyl alcohol conversion of 55.83%,selectivity to ETBE of 95% and ETBE yield of 52.46% were attained under the optimum condition.      最佳操作条件下乙基叔丁基醚的产率为52.46%,叔丁醇转化率为55.83%,选择性为95%。 短句来源 更多          叔丁      Synthesis of tert-Butyl 3,5-Dihydroxy-4-methylhexanoate      3,5-二羟基-4-甲基己酸叔丁酯的合成 短句来源      However,there is a change of reaction order for>n-C_6 and tert-butyl thiols,i,e.      C_6以上伯硫醇和叔丁硫醇在反应过程中发生级数变化,反应初始阶段为一级; 短句来源      When the mass ratio of styrene and tert-butyl methacrylate is 54∶46,the proportion of corresponding copolymer blocks is about 79∶21.      当苯乙烯与α-甲基丙烯酸叔丁酯投料质量比为54∶46时,所得共聚物相应嵌段质量比为79∶21左右。 短句来源      The optimum reaction conditions are as following: reflux temperature, the molar ratio of anhydride to alcohol is 1.4∶1, reaction time is 2 hours, the mole fraction of copper(Ⅱ) bromide in alcohol is 0.5%, the yield of tert-butyl acetate is 83.46%.      溴化铜催化合成乙酸叔丁酯的优化条件为:回流温度下,酐醇摩尔比为1.4∶1,溴化铜在醇中的摩尔分数为0.5%,反应2h,乙酸叔丁酯收率达83.46%。 短句来源      Macro-intermediate with Br-end Poly(tert-butyl methacrylate)(PtBMA-Br) was synthesized by Atom Transfer Radical Polymerization(ATRP),with ethyl-2-bromopropionate as initiator,a compound system of CuCl/ N,N,N′,N″,N″-penta-methyldiethylenetri-amine(PMDETA) as catalyst.      以α-溴代丙酸乙酯(EPN-Br)为引发剂,氯化亚铜(CuCl)与N,N,N′,N″,N″-五甲基二亚乙基三胺(PMDETA)组成的混合体系为催化剂,使甲基丙烯酸叔丁酯(tBMA)进行原子转移自由基聚合(ATRP),得到了端基为溴原子的聚甲基丙烯酸叔丁酯大分子中间体PtBMA-Br。 短句来源 更多          叔丁酯      Synthesis of tert-Butyl 3,5-Dihydroxy-4-methylhexanoate      3,5-二羟基-4-甲基己酸叔丁酯的合成 短句来源      When the mass ratio of styrene and tert-butyl methacrylate is 54∶46,the proportion of corresponding copolymer blocks is about 79∶21.      当苯乙烯与α-甲基丙烯酸叔丁酯投料质量比为54∶46时,所得共聚物相应嵌段质量比为79∶21左右。 短句来源      The optimum reaction conditions are as following: reflux temperature, the molar ratio of anhydride to alcohol is 1.4∶1, reaction time is 2 hours, the mole fraction of copper(Ⅱ) bromide in alcohol is 0.5%, the yield of tert-butyl acetate is 83.46%.      溴化铜催化合成乙酸叔丁酯的优化条件为:回流温度下,酐醇摩尔比为1.4∶1,溴化铜在醇中的摩尔分数为0.5%,反应2h,乙酸叔丁酯收率达83.46%。 短句来源      Macro-intermediate with Br-end Poly(tert-butyl methacrylate)(PtBMA-Br) was synthesized by Atom Transfer Radical Polymerization(ATRP),with ethyl-2-bromopropionate as initiator,a compound system of CuCl/ N,N,N′,N″,N″-penta-methyldiethylenetri-amine(PMDETA) as catalyst.      以α-溴代丙酸乙酯(EPN-Br)为引发剂,氯化亚铜(CuCl)与N,N,N′,N″,N″-五甲基二亚乙基三胺(PMDETA)组成的混合体系为催化剂,使甲基丙烯酸叔丁酯(tBMA)进行原子转移自由基聚合(ATRP),得到了端基为溴原子的聚甲基丙烯酸叔丁酯大分子中间体PtBMA-Br。 短句来源      tert-Butyl 4-methyl-3,5-dihydoxyhexanoate was synthesized from ethyl 2-methyl-3-oxobutanoate via ethyl 2-methyl-3-hydroxylbutanoate and tert-butyl 5-hydroxy-4-methyl-3-oxohexanoate in 38% overall yield.      以 2 -甲基 - 3-羰基丁酸乙酯为原料 ,经 3-羟基 - 2 -甲基丁酸乙酯和 5 -羟基 - 4-甲基 - 3-羰基己酸叔丁酯合成了3,5 -二羟基 - 4-甲基己酸叔丁酯 ,总收率 38%。 短句来源 更多            查询“tert-butyl”译词为其他词的双语例句 叔丁基过氧化氢   查询“tert-butyl”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   tert-butyl Compound 1-benzhydryl-4-(4-tert-butyl-benzenesulfonyl)-piperazine (7d) showed significant inhibitory activity. 例句来源       Peroxidase-catalyzed oxidation of o-phenylene diamine (OPD) was competitively inhibited by trimethylhydroquinone (TMHQ), 4-tert-butylpyrocatechol (InH5), and 4,6-di-tert-butyl-3-sulfanyl-1,2-dihydroxybenzene (InH6). 例句来源       Neurotransmitters dopamine and serotonin as well as active oxygen species hydrogen peroxide and tert-butyl peroxide were used as chemical signals. 例句来源       Radioprotectants of acute (indralin) and durable effects (indomethaphen) as well as natural α2-tocopherol) and synthetic antioxidants (ionol or 2,6-di-tert-butyl-4-methylphenol) efficient in survival test were used. 例句来源       The dynamics of total protein and procollagen biosynthesis was studied in the muscle tissue in gunshot wound during the natural healing and after treatment with antioxidant (AO) 2,6-di-tert-butyl-4-methylphenol (BHT). 例句来源       更多                    A new initiator system, di-tert-butyl peroxide in the presence of MgO or BaO, has been proposed for the telomerization of tetrafluoroethylene with lower aliphatic alcohols. Comparative studies showed that the presence of BaO enhanced the rate of telomerization and increased the total yield of telomers, as well as lowered the average molecular weight of telomers. This effect is decreased in the following order: methanol > ethanol > iso-propyl alcohol.The telomerization was studied over a wide ran...             本工作提出了一种新的引发系统即在MgO或BaO存在下的过氧化叔丁基,应用于四氟乙烯与甲醇、乙醇及异丙醇等低级脂族醇的调节聚合。对比实验证明氧化钡具有提高反应速度和调聚物总收率及降低分子量的作用。此作用对以甲醇为调节剂的反应影响最大,乙醇次之,异丙醇则较小。 研究了四氟乙烯与醇类化合物的克分子比对产物分子量分布的影响。结果表明改变反应物克分子比可以较满意地控制1∶1加成物的生成。以甲醇而言,当反应物克分子比在0.10—0.28范围内,1∶1加成物产率从25.8％增至57％。 从三种醇的调聚产物百分比的比较,得出链转移常数的次序是:甲醇<乙醇<异丙醇。 文摘来源          In view of the effectiveness of bis(3,5-dichloro-2-hydroxyphenyl) sulphide (Bithionol, Ⅱ_b) in the treatment of human paragonimiasis and its protective action against the cercariae of Schistosoma mansoni, a series of analogous compounds was prepared in the present work for pharmacological examinations. 2,2'-Dihydroxy-5,5'-diphenyl sulphide (Ⅱ_a) was chlorinated by means of tert-butyl hypochlorite, or brominated by means of either bromine or N-bromosuccinimide, giving mono- or di-substituted deri...             2,2′-二羟基-5,5′-二氯代二苯硫醚(Ⅱ_a)用次氯酸叔丁酯氯化,两个苯环中仅一个加上一个氯原子,成为三氯化合物(Ⅲ).Ⅱ_a及2,2′-二羟基-5,5′-二溴代二苯硫醚(Ⅴ_a)用N-溴代丁二酰亚胺溴化,两个苯环各加一个溴原子,成为二溴或四溴化合物(Ⅱ_c及Ⅴ_b)。2,2′-二羟基卤代二苯硫醚以乙酐及乙酸钠进行乙酰化,或以苯甲酰氯进行Schotten-Baumann反应,生成相应酯类;与碘甲烷、碘乙烷或2-二乙氨基氯乙烷分别制成相应醚类。动物试验结果2,2′-二羟基-3,3′,5,5′,6,6′-六氯代二苯硫醚(Ⅳ_a)对小白鼠体内的日本血吸虫具有明显的抑制与杀灭作用。2,2′-二羟基-3,3′-二溴代-5,5′-二氯代二苯硫醚(Ⅱ_c)亦有作用,但作用不及Ⅳ_a强。 文摘来源          This paper presents the effect of different initiators and solvents on the anionic polymerization of tert-butyl-vinylketone. An amorphous polymer was obtained with softening point at 140-180° when the title monomer was polymerized with n-butyl lithium as anionic initiator in a homogenous phase with pyridine or tetrahydrofuran as solvent, while that in a heterogenous phase such as benzene, toluene, xylene or n-heptane it would give crystalline and probably isotactic polymer with melting poi...             本文报导了第三丁基乙烯基酮在不同溶剂中应用各种负离子引发剂的聚合研究。以正丁基锂为引发剂,吡啶或四氢呋喃为溶剂时,都是均相聚合,得到无定形聚合物,它们的软化温度为40—180°之间,如果以苯、甲苯、二甲苯或正庚烷为溶剂,则都是非均相聚合,得到结晶性聚合物,有着高达260—280°之间的熔点。上述结晶性与无定形聚第三丁基乙烯基酮的红外光谱有着显著的不同,结晶性聚合物具有特征的吸收峯,以1100厘米~(-1)与1330厘米~(_1)二处最为明显。还研究了不同比例的混合物的红外光谱,当结晶性聚合物含量降至 87％以下时,则 1100厘米~(-1) ,1290厘米~(-1)及 1330厘米~(-1)三处吸收峯逐渐减弱,当减少至13％时则与无定形聚合物的光谱一致。此外金属锂、钠与钾都能引发聚合第三丁基乙烯基酮,也试用了NaH,LiAlH_4,RONa,ROK,RMgX,二苯酮以及二苯酮钠等引发剂进行非均相聚合。 文摘来源   << 更多相关文摘         相关查询: tert- - tert- tert-alkyl tert-butoxide di-tert tert-olefins tert-butylphenyl tert-butylhydroquinone 2-tert tert-octylphenol tert-pentyl tert-pentanol  对查询结果不满意

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