羟基化反应

These materials were effective catalysts in the hydroxylation of benzene with H2O2 under room temperature.

所合成材料室温下在苯的过氧化氢直接羟基化反应中表现出良好的催化性能。

The material exhibited a good catalytic activity in the reaction of benzene hydroxylation.

所合成的材料在苯的羟基化反应中表现出良好的催化活性。

The catalysis behavior of Fe-MCM-48 and V-MCM-48 for the hydroxylation of benzene were studied.

并初步研究了Fe-MCM-48和V-MCM-48对苯的羟基化反应的催化活性。

A series of Ni-based catalysts with different supports were prepared by impregnation method and tested in the hydroxylation of benzene to phenol.

本文利用浸渍法制备了一系列不同载体的镍基催化剂，并将其用于苯的羟基化反应。

In chapter 3, Fe-EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability was studied.

第三章利用Fe-EDTA引发对苯二甲酸芳环羟基化反应建立了一种评价抗氧化剂清除·OH能力的新型荧光分析法。

The state of Cu species determine the catalytic performance in hydroxylation of benzene.

从XRD、UV-vis和H_2-TPR表征结果可见，催化剂制备中的焙烧温度、Cu的负载量和ZSM-5的硅铝比可以改变Cu物种与载体的相互作用强弱及Cu物种的分散状态，是影响催化剂苯羟基化反应性能的重要因素。

Meanwhile, when the supported ionic liquid is used in asymmetric dihydroxylation reaction, there was no catalystic activity of osmium catalyst.

离子液体固载于改性后BMMs在不对称双羟基化反应中由于分子筛改性引入的氨基与锇催化剂的配位作用使其失去活性。

Synthesis of target compounds namely: to vanillic acid as the starting material with methanol under reflux conditions for 4 - hydroxy -3 - p-methyl, then ether, and nitration, reduction, cyclization reaction 6 - methoxy -7 - benzyloxy-quinazoline -4 - one, and then by the chloride in place of aniline, benzyloxy-off, such as etherification reaction of the target compounds; target compounds with the second and third occurrence of substitution reactions of amines by the TM1, that is, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(N, N-diethyl amino) oxy c] quinazoline; with ether occurred Ornidazole reaction of TM2, namely, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(2 - methyl -5 - nitroimidazole) C oxy] quinazoline.

本论文以嘌呤类似物喹唑啉为母核，分别在其4位和7位引入结构多样的取代苯氨基和柔性侧链，设计了一系列4-取代苯胺基-6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉类化合物。目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

6β-santonin could be selectively reduced and hydroxylated by the cell suspension cultures of P.acinosa, which would provide valuable intermediates for its further structural modification.

结论利用商陆培养细胞可对6β-santonin进行选择性还原及羟基化反应，可为其进一步化学结构改造提供有价值的中间体。

The osmium-catalyzed asymmetric dihydroxylation of olefins provides one of the most effective methods for the preparation of vicinal diols. Almost all kinds of olefinic substrates can be transformed to the corresponding diols by means of AD reaction. The chiral osmium catalyst is generated in situ by the chiral ligand complexing with OsO〓 in the reaction.

手性锇催化剂催化的烯烃不对称二羟基化反应是合成手性邻二醇最有效的途径之一，可以将几乎所有类型的烯烃转变成相应的手性邻二醇，因此广泛地应用于药物、天然产物以及精细化工产品的合成。

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。

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。