氧化合物

A series of 3,5-disubstituted chiral hydantoins were prepared from D-amino acid and phenyl isocyanate in mixed solvent, and the catalyst was then supported on macroporous adsorption resins.

摘 要：以混合溶剂法由D 氨基酸和异氰酸酯制备一系列3，5 二取代手性海因，用大孔吸附树脂作载体，制成固载型手性催化剂，并考察了不同结构手性海因化合物在3 苯氧基苯甲醛氰醇化反应中的催化活性。

Three phosphorus-containing polybibenzimidazoles, namely, poly [2,2'-di-p-phenylene methyl phosphine oxide-5,5'-bibenzimidazole], have been prepared by condensing 3,3'-diaminobenzidine with di-(p-carboxy phenyl) methyl phosphine oxide.

用双烷基氧膦与3，3'-二氨基联苯胺缩聚，合成了三个在主链上带有联苯并咪唑和氧化三烃基膦结构的高分子化合物。

A reactive phosphorus-containing compound, bis-phenoxy (3-hydroxy) phenyl phosphine oxide was successfully synthesized to produce the phosphorus-containing flame retardant epoxy resin.

合成了一种含磷二羟基化合物双(3-羟基-苯氧基)苯基磷氧化物，并在此基础上合成了含磷环氧树脂BHPPO-EP。

It has been proved that surface confined quinones can greatly impove the electrocatalytic activity for ORR.

醌类化合物修饰电极具有的明显的电催化氧还原活性，引起了电化学工作者的广泛研究。

The inhibition effect of 2,2,6,6-tetramethyl-4-hydroxylpiperidine-oxyl and some phenols and quinones on the AIBN initiated radical polymerization of styrene was studied by using dilatomitry method.

用膨胀计法，研究了2，2，6，6-四甲基-4-羟基哌啶氧自由基及一些醌、酚类化合物对偶氮二异丁腈引发的苯乙烯自由基聚合的阻聚效应。结果表明，当 St在80℃聚合时，加入TMHPO·或TMHPO·-BQ，阻聚效果较为显著。

Using free radical 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl as catalyst, the phase transfer catalyzed method of oxidation of anilines to 15 symmetrical azobenzenes with a saturated solution of potassium ferricyanide in 2N aqueous potassium hydroxide and dichloromethane was described for the first time.

用2，2，6，6-四甲基-4-羟基-1-哌啶氮氧自由基为催化剂，芳胺类化合物在饱和铁氰化钾的氢氧化钾溶液和二氯甲烷的两相转移催化下合成了15 个对称取代偶氮苯。

Among the metal oxides, molybdenum phosphates are of great importance.

在金属氧簇化合物中，磷钼酸盐是一类极其重要的物质。

An important intermidiate 2-butyl-4-chloro-5-(4-bromomethyl phenoxy) pyridazinone 3 was first obtained from 4,5-dichloropyridazinone using two different methods. Compounds 4a～4l were synthesized by the reaction of 3 with different oximes.

从2-叔丁基-4，5-二氯哒嗪酮出发，以两种方法合成了中间体2-叔丁基-4-氯-5-(4-溴甲基苯氧)哒嗪酮(3)。3与肟反应合成了含哒嗪酮的苄基肟醚类化合物4a～4l。

Laccase (benzenediol: oxygen oxidoreductase: EC 1.10.3.2) is a type of multi copper-containing polyphenol oxidases capable of oxidizing a wide range of polyphenols and other lignin-derived aromatic compounds, and the enzyme is involved in lignin degradation and in the development of soil humus.

漆酶(EC 1.10.3.2，对苯二酚：氧氧化还原酶)是一种含多个铜原子的多酚氧化酶，催化氧化多种芳香族化合物，在木质素矿化降解、腐殖质形成等过程中发挥重要作用。

The novel molecular topological index was recommendedrelating to such atomic properties as electronegativity,electron number of valence shell,number of bonding electrons,the main quantum number of valence shell and bond length.

采用该拓扑指数对饱和烷烃、烷基苯、烷氧氯硅烷、卤代苯、含氮杂环化合物、碱金属卤化物及卤化锡的性质/活性进行了相关关系的研究。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！