查询词典 diiodide

In chapter one, at first, we simply outlined some reactions promoted by samarium diiodide in recent years.

第一章，首先我们综述了近几年来二碘化钐促进的有机反应在有机合成中的应用。

The first one is focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis.

二碘化钐促进的有机反应在有机合成中的应用；2。

The first one is focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis.

第一章，首先我们综述了近几年来二碘化钐促进的有机反应在有机合成中的应用。

Although the ion-exchange capacity of membrane quaternized by methyl iodide is higher than that of membrane quaternized by methylene diiodide,mechanical properties of the former are too poor to form membranes.

以一碘甲烷为季铵化试剂制备的离子交换膜其离子交换当量要比以二碘甲烷为季铵化试剂的要高，但机械强度差。在相同条件下，提高反应温度，有利于膜的季铵化反应，而不利于膜的磺化反应。

Nitroarenes can be reduced by samarium diiodide to afford a nitrogen anion,which is a living species and can be acylated by relatively weaker acylating ester agents.

二碘化钐(SmI2)在四氢呋喃溶剂中还原硝基化合物，可以生成氮负离子中间体，该中间体具有较高的反应活性。

We succeeded in synthesizing two different segments: C〓-C〓 and C〓-C〓, employing Sharpless dihydroxylation reaction, Julia coupling and samarium diiodide mediated reaction as the key steps.

我们从单保护的1，3-丙二醇出发，以Sharpless不对称双羟化反应，Julia偶联反应以及SmI〓参与的反应为关键步骤，经过艰苦的多条合成路线的尝试与探索，成功的得到了Phorboxazole A B的两个不同的边链部分C〓-C〓和C〓-C〓。

And then the intermolecular reductive cyclization reaction of N,N-diethyl-o-nitrobenzenesulfonamide with nitriles promoted by samarium diiodide was studied. 2H-1,2,4-Benzothiadiazine 1,1-Dioxides were prepared in good yields under mild and neutral conditions.

然后研究了二碘化钐促进的邻硝基N，N-二乙基苯磺酰胺与腈发生的分子间交叉还原偶联反应，一步合成了2H-1，2，4-苯并噻二嗪-1，1-二氧化物。

But only one diquaternary compound whose spacer group was -(CH2)2O(CH2)2-, N,N"-dimethyl-N,N,N",N-tetradodecyl-3-oxa- pentane diammonium diiodide, was obtained under the same reaction conditions, because of the effect of spacer.

但由于间隔链中氧原子的影响，使得用相同方法合成和后处理不同疏水链的间隔链为-(CH2)2O(CH2)2-双子型季铵盐所得结果不一样。

Single-component samarium diiodide catalyst system was first used with polymerization of acrylonitrile. Adding of hexamethylphosphoramide could greatly improve reaction activity of the catalyst system. AN/Sm12 and l{IVIPA1 Sm12 molar ratios, reaction time and temperature were mainly investigated with yields and molecular weights of resultant PAN.

研究发现HMPA的加入可以极大地提高催化活性；考察了单体与催化剂(SmI2)的摩尔比例、第二组分与催化剂(SmI2)的摩尔比例、反应温度、反应时间等因素对相应聚合物的产率和分子量的影响，通过对聚合物的红外和核磁的分析，提出了&单电子转移-双阴离子引发&机理。

Treatment of dials with N-tert-butanesulfinamide, all biaryl dials were successfully converted into the corresponding bis-imines which were then treated with samarium diiodide to afford diamine products. The absolute configurations of all the intramolecular coupling products were determined by X-ray crystallography.

轴手性二醛与N-叔丁基亚磺酰胺缩合得到相应的亚胺，其为一对非对映异构体。N-叔丁基亚磺酰亚胺在二碘化钐条件下得到的偶联产物，经X-衍射也确定了其立体构型。

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。