查询词典 patho-amine

The selective linear dimerization of isoprene to formate myrcene in a single phase catalyst solution prepared by mixing two metals, amine, solvent and a small content of isoprene was studied.

摘 要：研究了异戊二烯在两种金属催化作用下均相线性二聚生成月桂烯的影响因素，得到优惠工艺条件：反应温度 13℃，催化剂∶异戊二烯=0 。0 5∶1 0 ，胺∶异戊二烯=0 。0 7∶1.0。

In the same time, the intra-molecular photoinduced electron transfer process between naphthyl group and nitrogen atom of tertiary amine group at the tip of molecule was found and this process strongly depends on the acidity of solution.

通过对该类化合物在溶液中的光物理行为以及酸度影响的比较研究，观察到以叔胺为骨架的三足化合物存在分子内光诱导电子转移，且这一过程强烈地依赖于介质的pH值；叔胺基的氮原子质子化将会减弱这一PET过程。

The aromatic position isomers, such as xylene and nitrotoluene, were separated well. Moreover, some chiral compounds including alcohol, amine, ester etc., were also resolved.

不但对二甲笨、硝甲苯等难分离的芳香族位置异构体，而且对醇、胺、酯等多种类型的手性异构体均有很好的分离能力和手性选择能力。

Relating to an amine or other chemical compound containing an NH2group combined with a nonacid organic radical .

对我们同中国的贸易彻底的重新估价。自由基是一种具有未配对电子的分子碎体。

Relating to an amine or other chemical compound containing an NH2group combined with a nonacid organic radical.

它还会同氧反应生成氮的氧化物，而且当在有催化剂存在时它会同氢反应生成氨。

Our calculations suggest that this class of non-classical transplatin analogues with one nonplanar heterocyclic amine decreases the equatorial steric effect and the hydrolysis reaction barriers.

计算表明，这些含有非平面杂环胺反铂的配合物减小了赤道面上的立体效应和水解势垒。

With the addition of octadecyl amine, the pore sizes and thespecific surface area of the samples are increased evidently.

添加十八铵与CTAB共同作用，可以使产物的孔径和比表面积有明显增加。

Octylene was synthesized via tetramerization of ethylene at the presence of a catalyst system consisted of chromium acaet as primary catalyst, methylaluminoxane as cocatalyst, bis amine as ligand under high pressure. The effects of different PNP ligands on catalyst activity and selectivity to 1-octene were investigated.

在乙酰丙酮铬、甲基铝氧烷、配体三元催化体系中，以乙烯为原料在高压下齐聚生成1-辛烯，主要考察N原子上取代基不同的PNP配体对催化剂活性及1-辛烯选择性的影响。

For very long time, many research groups focus on using more than a stoichiometric amount of a chiral auxiliaries to obtain high enantioselectivity. There were mainly two sorts of processes reported on highly catalytic asymmetric addition of Grignard reagents to aldehydes. The former case was to transform Grignard reagent RMgX into other organometal reagents such as R_2Zn and R-Ti derivatives via complicated procedures at extremely low temperature. The later case was to link a chiral ligand to Mg in the form of organomagnesium amides or use chiral amine ligand catalyzing the alkylation of aldehydes.

格氏试剂对醛的不对称加成的报道大多需要大量的手性助剂以获得高的光学活性，而高度催化的格氏试剂对醛的不对称加成主要通过两种途径进行：一种是把格氏试剂转化成其他的有机金属试剂如R_2Zn和R-Ti化合物再对醛进行加成，反应通常在低温下进行；另一种是利用手性镁胺作为中间体或直接用手性胺催化来完成此反应。

Products have good thermal stability anddecomposition temperature above 200℃; Selected lauryl amine as a case, then optimizedthe synthesis conditions by orthometric trial, and obtained the best synthesis technichs: themolar ratio of 1: 2.1, the reaction temperature was controlled at 80℃and the reaction timeof 16 h, reaction to the solvent n-propanol.

并对其热稳定性进行了分析，合成产物具有较好的热稳定性，分解温度都在200℃以上；以十二胺为例，用正交实验法优化合成条件，获得最佳合成工艺为：摩尔配比为1：2.1，反应温度控制在80℃，反应时间为16h，反应所用的溶剂为正丙醇。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。