戊胺

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

Two compounds were synthesized with two methods. The two compounds can be synthesized by two steps with triethylamine as catalyst.

分别用氢氧化钠、三乙胺为缚酸剂，3-氨基-2-丁醇、2-氨基-3-戊醇、环己酮和二氯乙酰氯为原料，采用一步法和分步法合成了两种潜在除草剂安全剂。

The deposition thickness of allylamine was increased with the treating time. The surface textures were changed following different procedures except allylamine groups and it means that the 30 min deposition thickness of allylamine is too thin to change the surface contours.

SEM-EDS的结果显示在未经任何处理及经氩气电浆清洁后的钛金属表面，侦测到主要为钛元素，丙烯胺电浆处理后，即可测到氮元素；戊二醛作用后表面有氧元素的出现；白蛋白处理后即可测得碳及氧元素。

Synthesis and liquid crystalline behavior of three recently reported mesogenic block-molecules, namely polyhydroxy 1-benzoylaminopropane-2,3-diols I、star-shaped pentaerythritol tetrabenzoates II and calamitic bolaamphiphiles with lateral chains III which are constituted of anisometric block, amphiphilic block and alkyl or perfluorinated chains with different topologies are reviewed in this article.

本文对近来报道的三类嵌段液晶分子：多羟基1－苯甲酰胺－2，3－丙二醇两亲性分子I，星状季戊四醇苯甲酸酯II及带侧链的波拉化合物III的合成及自组装行为作了综述。

It was found that the reactions of C_(60) with anthranilic acids and isoamyl nitrite in the presence of triethylamine unexpectedly afforded C_(60)-fusedδ-lactones,which would be difficult to be prepared by other known methods.

通过在三乙胺作用下，富勒烯与邻氨基苯甲酸类化合物和亚硝酸异戊酯的环化反应，首次合成了一系列富勒烯并六元环内酯。

Methods The target compounds were synthesized by Stock enamine reaction,Williamson reaction,Mannich reaction,and arylamine exchange reaction with cyclopentanone as starting material,and their antitumor activities were assayed using human hepatic carcinoma cell line(Bel-7402),human oral cavity epidermis squamocellular carcinoma cell l...

方法以环戊酮为原料，经Stock反应、Williamson反应、Mannich反应和芳胺交换反应合成目标化合物。

Among the organophosphorus flame retardants, caged bicyclic phosphates have been in greatfavor, and many investigations have been done about them. It is found that caged bicyclicphosphates and their derivatives can serve as effective flame retardants to some polymers.

以季戊四醇为基的双环笼状磷酸酯及其衍生物兼具丰富的碳源和酸源，与三聚氰胺等配合使用可发挥良好的膨胀阻燃作用，因此它们的合成和应用倍受研究者的关注。

This experiment with dilute alkali swelling on collagen extraction and separation, then purified by gel from collagen, and then glutaraldehyde, carbodiimide, has three types of di-isocyanate cross-linking agent on the plastic recombinant protein molecules cross-linked, the final test of infrared spectroscopy analysis of the results of their cross-linking to determine the extent of the effectiveness of cross-linking cross-linking agent to have an initial understanding.

本实验用稀碱溶胀法对胶原蛋白进行提取与分离，接下来用凝胶层析纯化所得胶原蛋白，然后用戊二醛、碳化二亚胺、己二异氰酸酯三种交联剂对胶原蛋白分子进行重组交联，最后通过对红外光谱测试结果的分析，对其交联程度进行判断，对交联剂的交联功效有一个初步的了解。，谢谢。

First of all, acrylamide, pentaerythrite and ammonium ceric nitrate were mixed by some concentration in an aqueous solution.

首先将丙烯酰胺、季戊四醇和硝酸铈铵分别配制成一定浓度的水溶液。

The fluorinated polyamides could be dissolved in strong aprotic solvents and some low boiling point solvents, such as cyclopentanone, to form homogenously solution with solid content higher than 20%.

这一系列聚酰胺材料在极性溶剂或低沸点溶剂如环戊酮中都具有较好的溶解性，可以获得固含量高达20％以上的均相溶液，并在较的低温下固化成膜。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。