胺化产物

Dialkylmethylamine was produced through the reaction of fatty alcohol with methylamine as one of the products of dimethylamine disproportionation.

通过对月桂醇和二甲胺进行胺化反应过程中气相成份的分析，证实了在脂肪醇和二甲胺胺化反应体系中存在二甲胺歧化为甲胺和三甲胺的反应，二甲胺歧化反应生成的甲胺和脂肪醇进行反应是副产物双长链烷基甲基叔胺生成的主要原因。

The disproportionation of dimethylamine to methylamine and trimethylamine was confirmed by the analysis of the gasous phase during the amination test.

脂肪醇和二甲胺催化胺化中的主要副产物为双长链烷基甲基叔胺。

The synthetic progress of polysuccinimide using maleic acid as original material was studied by two steps of aminization and polymerization. Changes of reactant and product composition in aminization reaction step was studied by using bromine value analysis method. It was found that amine salt and amide were main products in this step.

对以马来酐为原料合成聚琥珀酰亚胺的两个反应过程进行了研究，通过溴价测定法研究了胺化反应阶段反应物及产物各组分的变化情况，确定胺化反应阶段的产物组分主要是胺盐和酰胺。

IR analysis indicated that both of the results were accorded with their standards IR spectrum and that the products of alkylation and animation were polyisobutylene succinic anhydride and ashless dispersant TEPA.

通过烃化产物和胺化产物的红外光谱分析，并分别与其标准谱图对照比较，看出产物红外谱图与标准谱图相符，可以确认烃化产物和胺化产物即为聚异丁烯丁二酸酐和聚异丁烯丁二酰亚胺无灰分散剂。

A sample-pretreated method of ether-extraction-precolumn-derivation was established, and the chromatographic conditions, which was used for determinating the derivant of extracted UDCA, were decided to be Hypersil C_(18) column(250×4.6mm, 10μm), acetonitrile-methol-0.005mol·L~(-1) phosphoric buffer-triethylamine(50:27:42:0.25, adjusted to pH3.0±0.1 by phosphoric acid) as mobile phase with detective UV wavelength at 247nm and column temperature at 35℃.

建立了乙醚提取-柱前衍生化血浆样品预处理方法，采用Hypersil C_(18)柱(250×4.6mm，10μm)，乙腈-甲醇-0.005mol·L~(-1)NaH_2PO_4缓冲液-三乙胺(50：27：42：0.25，磷酸调节pH3.0±0.1)为流动相的HPLC法，以溴苯乙酮为衍生化试剂，在247nm处测定家兔血浆中熊去氧胆酸衍生化产物。

First, the preparation of the aminom ethylation of tannin using its electrophilic reaction activity of C-6, C-8 in ring-A; then process the quaternization base on the aminom ethylation; last, progress the sulfonation by use of the activity of phenolic hydroxyl hi ring-B.

首先利用单宁A环的C—6、C—8的亲电反应活性制备单宁胺甲基化产物；然后在胺甲基化的基础上进行季胺盐化；最后利用单宁B环的酚羟基的活性进行磺化。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

However,they are generally insoluble and infusible in their fully imidized form,which would lead to processing difficulties;and this process of polyintermediate has several inherent problems such as emission of volatile byproducts(e.g.,H_2O)and storage instability etc.

然而，完全亚胺化的芳香族聚酰亚胺通常不溶不熔，难于加工，而采用聚酰胺酸中间体加工时，又存在储存稳定性差，加工过程中会产生可挥发小分子副产物(如；H_2O)等问题。

In chapter 4, we have described an improved method for the preparation of ethynylferrocene. Ethynylferrocene was prepared in satisfactory yield by reaction of formylferrocene with triphenylphosphine and carbon tetrachloride followed by dehydrohalogenation in the presence of n-BuLi.

第三章中，我们研究了钯催化下碘杂环化合物的羰基化—酰胺化反应、羰基化—酯化反应和与末端炔烃的羰基化交叉偶联反应，为一步合成多官能团化合物开辟了新的途径，同时，得到的这些产物经过进一步官能团转化后，可以成为一些天然产物合成中的重要中间体化合物。

Based on the-references on the thermal imidization of polyand the polymer composition analysis,the thermal imidization mechanism of SMA with aniline was demonstrated to be a two-stage consecutive reaction,in which a second-order reversible ring-opening reaction of SMA to produce poly(styrene-co-N-phenyl-maleamic acid)and a first-order irreversible intrachain ring-closing reaction to form SNPMI were involved.

论文首先参考聚酰胺酸热环化反应，并通过SMA酰亚胺化产物的组成分析，确定了SMA与苯胺的热酰亚胺化反应机理为一个包含由SMA生成苯乙烯—N-苯基马来酰胺酸共聚物的二级可逆开环反应以及由SNPMA生成苯乙烯—N-苯基马来酰亚胺共聚物的一级不可逆分子内闭环反应在内的串联反应过程，其中第二步SNPMA闭环反应为控制步骤。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。