二乙胺

It was obtained with ethylenediamine and ethenesulfonic sodium as primary material through addition.

它是一种易降解的新型Gemini表面活性剂－N， N'-双癸酰基乙二胺二乙磺酸钠的中间体。

By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐为起始原料，经酰基化、关环和磺化三步反应合成了3-十二烷基蒽醌磺酸；并进一步改进和优化了合成工艺条件：即在催化剂三氯化铝过量50%并有三乙胺存在的条件下，中间体2-（4-十二烷基苯甲酰基）苯甲酸收率为72.45%；关环反应采用氯仿作溶剂，利用类似分水器的装置有效控制反应温度以减少碳化，2-十二烷基蒽醌的收率为68.1%。

To synthesize the octreotide, Phe-Leu-Glu-Glu-Leu and C_(15)H_(31)-CO-Lys-Thr -Thr-Lys-Ser peptides, the strategies are as followings: Fmoc- group as protective group for α-NH_2; TBTU, DIEA and HOBt as coupling reagent; and ethanedithiol -phenol - thioanisole - H_2O - TFA ( 2.5:5:5:5:82.5 , V/V ) as cleaving solution.

采用Fmoc固相合成法，以苯并三哗四甲基脲四氟硼酸盐、二异丙基乙胺和1-羟基苯骈三氮唑为缩合剂；苯酚—乙二硫醇—苯甲硫醚—水—三氟乙酸(5：5：2.5：5：82.5，V/V)为切割试剂，合成了奥曲肽、Phe-Leu-Glu-Glu-Leu及C_(15)H_(31)-CO-Lys-Thr-Thr-Lys-Ser三种小分子多肽，并对奥曲肽的合成规模进行了放大。

The details and results are summarized below:(1)An ABC style three component cascade reaction of aromatic aldehydes, aromatic amines and diethyl malonic ester or cyclohexanone has been developed.

论文从苯炔和亚胺出发，设计并系统研究了4种新的多组分串联反应，主要内容和结果如下：(1)发展了一种芳醛、芳胺和丙二酸二乙酯或环己酮的ABC型三组分串联反应。

The chromatographic conditions were as followed: C8 column, 0.045 mol/L ammonium phosphate monobasic solution∶acetonitrile (2∶1)(adjusted to pH7.35 with triethylamine) as mobile phase, temperature: 40℃, the flow rate: 1.0 ml/min, detection wavelength: 210nm.

采用C8柱，以0.045mol/L磷酸二氢胺溶液∶乙腈(2∶1)(用三乙胺调pH至7.35)为流动相，流速1ml/min，检测波长210nm，柱温40℃。

The chromatographic conditions were as followed: C8 column, 0.045 mol/L ammonium phosphate monobasic solution∶acetonitrile (2∶1)(adjusted to pH7.35 with triethylamine) as mobile phase, temperature: 40℃, the flow rate: 1.0 ml/min, detection wavelength: 210nm.

采用C8柱，以0.045mol/L磷酸二氢胺溶液∶乙腈(2∶1)(用三乙胺调pH至7.35)为流动相，流速1ml/min，检测波长210nm，柱温40℃。结果阿奇霉素的线性范围为50.3～1006μg/ml，平均回收率100.1%，r=1.0000，RSD=0.8%(n=9)。

The chromatographic conditions were as followed: C8 column, 0.045 mol/L ammonium phosphate monobasic solution∶acetonitrile (2∶1)(adjusted to pH7.35 with triethylamine) as mobile phase, temperature: 40℃, the flow rate: 1.0 ml/min, detection wavelength: 210nm.

采用C8柱，以0.045mol/L磷酸二氢胺溶液∶乙腈(2∶1)(用三乙胺调pH至7.35)为流动相，流速1ml/min，检测波长210nm，柱温40℃。结果阿奇霉素的线范围为50.3～1006μg/ml，平均回收率100.1%，r=1.0000，RSD=0.8%(n=9)。

The title compounds were synthesized by the reaction of symmetric N , N '-diarylthioureas with hexylamine in the presence of triethyl amine,and the intermediate N , N '-diarylthioureas were formed by the direct reaction of carbon disulfide and arylamines.

首先采用二硫化碳与胺直接反应得到对称的N， N'-二芳基硫脲，然后在三乙胺存在下与环己胺反应得到1-环己基-3-芳基硫脲。产物结构经核磁共振和质谱分析确证

Cellulose benzoate,the degree of substitution of which was calculated from the content of C determined by element analysis,was prepared from microcrystalline celluloseand benzoyl chloride under heterogeneous condition and characterized by FT-IR and~1H-NMR.

研究了微晶纤维素和苯甲酰氯在多相条件下合成制备纤维素苯甲酸酯的反应，通过元素分析所得碳的质量百分含量计算了产物的取代度，并系统研究了吡啶与N，N-二甲基乙酰胺或与三乙胺混合反应溶剂、苯甲酰氯与纤维素羟基的摩尔比r、反应温度和反应时间对D S的影响，用FT-IR和1H-NM R对产物进行了表征。

A new type of polyaspartic esters secondary amine called PAE-b was prepared from prime amine 4,4'-methylenebis and dialkyl maleates via a Michael Addition Reaction.

通过伯胺4，4'-二氨基环己基甲烷与马来酸二乙酯的Michael加成反应，合成1种新型聚天门冬氨酸酯仲胺。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。