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At the stage of rapid cell expansion of longan fruit, the contents of free putrescine, sperdimine and spermine in aril rose rapidly, and maintained at a high level.

在果实迅速膨大期,假种皮内游离的腐胺、亚精胺、精胺含量迅速上升,并处在较高的水平。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

The process is carried out by taking organic acid and sulfoxide chloride as raw materials, acyl chloride synthesizing, reacting ethylenediamine with sodium chloroacetate to synthesize intermediate sodium EDDA, and reacting it with acyl chloride to synthesize the final product.

所述双子烷基羧酸盐表面活性剂是由以下方法制得的,以有机酸和氯化亚砜为原料首先进行酰氯的合成,再用乙二胺与氯乙酸钠反应合成中间体乙二胺二乙酸钠,将中间体乙二胺二乙酸钠与酰氯反应合成终产物。

Results In the picture of infrared absorption spectrum, we can see characteristic peaks of amide, secondary amide and methene which are basically as same as standard polyacrylamdie atlas.

结果 KBR压片法红外吸收光谱图中有酰胺基、仲酰胺、亚甲基的特征峰与标准聚丙烯酰胺图谱基本相同。

LIN Hailin,CUI Yingde,DU Lin,CHEN JianpingInstitute of Applied Chemistry,Zhongkai University of Agriculture and TechnologySuper water absorbent resins P,SA/NaAA,SA/NaAA/PVA and SA/NaAA/AM were synthesized from sodium alginate,acrylic acid,polyvinyl alcoholand acrylamide,with N,N–methylenebisacrylamide as crosslinking agent,(NH4)2S2O8 - NaHSO3 as initiator,by means of aqueous solution polymerization.

以醚化海藻酸钠、聚乙烯醇、丙烯酰胺、丙烯酸为单体,N, N–亚甲基双丙烯酰胺为交联剂,过硫酸铵-亚硫酸氢钠为引发剂,采用水溶液法制备聚丙烯酸钠p吸水树脂和海藻酸钠/丙烯酸钠、海藻酸钠/丙烯酸钠/聚乙烯醇(SA/NaAA/PVA)及海藻酸钠/丙烯酸钠/丙烯酰胺吸水性复合树脂。

A rapid and sensitive flow-injection spectrophotometric method was proposed for the determination of metoclopramide. This method was based on the diazotisation of metoclopramide with sodium nitrite in acidic medium and coupling with α-naphthylamine.

基于在盐酸介质中,利用甲氧氯普胺一亚硝酸钠-α-萘胺的重氮化-偶合反应,建立了流动注射光度法测定甲氧氯普胺的新方法。

Furthermore, through molecular structural design, we have also synthesized stable dual functional diphenylether polymer intermediates of ABB' types possessing ortho-dicarboxylic at one aromatic ring and diamine groups at another beginning from Xylenol and 1-Chloro-3,4-dinitrobenzene as the raw materials.

中文摘要本研究应用自氧化法与氢化法两反应,成功而有劾地制备出芳香族含酸酐及二胺基之官能基单体,并进一步经由分子结构设计,从3,4-二甲苯酚及1-氯-3,4-二硝基苯为原料,转化合成出安定性高带有羧基与双胺基双官能基之堑新ABB'型二苯醚中间体,并成功地应用此中间体从事自聚合反应,而合成分歧状聚醚亚醯胺高分子。

Experiments showed that the contents of putrescine、spermidineand sperminein normal ovules were higher than those inabortive ones during the whole embryogenetic process.The highest levelswere reached 7 days after anthesis,with Put being the richest of thethree,then they declined.

试验结果表明:正常发育的胚珠中腐胺、亚精胺和精胺的含量在胚胎发育的各个阶段均高于败育胚珠,并在花后7d即达到最高值,其中Put的含量最高,随后都呈下降趋势。

The method to determine the primary amino content in the polymethylene polyphenyl polyamine through the quantitative diazo reaction of primary amino and nitrous acid was researched.

研究了利用伯胺基与亚硝酸定量发生重氮化反应测定多苯基多次甲基多胺中伯胺基含量的方法,确定了最佳测定工艺条件,其分析结果的最大相对误差及相对平均偏差在0。

In the last part we first synthesized the propargylic amines though several methods and then developed a new methodology for the synthesis of -α-chloroalkylidene-β-lactams via the catalysis of PdCl〓 with CuCl〓 and BQ with moderate to good yields and good generality.

论文的第三部分工作是我们首先通过几种方法合成了炔丙基胺化合物,接着对PdCl〓催化的炔丙基胺的羰基插入环化反应进行了研究,以中等收率得到-α-氯代亚烷基-β-内酰胺化合物,反应的普适性良好。

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