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乙二酸

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Water,butylene glycol,biosaccharide gum-1,ppg-26-buteth-26,panthenol,peg-40 hydrogenated caster oil,hydroxyethylcellulose,imidazolidinyl urea,saccharide isomerate,benzophenone-4,phenoxyethanol,triethanolamine,citrus aurantium dulcisoil,pentadecalactone,methylparaben,sodium hyaluronate,citric acid,butylparaben,ethylparaben,citrus aurantium amaraoil,propylparaben,methylchloroisothiazolinone,methylisothiazolinone,red 4,yellow 5,red 33,limonene,linalool

水,丁二醇,多醣物质,PPG-26-丁醇聚醚-26,维生素B5,PEG-40氢化蓖麻油,羟乙基纤维素,尿素醛,天然异构寡糖,二苯甲酮- 4,苯氧乙醇,三乙醇胺,甜橙油,环十五内酯,羟苯甲酯,透明质酸钠,柠檬酸,羟苯丁酯,羟苯乙酯,苦橙油,羟苯丙酯,甲基氯异塞唑晽酮,甲基异噻唑啉酮,红4,黄5,红33,柠檬精油,芳樟醇

In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物,通过2-氨基-5-(3-吡啶基)-1,3,4-噻二唑与酰基叠氮化物反应,设计合成了7个新的N-[5-(3-吡啶基)-1,3,4-噻二唑-2-基]-N'-取代苯基脲,其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

Biological activity of the compounds were studied and the result indicated that the compound 1,1'-ethyl dicarboxylate gem-dimethyl-cyclopropanediacylhydrazine has good activity against bean aphidsin at 250mg/L.

生物活性测定结果表明,在250mg/L的浓度下,化合物1,1'-二羧酸乙酯偕二甲基环丙烷双酰肼对蚕豆蚜虫有较好杀虫活性。

The product includes the licorice frost, licorice paste, licorice acid, Acetyl Glycyrrhetic Acid, Crude Disodium Glycyrrhizininate, Dipotassium Glycyrrhizininate, Monopotassium Glycyrrhizininate, Diammonium GlycyrrhizininateDiammonium Glycyrrhizininate, Monoammonium Glycyrrhizininate etc.

产品有甘草霜、甘草膏、甘草酸、乙酰甘草次酸、甘草酸单铵盐、甘草酸单钾盐、甘草酸二钾盐、甘草酸三钾盐、甘草酸二钠盐、高纯甘草酸等品种。

In order to carry out the separation of the azeotropic mixture dipropyl ether + 1-propyl alcohol by extractive distillation, we are studied the influence on the phase equilibria behavior four different solvent: 1-pentanol [2], butyl propionate [3], N,Ndimethylformamide [4] and 2-ethoxyethanol.

为了用萃取性蒸馏法分离二丙醚和1-丙醇组成的共沸混合物,我们正在研究4种不同溶剂对相平衡行为的影响:1-戊醇[2]、丙酸丁酯[3]、N,N-二甲基甲酰胺[4]和2-乙氧基乙醇。

As can be seen in Fig. 5, dipropyl ether will be recovered in the distillate using 1-pentanol, N,N-dimethylformamide and 2-ethoxyethanol as entrainers and butyl propionate is the only entrainer studied that inverts the volatility of the azeotropic mixture.

从图 5可以看出,使用1-戊醇、N,N-二甲基甲酰胺和2-乙氧基乙醇作为共溶剂时二丙醚将在馏分中回收,丙酸丁酯是唯一与共沸混合物挥发性相反的共溶剂。

Diethyl maleate was synthesized from maleic anhydride and ethyl alcohol in the presence of ammonium ferric sulfate dodecahydrate.

在十二水合硫酸铁铵存在下,由马来酸酐与乙醇合成了马来酸二乙酯,研究了反应的影响因素和催化剂的重复使用性能。

The process comprises the subsequent steps a through e: a reacting phthalic anhydride with fluorobenzene or a derivative thereof in appropriate reaction conditions; b over reducing the product obtained in step a at the ketone moiety; c reducing the product obtained in step b with sodium dihydro-bis (2- 15 methoxyethoxy) aluminate to the corresponding alcohol ; d chlorinat ing the alcohol obtained in step c ; e inserting CO into the product obtained in step d through an appropriate Pd-containing catalytic system.

该方法包括以下步骤a~e:a使邻苯二甲酸酐与氟苯或者其衍生物在适当的反应条件中反应;b完全还原步骤a中获得的产品的酮部分;c用二氢-二(2-甲氧基乙氧基)铝酸钠将步骤b中获得的产品还原成相应的醇;d对步骤c中获得的醇进行氯化;e通过适当的含Pd的催化剂体系,将CO插入到步骤d中获得的产品中。

Results Six compounds were isolated and identified as:5α,8α-epidioxy-(22E,24R)-ergosta-6,22-dien-3β-ol,scopoletin,isofraxidin,p-hydroxy benzaldehyde,3,4,5-trimethoxy benzoic acid,protocatechuic acid ethyl ester...

结果得到6个化合物,分别鉴定为:5α,8α表二氧(22E,24R)麦角甾6,22二烯3β醇、东莨菪素、异秦皮啶、对羟基苯甲醛、3,4,5三甲氧基苯甲酸、原儿茶酸乙酯。结论化合物Ⅰ~Ⅵ均为首次从该属植物中分离得到。

Following resolution, the following steps are performed: reduce the isomer to an alcohol, react the alcohol with triphenylmethyl chloride, ozonalyze the resulting reaction product, reduce the ozonalyzed product to yield a diol and react the diol with a methane sulfonyl compound to form-3-2-{(methylsulfonyloxy}ethoxy-4--1-butanol methane sulfonate.

拆分后,进行下一步:将异构体还原为醇,使醇与三苯基甲基氯反应,臭氧化所得反应产物,还原臭氧化产物以得到一种二醇并使所述二醇与甲烷磺酰基化合物反应以形成-3-2-{(甲基磺酰基氧}乙氧基-4--1-丁醇甲烷磺酸酯。

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