丁二酰

Finasteride has been facilely synthesized from 4-androstene-3, 17-dione by oxidation, ammoniumation, cyanohydrin, dehydration, Ritter reaction, hydrogenation and dehydrogenation.

本文参考有关文献，以雄烯二酮为起始原料，经氧化开环、内酰胺化、氰醇化、Ritter反应引入叔丁基酰胺、氢化还原、最后氧化脱氢制得非那雄胺。

The company is the biggest professional manufacturer about succinic acid series in China,the main product are succinic acid,succinic anhydride,ethyl succinyl chloride,the products are fine and advanced technicsis used manufacturing.

简介： 公司是国内最大的丁二酸系列产品的专业生产企业，重点产品：丁二酸、丁二酸酐、丁二酸单乙酯酰氯，产品质量上乘，多种工艺提供不同厂家的需要。

Methods The propylbridged biferrocenyl substituted pyridazinone was synthesized by the reaction of propylbridged biferrocene with ethyl succinyl chloride, and then condensed with hydrazine hydrate.

双二茂铁丙烷先与丁二酸单乙酯酰氯发生酰化反应，生成的1，4酮酸酯再与水合肼缩合得到含有双二茂铁丙烷的哒嗪酮衍生物。

The surface hydroxyl group onto magnetic polyvinyl acetate nanoparticles can be obtained by saponification reaction on their surface.

结果表明，磁性聚苯乙烯颗粒与丁二酸酐发生Freidel-Crafts酰基化反应，可以在颗粒表面引入少量羧基；磁性聚甲基丙烯酸甲酯颗粒分别与乙二醇、二缩三乙二醇、聚乙二醇等发生醇-酯交换反应，可以在颗粒表面接枝不同分子链长度的末端羟基；磁性聚醋酸乙烯酯颗粒经过醇解或皂化反应可以获得表面羟基；磁性聚丙烯酸甲酯颗粒通过乙二胺或1，6己二胺的胺解反应可以得到表面氨基，继而与一氯乙酸反应可以引入亚胺二乙酸基团。

Purified water, euphorbia cerifera wax, glyceryl stearate, ammonium acrylates copolymer, butylene glycol, copernica cerifera wax, stearic acid, sucrose acetate isobutyrate, acrylates copolymer, bentonite, tromethamine, hexylene glycol, silk amino acids, cholesterol, glycine, synthetic wax, ethylhexyl glycerin, alanine, PEG-9 dimethicone, nylon-6, lecithin, silica, simethicone, caprylyl glycol, xanthan gum, propylene glycol, isostearic acid, sodium laureth-12 slfate, ceteareth-20, polyvinyl alcohol, sodium chloride, sodium acetate, disodium EDTA, benzyl alcohol, chlorphenesin, phenoxyethanol, methylparaben, ethylparaben, propylparaben, butylparaben, isobutylparaben, may contain /- mica, iron oxides (CI 77491, CI 77492, CI 77499), titanium dioxide (CI 77891), ferric ferrocyanide (CI 77150), ultramarines (CI 77007), blue 1 lake (CI 42090), bronze powder (CI 77400), aluminum powder (CI 77000), bismuth oxychloride (CI 77163), carmine (CI 75740), chromium hydroxide green (CI 77289), chromium oxide greens (CI 77288), yellow 5 lake CI 19140

水，小烛树蜡，硬脂酸甘油酯，丙烯酸铵共聚物，1，3-丁二醇，巴西棕榈蜡，硬脂酸，异丁酸醋酸蔗糖酯，丙烯酸酯共聚物，蒙脱土，二吡喃乙酸乙酯胺，已烯醇，丝氨酸，胆固醇，甘油，合成蜡，异丁基甘油，丙胺酸，PEG-9二甲基硅油，尼龙-6，卵磷酯，硅粉，硅氧烷，癸酰基乙二醇，汉生胶，丙二醇，异硬脂酸，月桂基醚-12硫酸钠，十六十八醇醚-20，聚乙烯醇，氯化钠，醋酸钠，EDTA二钠，苯氧乙醇，氯代苯酚，卞醇，尼泊金甲酯，尼泊金乙酯，尼泊金丙酯，尼泊金丁酯，尼泊金异丁酯，[可能还含有云母，铁黑(CI 77491， CI 77492， CI 77499)，钛白粉(CI 77891)，氰化亚铁(CI 77150)，靛蓝(CI 77007)，蓝1号(CI 42090)，青铜粉(CI 77400)，铝粉(CI 77000)，氯氧化铋(CI 77163)，洋红色素(CI 75740)，氢氧化铬绿(CI 77289)，氧化铬绿(CI 77288)，黄5号(CI 19140)]文章来自网络，不代表本网站立场，版权归原作者所有，转载请注明出处！

Applied dodecencylsuccinic acid and diethanolamine as raw materials,dodecencylsuccinic acid diethanolamide was prepared.

以十二烯基丁二酸(T746)和二乙醇胺为原料合成了十二烯基丁二酸二乙醇酰胺防锈剂，探讨了原料质量配比、反应温度、反应时间等对产品性质的影响。

In the forth part, the heterotactic enthalpic pairwise interaction coefficients between five amides and butanediol isomers (1,3-butanediol, 1,4-butanediol and 2,3-butanediol) at 310.15K are discussed. The change of temperature made remarkable effects on the values of h_.

第四部分：经测定得到了五种酰胺与丁二醇的三种异构体在298.15K(25℃)时的各级异系焓相互作用系数，并进行了分析比较，讨论了五种乙酰胺分子与三种丁二醇分子的相互作用机制。

In this paper,the monomers including St and BA with strong waterproof property were employed to modify the traditional PVAc emulsion,and meanwhile draw into DAAM functional monomer in the copolymer system,will prepare out cross linking copolymer emulsion for ADH to improve the waterproof,oilproof and dry/wet mechanical property of fuel oil filter paper.

采用具有较强抗水性的苯乙烯、丙烯酸丁酯等单体对传统聚醋酸乙烯酯乳液进行共聚改性，并在共聚体系中引入双丙酮丙烯酰胺功能单体，制备出可通过外加己二酸二酰肼交联的外交联醋丙共聚乳液，以期提高燃油滤纸的耐水、耐油性和干湿态的力学性能。

Pyridazine was prepared by hydrogenolysis of 3,6-dichloro pyridazine obtained via chlorination of 3,6- pyridazine diol with phosphorus oxychloride.

以顺丁烯二酸酐与盐酸肼为原料经缩合成环反应生成顺丁烯二酰肼，再用三氯氧磷氯化合成3，6-二氯哒嗪，最后经催化加氢制得标题化合物哒嗪。

A micro-monolithic column was prepared by in-situ free radical polymerization of stearyl methacrylate with ethylene glycol dimethacrylate in the presence of the initiator AIBN and a mixture of porogens including iso-amyl alcohol and 1,4-butanediol.

以甲基丙烯酸碳酰十八酯为单体，乙叉二甲基丙烯酸酯为交联剂，异戊醇和1，4-丁二醇为二元致孔剂，偶氮二异丁腈为引发剂，原位制备了具有强疏水性的SMA整体微柱，并利用此整体微柱在普通高效液相色谱仪上测定滴眼液中氧氟沙星的含量。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。