丁二酸的

To authors' knowledge, dimethyl adipate, diisobutyl succinate and benthothiazole have never been reported in previous herbivore insect-plant systems.

己二酸二甲酯、丁二酸二异丁酯、苯骈噻唑在以前的昆虫-草本植物系统中未见报道。

The subcutaneous administration of sodium dimercaptosuccinate at a dose of 1500 mg/kg immediately after the intraperitoneal injection of trivalent antimonyl ammonium gluconate increased the LD_(50) of the latter from 90—112 mg/kg to 1300—1460 mg/kg.

皮下注射二巯基丁二酸钠1500毫克/千克，司将小鼠一次腹腔注射锑铵的半数致死量从90—112毫克/千克提高至1300—1460毫克/千克。静脉注身锑~(124)铵予家兔后，如立刻经同一途径注射二巯基丁二酸钠，亦可降低锑铵的急性毒性。

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。

After esterification, the ethyl-2-chloro-3-phenylpropionate reacts with diethyl malonate under the catalysis of sodium ethylate, and we obtain the corresponding triethyl ester. The-benzylsuccinic acid is formed by the triethyl ester reacting with concentrate hydrochloric acid and taking place hydrolyzation and decarboxylation reaction at the same time. In order to avoid the formation of cinnamic acid, the sodium ethylate and diethyl malonate must be react sufficiently. The course has simple operation, inexpensive materials and better yield.

具体制备工艺为：首先以L-苯丙氨酸为原料采用重氮化方法得到-2-氯-3-苯基丙酸，再经酯化得到-2-氯-3-苯基丙酸乙酯后在乙醇钠催化作用下和丙二酸二乙酯缩合，发生SN2反应，得到相应的三乙酯，然后经水解和脱羧，得到-苄基丁二酸；在实验中乙醇钠要和丙二酸二乙酯充分反应，避免生成肉桂酸乙酯；该过程操作简单，原料便宜，产率较高，总收率可达到26.8%。

The synthesis methods of dibutyl succinate catalyzed by p-toluene sulfonic acid, amino sulfonic acid,strongly acidic cationic exchange resin, ferric chloride hexahydrate, stannic chloride pentahydrate, copper sulfate , ammonium ferric sulfate dodecahydrate, titanium sulfate, sodium bisulfate monohydrate,and solid super acid et al were reviewed.

本文评述了对甲苯磺酸、氨基磺酸、强酸性阳离子交换树脂、六水三氯化铁、五水四氯化锡、十二水合硫酸铁铵、硫酸钛、一水硫酸氢钠和固体超强酸等催化剂催化合成丁二酸二丁酯的方法。

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。

We made use of the solubility differences of three acids in chloroform, n-butanol and water under different temparatures by solvent separation method,then we separated the succinic acid, glutaric acid and adipic acid with high purity from mixed dibasic acids successfully.

由溶剂分离法，利用三种酸在氯仿、正丁醇和水中不同温度下溶解度的差异，成功的从混合二元酸中分离出纯度较高的丁二酸、戊二酸和己二酸。

At the same time, for the alternatives, another set of devices was also set up according to balanced method. From above two experiments, we got solubility datas of succinic acid, glutaric acid and adipic acid in six solvents of water, ethanol, n-butanol,choloroform, acetone and toluene, of which most were measured for the first time.

由合成法和平衡法实验测定了丁二酸、戊二酸和己二酸三种溶质在水、乙醇、正丁醇、氯仿、丙酮、甲苯六种溶剂中的溶解度数据，其中大部分体系和溶解度数据是首次测定。

M treatment materials, and also tartaric acid and no maleic acid detected in G. v treatment materials. Inoculation also increased the content of organic acid secretion (increased by 19.80～56.87 mg/kg) of trifoliate root, and the application of AlPO4 greatly increased organic acid content (increased by 20.06～21.84 mg/kg); uninoculated plant root secreted a bit of organic acid; Mycorrhizal poncirus trifoliata seedlings excreted malic acid (42.87%), citric acid (39.22%) and oxalic acid (12.06%).

接种AM真菌的根系分泌的有机酸种类与对照有所不同，未接种处理枳分泌的有机酸有草酸、苹果酸、乳酸、乙酸、顺丁烯二酸和柠檬酸等6种，而接种G.m的则检测到草酸、酒石酸、苹果酸、乳酸、乙酸、柠檬酸、丁二酸等7种，G.v处理的检测到酒石酸，接种处理均未检测到顺丁烯二酸；接种丛枝菌根真菌增加了枳根系分泌有机酸的量比未接种处理增加19.80～56.87 mg/kg，且施用AlPO4后有机酸含量显著增加(增加20.06～21.84 mg/kg；未接种植株根系仅分泌少量有机酸；接种植株根系分泌的有机酸以苹果酸(42.87%)、柠檬酸(39.22%)和草酸(12.06%)为主。

Dibutyl succinate was synthesized catalyzed by a strong acid cation exchange resin from succinic acid and n-butyl alcohol.

用强酸性阳离子交换树脂催化丁二酸和正丁醇的酯化反应，合成了丁二酸二丁酯。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。