二酸的

Six novel dihydrobenzofuran and benzofuran neolignans compounds(1～6) were synthesized by knoevenagel reactiton,esterfication, biomimetic oxidative coupling ,DDQ dehydrogenation,reduction and hydrolysis with 4-hydroxybenzaldehyde and malonic acid as starting material.

以对羟基苯甲醛和丙二酸为原料，经Knoevenagel缩合反应，酯化、仿生氧化偶联、DDQ脱氢、还原和水解等反应步骤，合成了6种未见文献报道的苯并二氢呋喃新木脂素和苯并呋喃新木脂素类化合物(1~6)。

These are converted by a series of chemical steps into hexamethylene diamine and adipic acid.

通过一系列的化学过程将这些物质转化成己二胺和已二酸。

The intermediate of flazasulfuron weedicide ,2-amino-4,6-dimethoxypyrimidineis conveniently obtained by treating 2-amino-4,6-dihydroxypyrimidinewith diazomethane at 20 °C for 24h.

本文利用硝酸胍和丙二酸二乙酯为起始原料，经环合及甲氧基化两步反应得到除草剂啶嘧磺隆的中间体：2-氨基-4，6-二甲氧基嘧啶。

Other products include tea polyphenols, one for green food and cosmetic additives, and diacetone acrylamide, a new type of polymer monomer, used in the manufacture of waterborne coatings, photographic materials and lubricant additives, such as special polymer materials and has the second acid hydrazide, a coating applied to cross-linking agent, widely used in water-based coatings, adhesives.

其它产品包括茶多酚，一种用于食品和化装品的绿色添加剂，和双丙酮丙烯酰胺，一种新型高聚物单体，用于制造水性涂料、感光材料和润滑油添加剂等特殊高分子材料及已二酸二酰肼，一种适用于涂料用交联剂，广泛用于水性涂料，粘合剂。

Objective: To prepare antidote of the type of dimercaptosuccinic acid for the treatment of animal with heavy lewisite intoxication through intravenous injection.

目的：制备抗重度路易氏剂中毒静脉注射用的二巯基丁二酸类抗毒药。方法：采用两步纯化法提纯口服胶囊中DMSA粗品，供动物实验中静脉注射用。

The yield of dimethl 1, 15-pentadecanedioate was 80.5% when the ozonide of malania olceifera chum oil reacted with hydrogen peroxide at 55℃ for 2 hours.

在55℃下用H2O2作为氧化剂，裂解反应2h，1，15-十五二酸二甲酯的得率达到80.51%。

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作羟基化剂，使苯酚羟基化生成邻苯二酚和对苯二酚的研究开发进展。

Therefore, the metabolic pathway from soybean oil to erythromycin was presumed as follows: soybean oil is metabolized into TCA pathway to generate much α ketoglutaric acid and then generate succinyl CoA by strengthening TCA pathway, and the methylmalonyl CoA is formed from succinyl CoA by isomerization. Finally, methylmalonyl CoA can be used as the precursor for the biosynthesis of erythromycin.

推测豆油经过红色糖多孢菌代谢后进入红霉素合成的一条可能途径：豆油经过代谢后进入TCA循环，并强化了TCA循环的通量，产生了大量α酮戊二酸，再生成琥珀酰CoA，琥珀酰CoA在甲基丙二酰CoA异构酶的作用下生成甲基丙二酰CoA作为红霉素合成的前体。

These are converted by a series of chemical steps into hexamethylene diamine and adipic acid.

通过一系列的化学过程将这些物质转化成己二胺和己二酸。

MoS_2, behenic acid, MoS_2-BA LB film, frictional property

MoS2—二十二酸共混LB膜的摩擦特性研究。

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。