查询词典 esterification

The esterifying conditions of starch phosphate monoester of potato are investigated and analyzed in order to discuss the effects of esterification on granule diameter and gelatinization temperature of potato starch.

通过对磷酸单酯淀粉酯化条件的研究和分析，探讨了不同酯化条件对马铃薯淀粉磷酸单酯粒径和糊化温度的影响。

Metabolic alterations suggestive of repartitioning of fatty acids away from oxidation toward esterification in both liver and muscle occur in response to short-term adaptation to a HC diet.

在肝脏和肌肉组织中同时发生的脂肪酸氧化向酯化代谢的转变提示这是对高碳水化合物饮食的短期适应性反应。

The orthogonal experimental design was applied to investigate the effects of zirconia source Zr(NO34·5H2O, ZrOCl2·8H2O,precipitants and sulfating agent (sulfuric acid, ammonium sulfate) on the catalytic performance of the catalysts unde the most superior condition .The catalytic activity was tested in esterification of acetic acid with butanol .

在最优的条件下用正交设计法考察锆源（Zr(NO3)4·5H2O，ZrOCl2·8H2O）、沉淀剂和硫酸化试剂对催化剂性能的影响，并通过乙酸和正丁醇的酯化反应的酯化率检测所制备的SO4/ZrO2催化剂的催化效果。

The phenyl acetate was synthesized from phenyl hydroxide and acetyl chloride by direct esterification and the factors influencing the synthesis were studied.Results showed that the optimal conditions were:n(C6H6O):n(C2H3OCl)=1:1.2,the amount of solvent cyclohexane was 40 mL(compared to 0.15 mol C6H6O),the reaction temperature was 20℃,and the reaction time was 5 h.

乙酸苯酯(分子式C8H8O2)是重要的药物中间体，它可以转化得到邻羟基苯乙酮和对羟基苯乙酮的混合物，可用于治疗急慢性黄疸型肝炎、胆囊炎等疾病，其中邻羟基苯乙酮是合成抗心律失常药盐酸普罗帕酮的重要中间体。

Compared with the present process for the synthesis of acrylate by esterification of acrylic acid, which comes by oxygenation of propylene, the process by the carbonylation of acetylene to acrylic acid and its esters pays less cost, and so, is worth to be studied.

相对于目前主张的丙烯氧化法生产丙烯酸，再酯化生产丙烯酸酯的主流工艺，乙炔羰基化法合成丙烯酸及酯的工艺具有很好的经济性应用价值。

The left coumarin moiety was assembled by aldol condensation and then intramolecular esterification in one pot, which would be a popular method to build 3-substituted coumarins later.

最终，我们以12%的总产率和98.7%的ee值首次实现了-rutamarin的手性全合成；同时，我们还以17%的高产率实现了其消旋体的合成，比之以前文献报道的产率提高了2.5倍。

Bromo-2-sulfolene (2) reacted with substituted benzoic acid salt s 3a～3c or alizarin yellow (3d) to give four novel allylic substitution products 4a～4d by esterification reaction, respectively.

以3，4-二溴环戊砜(1)为原料，在无水吡啶作用下发生消除反应，得到反应中间体4-溴-2-环戊烯砜(2)，再分别与一系列取代苯甲酸盐3a～3c以及茜素黄GG(3d)发生酯化反应，合成出4种新环戊烯砜衍生物4a～4d，并用IR，1HNMR，MS，元素分析等表征了它们的结构。

Such as,(1) Active Zincdust catalyzed the esterification reactions between benzoyl chloride and phenol or alcohol,which needed not solvent, warming and could fulfilled in a very short period (1-2min), andthe handling of the reaction mixtures was very simple. We believe it's the simplest and mosteconomic method for the synthesis of many aryl esters.

包括：(1)活性锌粉催化的酯化反应，在室温下即可反应，毋需溶剂，毋需加热，反应迅速(通常1—2分钟即可反应完全)，处理非常简便，相信目前是合成许多芳香酯最简便的方法，是一种值得加以推广的合成芳香酯的好方法。

A new organic compound:N,N'-bis(1,10-phenanthroline-2-formacyl)-4,4'-diamino-diphenylmethane was synthesized via oxidation,esterification,substitution,hydrolysis, amidation of 1,10-phenanthroline as the starting material with chemical reagents (hydrogen peroxide,benzoyl chloride,potassium cyanide,sodium hydroxide solution,4,4'-diamino-diphenylmethane).

以邻菲啰啉为起始原料，与双氧水反应合成邻菲啰啉-N-氧化物，接着与苯甲酰氯、氰化钾、NaOH水溶液一一反应合成中间体邻菲啰啉-2-甲酸，再与4，4′-二氨基苯基甲烷进行酰胺化反应合成目标产物。

The effects of molar ratio of benzyl alcohol to acetic acid,reaction time,and the amount of catalyst and its reusability on esterification yield were discussed.

结果表明，乙酸苄酯最适宜的合成工艺条件为：酸醇摩尔比2∶1、催化剂用量3.5%、带水剂用量40%、反应时间6 h。

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。