缩合

B环取代基对黄酮类化合物缩合、关环的影响

The Substituting Groups of B Ring Affecting the Condensation and Closing Ring

DNA体外缩合的研究进展

Advances in the Study of DNA Condensation in Vitro

话题触及国防，缩合字，缩写字和行话就满天飞

Scratch the subject of defence and acronyms , abbreviations , and buzzwords fly out .

邻甲酚酞甲醛缩合物及其纤维素膜的pH敏感性

O-cresolphthalein-formaldehyde polymer immobilized cellulose membrane and its pH sensitivity

化学法合成维生素E基本都采用异植物醇与2，3，5-三甲基氢醌经缩合、酯化反应来合成。

Absract : Isophytol and2,3,5-trimethylhydroquinone are basic raw materials in the chemical synthesis of Vitamin E.

维生素K1缩合反应进展

Progress in vitamin K _1 synthesis

FTIR图谱解析表明硅／磷溶胶与纤维上的羟基发生缩合。

FTIR suggested that Si-P sol had reacted with hydroxyl of fibers .

KF/Al2O3催化柠檬醛和丙酮缩合制备假性紫罗兰酮

Synthesis of Pseudo-ionone by Condensation of Citral with Acetone in presence of KF / Al_5O_3

影响贮存稳定性的因素有酸性合成阶段反应物的配比、最终产品的pH值、缩合度等。

Factors affected the storage stability include ratio of the reactants , pH value of the end products and degree of condensation .

ADC生产中缩合废水的氨氮处理工艺

Ammonia-nitrogen treatment process of condensed wastewater in ADC production

合成了由水杨醛和赖氨酸缩合的新的氨基酸schiff碱配体以及它的镧系元素配合物。

A new lysine-salicylaldehyde schiff-base and its lanthanide complexes are prepared .

研究了以固体Ba（OH）2作为催化剂，使柠檬醛与丙酮醛醇缩合反应制备假紫罗酮的方法。

Using solid barium hydroxide as catalyst , a preparation method of pseudoionone from citral and acetone has been studied .

NF脂肪族系高效减水剂系是以丙酮、甲醛为主要原料，辅以适量磺化剂、引发剂，在一定反应条件下合成的新型高性能减水剂，是一种羟基磺酸盐高缩合物。

NF acyclic superplasticizer has been made mainly of acetone and formaldehyde under certain reaction conditions .

缩合反应时间为2h；二嗪磷缩合工艺的改进

Condensation time is 2 hours ; Improving Condensation of Diazinon

气相羟醛缩合法制MA及MMA研究进展

Progress in the Research on Vapor-phase Aldol Condensation to MA and MMA

尿素在银电极表面上吸附及缩合反应的SERS研究

SERS Study of Adsorption and Condensation Reaction of Urea on Silver Electrode

对用MQ硅树脂增强缩合型双组分室温硫化硅橡胶进行了研究。

MQ silicone resins was used to reinforce two component RTV silicone rubbers of condensation-curing type .

本文利用GC-MS对苯胺与丙酮缩合反应的产物进行了结构分析。

The present research analyzed the structure of the condensation products of aniline with acetone by GC-MS.

在本课题的研究中，通过硅烷偶联剂与硅溶胶颗粒表面硅羟基缩合的方法，制备了改性的纳米SiO2。

Modified SiO2 nanoparticles were synthesized by condensation of OH group of silica and the coupling agent .

以苯酚、甲醛为原料，以磷酸为催化剂，无溶剂条件下经酚醛缩合合成了双酚F。

The bisphenol F was synthesized by condensation reaction using phosphoric acid as catalyst , phenol and formaldehyde as feed stock under the non-solvent condition .

选用W酸作为催化剂能够缩短反应时间、降低缩合反应温度、提高促进剂M的纯度；

W acid catalyst used in Salicylic acid catalyst can shorten reaction time , decrease reaction temperature and increase the purity of crude accelerator M.

根据FTIR测定结果，推测在反应中可能发生酮与酸酐的缩合反应。

It was deduced from FTIR that the condensation reaction was caused by a reaction of ketone group with anhydride .

对烷氧基硅烷的sol-gel反应过程，特别是起始的水解和初步缩合过程已有较多的研究。

Among such researches , there has been much exploration on the sol-gel reaction kinetics , especially the hydrolysis and initial condensation processes .

SiO2负载磷钨酸（盐）催化剂对乙酰乙酸乙酯与乙二醇缩合反应的催化性能

Catalytic Performance of Phosphotungstic Acid ( Salt ) Supported on SiO_2 for Acetalization of Ethyl Acetoacetate with Glycol

在氟化钾催化下，芳香醛与氰乙酸乙酯发生羰基与活性亚甲基的缩合反应，高收率地得到缩合产物，且只得到E式产物。

The carbonyl methylene condensation reaction of aromatic aldehydes with ethyl cyanoacetate has been carried out smoothly in the presence of potassium fluoride only giving E isomers in high yield .

高能注射法制备MO（N）/γ-Al2O3催化剂用于苯胺气相缩合生成二苯胺的研究

Study on the Catalyst of Mo ( N ) / γ - A1_2O_3 Prepared by High Energy Injection for the Vapor - phase Condensation of Aniline to Diphenylamine

利用质谱分析结果结合量子化学ABINITIO方法，研究甲醇缩合脱水的反应过程。

Mass Spectrometry and quantum chemistry ab initio method have been used to study the reactivity of the methanol dehydration .

固体碱催化丙酮Aldol缩合反应

The Aldol Condensation of Acetone on a Solid Alkaline Catalyst

缩合温度110℃，缩合时间6h，pH≈3.0，明胶用量为废糖蜜重量的0.6%。

Condensation temperature is 110 ℃, the time is 6h , the acidity pH ≈ 3.0 , and the amount of the gelatin 0.6 % .

结果表明，与硫酸盐浆（KP）相比，碱性&亚钠法浆（ASP）中残余木素含有较少的缩合型结构以及木素与半纤维素的连接；

Results showed that the condensed structure and the connection between lignin and semi-cellulose in ASP were less than those in KP .