The acetoacetylated degree can be more than 70 percent with using CCl 3COOH,[LJ1,H,DY0] CH 3 SO 3H as catalyst at 120 ℃ or 140 ℃.
通过酯交换法可制得乙酰乙酰化丙烯酸共聚物。
Comment on deacetylation kinetics of chitin;
甲壳素脱乙酰化反应动力学规律评述
Deacetylation Kinetics of Chitin and Application of Chitosan on Antibacterial Activity and Dyeing;
甲壳素脱乙酰化动力学及壳聚糖在抗菌染色中的应用研究
Firstly,calcium carbonate is removed by marinating in hydrochloric acid;secondly,protein is removed by base and then chitin is obtained;then chitin reacts with concentrated base in 50 ℃ and through control the reaction time,chitosan are gained with different degrees of deacetylation(DD),respectively 85%,93%,99%.
利用H2O2的强氧化性制备低分子量分布的壳聚糖是将虾皮用HC l浸泡去除碳酸钙盐;再用稀碱除去蛋白质得甲壳素;然后浓碱在50℃与其反应,并控制反应时间,分别制备出脱乙酰度为85%,93%,99%的壳聚糖,最后用H2O2氧化不同脱乙酰化壳聚糖,得到不同低分子量的壳聚糖。
In the present article the reaction of(N-acetylation) was applied to prepare six chitosan samples with various DDs.
文章通过壳聚糖的N-乙酰化反应制备了不同脱乙酰度的壳聚糖。
Preparation, Characterization and Properties of the Production of Acetylated Wood Pulp;
木浆乙酰化产物的制备、表征及其性能研究
Research Progress in L-Phenylacetylcarbinol Production by Biosynthesis
生物转化法生产L-苯基乙酰基甲醇的研究进展
introduce an acetyl group into (a chemical compound).
在化合物中引进乙酰基。
Study on Synthesis of α-Link Ethyl Acetyl Monoacetylaniline Compound
α-环乙基乙酰乙酰苯胺类化合物的合成研究
Tandem Reactions Based on 3-oxo-N-arylbutanamides
基于乙酰乙酰胺类化合物的串联反应研究
releasing or activated by acetylcholine or a related compound.
释放出乙酰胆碱或相关化合物，或者被乙酰胆碱或相关化合物活化。
acetylcyclohexyl sulfonyl peroxide
乙酰环已基磺基过氧化物
Synthesis of Epoxyethylbenzene by Epoxidation of Styrene with Formamide-H_2O_2 System
甲酰胺-H_2O_2物系环氧化苯乙烯制环氧苯乙烷
Derection and Characteristics of a By-product in the Process of Synthesizing Trichloroacefic Chloride;
三氯乙酰氯生产中副产物的检测和表征
Biology Activity and Quantum Chemical Calculation of p-Toluene Sulfonylamido Acetacylhydrazone Derivatives
对甲苯磺酰胺基乙酰腙类化合物的生物活性及其量子化学计算
Optimizing producing conditions of chitin deacetylase
甲壳素脱乙酰酶产生菌产酶条件的优化
Synthesis and Research of Biological Activities of Aroylureas and Aroxyacetylureas with Tetrazole-ring;
含四唑环的芳酰脲和芳氧乙酰脲类化合物的合成及生物活性研究
Production of levulinic acid from sucrose catalyzed by ferric chloride supported on activated carbon
活性炭固载三氯化铁催化蔗糖产乙酰丙酸
Study on the Production of Levulinic Acid, a New Platform Chemical from Biomass;
生物质制备新型平台化合物乙酰丙酸的研究
Preparation and Analysis on the Products from Yeast Mannan Acetylysis Reaction;
酵母甘露聚糖乙酰解产物的制备和分析
Studies on the Synthesis, Purification and Application Characterization of Acetylated EGCG Derivatives
乙酰化EGCG衍生物的合成、纯化及应用特性研究
The detection of fluoroacetamide and metabolic product of fluoroacetate by GC/MS;
氟乙酰胺、氟乙酸中毒代谢产物“氟柠檬酸”的GC/MS分析研究
Objective HPLC method was developed for the determination of Acelglutamide and its related substance.
目的建立测定乙酰谷酰胺氯化钠注射液含量及有关物质的HPLC法。
