酰化试剂
- 网络acylating agent;Acylation reagent
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N-酰化反应,直接用酯作为酰化试剂与胺反应,代替了有强烈刺激性的酰氯,避免了酯的水解、氯化反应,既减少了反应步骤,又有利于清洁生产;
N-acylation takes place from ester as acylating agent and amine , which avoids the reaction of esterolysis and chlorination . Compared to the former method using irritant acyl chloride as acylating agent , this new process shortens the reaction steps and avoids pollution .
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采用酰化试剂A、酰化试剂B、交联剂和表面活性剂改性脱脂大豆粉,研究了各种方法改性后的脱脂大豆粉的粘接性和抗水性。
Adhesiveness and water resistance of soybean glue based on defatted soy flour modified with acylating reagent A , B , cross-linking reagent and surfactant were discussed .
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实验结果表明,热压能明显提高胶的粘接强度,酰化试剂B和交联剂改性能提高大豆胶的粘接性和抗水性。
The results indicated that hot-pressing improved the adhesive strength , and the adhesive strength and water resistance of the glue modified with acylating reagent B and cross-linking agent could be significantly improved .
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本文主要以甲烷磺酸做溶剂,以己酰氯为酰化试剂,合成不同取代度(DS)的已酰化壳聚糖(HC)。
In this work , hexanoyl chitosan ( HC ) with different degree of substitution ( DS ) were synthesized by acetylation reaction using MeSO_3H as a solvent and capronyl chloride as acylated reagent .
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亲核酰化试剂&酰基负离子的等价基团及其应用
Reagents for nucleophilic acylation-acyl carbanion equivalents and their use in synthesis
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所用的酰化试剂便宜、易得;
Acylated reagents used in its process are cheap and easily available ;
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以活性酰化试剂选择性制备蔗糖-6-酯
Selectivity in synthesizing sucrose-6-esters using active acyl regents
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在使用单组分酰化试剂测定木材溶液羟基值时,数据稳定性差。
The mono-component phthalate agent method is not stable for determining hydroxyl value of wood solution .
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方法以D-青霉胺为原料,在醋酸溶液中,用乙酰氯为酰化试剂进行消旋化,得到了D-青霉胺酰化消旋物;
METHODS : The acetylized racemic mixture of D-penicillamine was prepared by racemizing acetyl chloride in acetic acid solu_tion with D-penicillamine as feedstock .
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论文研究了酶源、酶量、反应介质、酰化试剂链长、溶剂含水量、反应时间等因素对环糊精、曲克卢丁、柚皮苷几种含糖底物区域选择性的影响。
Influence factors in enzymatic synthesis such as enzyme sources , reaction solvents , chain length of acyl donors , water content and reaction time were studied .
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结果此工艺具有反应条件温和、易控,原料便宜易得等优点,总收率54%,产品纯度≥99.0%。所用的酰化试剂便宜、易得;
RESULTS The overall yield was 54 % and the purity was over 99.0 % . acylated reagents used in its process are cheap and easily available ;
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以手性芳胺为母体,丙烯酰氯为酰化试剂,合成了新型手性功能单体(1)。用1合成了一系列手性分子印迹聚合物。
A series of chiral molecular imprinted polymer were synthesized from ( R ) - acryloyl-1-naphthylethylamine ( 1 , chiral functional monomer ) which was obtained from aromatic amine and acrylamide .
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实验结果表明:壳聚糖的酰化取代度主要取决于反应介质吡啶/氯仿用量比、酰化试剂的链长和壳聚糖分子量。
The experimental results indicate that the average substitution degree of acylation of chitosan depends on volume ratio of pyridine to chloroform in the reaction medium , chain length of the acyl chloride , and molecular weight of the chitosan .