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- The RNA was extracted from beer yeast by ammonolysis. 以啤酒酵母为原料,通过氨解法进行RNA提取的研究。
- DL aspartic acid was produced by ammonolysis of maleic anhydride in a titanium autoclave. 在一钛材高压釜中,对顺丁烯二酸酐(马来酸酐)进行氨化反应合成了DL天冬氨酸。
- Methods Etiracetam was synthesized from 2-pyrrolidone by N-alkylation and aminolysis. 方法2-吡咯烷酮经N-烷基化、氨解反应合成乙拉西坦。
- In addition, the effect of concentration of acyl chloride on the rate of ammonolysis was very small. 但在反应后期,反应速率呈明显的二级反应特征。
- The stability of the aqueous solution, aminolysis and hydrolysis of hydroxyglycine were examined. 并对羟基甘氨酸的溶液稳定性,氨解,水解进行了研究。
- This paper relates to the pretreatment of the mother liquor of ammonolysis andbromic recovery method in the new synthesis method of CLT acid. 本文介绍在新法合成CLT酸中,氨解母液的预处理和溴的回收方法。
- Methods: Starting from diethanolamine, BP897 was prepared via chlorination, cyclization, substitution, aminolysis and condensation reaction. 方法:以二羟乙基胺为起始原料,经过氯化、环合、取代、肼解、缩合等反应合成BP897。
- We propose that the thiol end-groups generated during the aminolysis of PMMA tend to cyclize through “backbiting” to form thiolactone structure. 同时我们也提出了一种制备端基巯基的PMMA的实用方法。
- Ammonolysis of dimethyl carbonate(DMC) to carbamate,a more promising route for synthesis of carbamate,was reviewed in detail,especially the catalysts. 认为碳酸酯胺解法是一种较有前途的方法,碳酸二甲酯胺解合成氨基甲酸酯是更具有工业应用前景的合成路线。
- Methods: The preparation of levetiracetam is adopting Late Ring-closure route, which can optimize the condition of the compound ammonolysis process. 方法:采用后闭环路线,优化氨解反应的工艺条件。
- It is slightly soluble in water,soluble in aloe when the temperature rises up or exists acid and alkali,hydrolysis speeds up place ammonolysis. 稍溶于水,能溶于乙酸,温度升高或有酸碱存在时,水解快,极易氨解。
- Chlorobenxene sulfonyl chloride was synthesized with chlorobenzene as a raw material, carbon tetrachloride as a solvent through chlorofulfonation and aminolysis. 以氯苯为原料,以四氯化碳为溶剂,经氯磺化、氨解合成了4-氯苯磺酰胺。
- The producing technology we adopted is predominantly the chloroacetic acid ammonolysis process.In the paper the improvement of the producing technology is studied on. 本文介绍了氯乙酸氨解法生产甘氨酸的工艺及其优化。通过优化的氯乙酸氨解法,缩短了工艺路线,减少了固定投资,降低了生产成本,提高了生产安全性。
- Ammonolysis of dimethyl carbonate (DMC) to carbamate, a more promising route for synthesis of carbamate, was reviewed in detail, especially the catalysts. 认为碳酸酯胺解法是一种较有前途的方法,碳酸二甲酯胺解合成氨基甲酸酯是更具有工业应用前景的合成路线。
- Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44. 以蛋氨酸为原料经还原脱硫甲基化、酯化、氨解、酰胺化及分子内缩和成环4步反应合成得到了左乙拉西坦;总收率44.;6%25。
- Matrix-assisted laser desorption inionization time-of-flight mass spectrometry, elemental analysis and NMR indicated that thiolactone terminus was formed after aminolysis of PMMA. 我们用GPC、MALDI-TOF MS、一维二维NMR、元素分析等方法对氨解过程和氨解产物做了详细的表征。
- Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44.6% overall yield. 摘要以蛋氨酸为原料经还原脱硫甲基化、酯化、氨解、酰胺化及分子内缩和成环4步反应合成得到了左乙拉西坦,总收率44.;6%25。
- This paper discourses upon a semi-microchemistry method to synthesize sulfanilamide from amiline through series of reactions such as acetylation,sulphonation,aminolysis and hydrolyzation. 论述了以苯胺为原料,经过乙酰化、氯磺酸磺化、胺解、水解等一系列基本单元反应,以半微量合成磺胺的操作方法。
- This paper advances the preparation method of erucamide by direct ammonolysis .of rape oil.sol-vent crystallization. The process is featured of simple technology,high yield and low cost. 本研究提出菜籽油直接氨解、溶剂脱脂、蒸馏预分离、溶剂结晶提纯制取芥酸酰胺的方法。该工艺具有过程简单,产品收率高,成本低的优点。
- This paper discourses upon a semi-microchemistry method to synthesize sulfanilamide from amiline through series of reactions such as acetylation, sulphonation, aminolysis and hydrolyzation. 摘要论述了以苯胺为原料,经过乙酰化、氯磺酸磺化、胺解、水解等一系列基本单元反应,以半微量合成磺胺的操作方法。