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- The RNA was extracted from beer yeast by ammonolysis. 以啤酒酵母為原料,通過(guò)氨解法進(jìn)行RNA提取的研究。
- DL aspartic acid was produced by ammonolysis of maleic anhydride in a titanium autoclave. 在一鈦材高壓釜中,對順丁烯二酸酐(馬來(lái)酸酐)進(jìn)行氨化反應合成了DL天冬氨酸。
- Methods Etiracetam was synthesized from 2-pyrrolidone by N-alkylation and aminolysis. 方法2-吡咯烷酮經(jīng)N-烷基化、氨解反應合成乙拉西坦。
- In addition, the effect of concentration of acyl chloride on the rate of ammonolysis was very small. 但在反應后期，反應速率呈明顯的二級反應特征。
- The stability of the aqueous solution, aminolysis and hydrolysis of hydroxyglycine were examined. 并對羥基甘氨酸的溶液穩定性,氨解,水解進(jìn)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. 本文介紹在新法合成CLT酸中,氨解母液的預處理和溴的回收方法。
- Methods: Starting from diethanolamine, BP897 was prepared via chlorination, cyclization, substitution, aminolysis and condensation reaction. 方法:以二羥乙基胺為起始原料,經(jīng)過(guò)氯化、環(huán)合、取代、肼解、縮合等反應合成BP897。
- We propose that the thiol end-groups generated during the aminolysis of PMMA tend to cyclize through “backbiting” to form thiolactone structure. 同時(shí)我們也提出了一種制備端基巰基的PMMA的實(shí)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. 認為碳酸酯胺解法是一種較有前途的方法,碳酸二甲酯胺解合成氨基甲酸酯是更具有工業(yè)應用前景的合成路線(xiàn)。
- Methods: The preparation of levetiracetam is adopting Late Ring-closure route, which can optimize the condition of the compound ammonolysis process. 方法:采用后閉環(huán)路線(xiàn),優(yōu)化氨解反應的工藝條件。
- 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，溫度升高或有酸堿存在時(shí)，水解快，極易氨解。
- Chlorobenxene sulfonyl chloride was synthesized with chlorobenzene as a raw material, carbon tetrachloride as a solvent through chlorofulfonation and aminolysis. 以氯苯為原料,以四氯化碳為溶劑,經(jīng)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. 本文介紹了氯乙酸氨解法生產(chǎn)甘氨酸的工藝及其優(yōu)化。通過(guò)優(yōu)化的氯乙酸氨解法,縮短了工藝路線(xiàn),減少了固定投資,降低了生產(chǎn)成本,提高了生產(chǎn)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. 認為碳酸酯胺解法是一種較有前途的方法，碳酸二甲酯胺解合成氨基甲酸酯是更具有工業(yè)應用前景的合成路線(xiàn)。
- Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44. 以蛋氨酸為原料經(jīng)還原脫硫甲基化、酯化、氨解、酰胺化及分子內縮和成環(huán)4步反應合成得到了左乙拉西坦;總收率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. 我們用GPC、MALDI-TOF MS、一維二維NMR、元素分析等方法對氨解過(guò)程和氨解產(chǎn)物做了詳細的表征。
- Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44.6% overall yield. 摘要以蛋氨酸為原料經(jīng)還原脫硫甲基化、酯化、氨解、酰胺化及分子內縮和成環(huán)4步反應合成得到了左乙拉西坦，總收率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. 論述了以苯胺為原料,經(jīng)過(guò)乙?；?、氯磺酸磺化、胺解、水解等一系列基本單元反應,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、溶劑脫脂、蒸餾預分離、溶劑結晶提純制取芥酸酰胺的方法。該工藝具有過(guò)程簡(jiǎn)單，產(chǎn)品收率高，成本低的優(yōu)點(diǎn)。
- This paper discourses upon a semi-microchemistry method to synthesize sulfanilamide from amiline through series of reactions such as acetylation, sulphonation, aminolysis and hydrolyzation. 摘要論述了以苯胺為原料，經(jīng)過(guò)乙?；?、氯磺酸磺化、胺解、水解等一系列基本單元反應，以半微量合成磺胺的操作方法。
