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- diethyl benzyl malonate [医] 苄基丙二酸二乙酯, 苯丁二酸二乙酯
- Propafenone hydrochloride(1.HCl)was prepared from diethyl malonate and benzyl chloride,through condensation,cyclization,hydrolysis,ethe-rification,and amination in 20% overall yield. 由氯苄与丙二酸二乙酯经缩合、环合、水解、醚化、胺化合成盐酸普罗帕酮,总收率20%25。
- ethyl sodio benzyl malonate 钠代苄基丙二酸乙酯
- With diethyl malonate as the extractant,the condition of extracting gold the electronic scrap was studied. 研究了采用萃取剂丙二酸二乙酯回收电子废弃物中金的方法。
- Through nitrosation, hydrogenate reducion, and acylate three steps, the yield surpass 80% for the diethyl malonate. 收率相对于丙二酸二乙酯达到了80%25以上。
- The preparation of 3,5-dinitroacetophenone from 3,5-dinitrobenzoic acid and diethyl malonate has been investigated. 本文采用丙二酸二乙酯合成法,以3,5-二硝基苯甲酸为原料,经酰化、缩合、脱酸等步骤合成了3,5-二硝基苯乙酮。
- The purity of final product is 98% with yield up to 96% (in terms of diethyl malonate). 目标产品纯度98%25，产率高达98%25（以丙二酸二乙酯计）。
- It was obtained from diethyl malonate in about 24 2% yield through hexylation, methylation, hydrolysis and decarboxylation. 以丙二酸二乙酯为原料,经己基化、甲基化、水解、脱羧,合成了2-甲基辛酸,总收率为242%25。
- Diethyl malonate is an important organic synthetic intermediate which is widely used in the production of pharmaceutical, colorants and spicery. 丙二酸二乙酯是重要的有机合成中间体,广泛应用于医药、染料和香料等工业。
- Keywords benzyl malonic acid;synthesis;catchability;galena;sphalerite;smithsonite; 苄基丙二酸;合成;捕收性能;方铅矿;闪锌矿;菱锌矿;
- Treatment of "three wastes", process feature, and its result were given for producing diethyl malonate from chloroacetic acid by cyanation and esterification. 介绍了氯乙酸氰化酯化法生产丙二酸二乙酯时“三废”的治理工艺、技术特点及其效果。
- Keywords benzyl malonic acid;hydroximic acid;calamine;hematite;cooperation mechanism; 苄基丙二酸;羟肟酸;菱锌矿;赤铁矿;协同作用机理;
- Diethyl methyl malonate was prepared by cyanidation, bydrolysis and esterification with 2?chloropropionic acid as raw material and o verall yield is 41%. 以2-氯丙酸为原料;经氰化、水解、酯化制得甲基丙二酸二乙酯;总收率41%25.
- Starting from guanidine nitrate, diethyl malonate and glucide, the benzene sulfonyl urea herbicide primisulfurion-methyl is synthesized through five steps of reaction. 以硝酸胍、丙二酸二乙酯和糖精为起始原料,经5步反应合成了苯磺酰脲类除草剂氟嘧磺隆。
- A new process has been developed to synthesize melomic acid from diethyl malonate through hydrolysis reaction and catalyzing by strong acid type cation exchange resin. 该工艺以丙二酸二乙酯为原料,经强酸性阳离子交换树脂催化,通过水解反应制备丙二酸。
- The coker gas oil was refined by benzyl alcohol extraction. 以苄醇为溶剂,用萃取方法提高了焦化柴油的质量。
- Abstract： Diethyl malonate is an important organic synthetic intermediate which is widely used in the production of pharmaceutical, colorants and spicery. 摘 要： 丙二酸二乙酯是重要的有机合成中间体,广泛应用于医药、染料和香料等工业。
- Benzyl N,N diethyldithiocarbamate (BDC)was synthesized. 合成N ,N’ 二乙基二硫代氨基甲酸苄酯 (BDC)。
- Firstly, we studied the carbozincation of acetylenic sulfones with organozinc reagents, which include allyl zinc bromide, benzyl zinc bromide, aryl zinc chloride, alkyl zinc chloride and diethyl zinc. 研究了烯丙基溴化锌、苄基溴化锌、芳基氯化锌、烷基氯化锌等有机锌试剂与炔基砜的碳锌化反应。
- However, Malon detects Dalan’s trickery due to her clumsy slipup. 大兰破绽百出，被马郎识破。
