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Keywords diethyl malonate;3;5-dinitroacetophenone;azeotrope; 丙二酸二乙酯合成法;3;5-二硝基苯乙酮;恒沸物;
Keywords diethyl malonate;carbonylation;phase transfer catalysis; 丙二酸二乙酯;羰基化;相转移催化法;
Keywords Diethyl malonate Alkylation Phase-transfer Catalyze; 丙二酸二乙酯;烷基化;相转移催化;
Keywords Diethyl Malonate;Organic synthesis;Application; 丙二酸二乙酯;有机合成;应用;
Keywords diethyl malonate;microwave irradiation;alkylation; 丙二酸二乙酯;微波辐照;烷基化;
Keywords diethyl malonate;alkylation;carbonylation;organic synthesis; 丙二酸二乙酯;烷基化;羰基化;有机合成;
Keywords diethyl malonate;saponiflcation;decarboxylation;glucose caprylamine; 丙二酸二乙酯;皂化;脱羧;葡辛胺;
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。
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。
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。
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。
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。
Keywords sex pheromone;2-methyl octanoic;diethyl malonate; 性信息素;2-甲基辛酸;丙二酸二乙酯;
Keywords diethyl adipate;catalyst;preparation; 己二酸二乙酯;催化剂;制备;