diethyl malonate
英
美
二乙基丙二酸酯；丙二酸二乙酯
双语例句
- Synthesis of Diethyl Malonate Catalyzed by Ferric Sulfate under Microwave Irradiation
微波辐射硫酸铁催化合成丙二酸二乙酯的研究 - 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。 - Treatment of "three wastes", process feature, and its result were given for producing diethyl malonate from chloroacetic acid by cyanation and esterification.
前言：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。 - Synthesis of Diethyl Malonate by Carbonylation under Solid-Liquid Phase Transfer Conditions
固-液相转移催化羰基化合成丙二酸二乙酯 - The result showed that the catalyst had high catalytic activity with mild reaction conditions and convenient operation. The yield of the diethyl malonate could be up to 98% and the catalyst could be repeatedly used.
结果表明，催化剂的催化活性高，反应条件温和，方法简便，酯产率可达98%，而且催化剂可重复使用。 - Propafenone hydrochloride ( 1. HCl) was prepared from diethyl malonate and benzyl chloride, through condensation, cyclization, hydrolysis, etherification, and amination in20% 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%。 - Analysis of the pollutant in purified diethyl malonate by on line LG gc/ ftir method
LC-GC/FTIR联用方法分析丙二酸二乙酯中的污染物 - 2-ethyl diethyl malonate was synthesized from diethyl malonate and bromoethane in 90.4% yield.
以溴乙烷和丙二酸二乙酯为原料合成2-乙基丙二酸二乙酯，收率为90.4%。 - The purity of final product is 98% with yield up to 96% ( in terms of diethyl malonate).
目标产品纯度98%，产率高达96%（以丙二酸二乙酯计）。 - First we synthesized the 2-phenylethyl chloride from 2-phenylethyl alcohol. Then it was substituted by enolate anion of diethyl malonate and converted to ester.
在我们的合成方法中，先从2-苯乙醇开始合成了2-苯乙基氯，再用丙二酸二乙酯的烯醇盐离子进行亲核取代。 - Ethyl coumarin-3-carboxylate was synthesized from salicylaldehyde and diethyl malonate in absolute alcohol by Knoevenagel condensation reaction using hexahydropyridine as the catalyst. Hydrolysis of the reaction product with sodium hydroxide gave coumarin-3-carboxylic acid.
在无水乙醇中，以六氢吡啶为催化剂，通过水杨醛与丙二酸二乙酯的Knoevenagel缩合反应合成了香豆素-3-羧酸乙酯，再经水解、酸化得到香豆素-3-羧酸。 - Co-Catalytic Effects in Phase-transfer Catalyzed Alkylation Reaction of Diethyl Malonate
丙二酸二乙酯相转移烷基化反应的协同作用 - Sketch diethyl malonate production and synthetic technology of ester, introduce it ′ s extensive use in the organic synthesis in detail.
简述了丙二酸二乙酯的生产和合成技术，详细介绍了它在有机合成中的广泛用途。 - The alkylation of diethyl malonate and ethyl cyanoacetate using powdered potassium carbonate asa base in the absence of solvent and other catalyst is studied.
本文报道在碳酸钾存在下，丙二酸二乙酯、氰乙酸乙酯的固液相烃基化反应。 - Application of Fluoride Anion in Organic Syntheses ⅰ. Knoevenagel Reaction of Diethyl Malonate with Benzaldehyde Catalyzed by Anhydrous Potassium Fluoride
氟阴离子在有机合成中的应用Ⅰ.无水氟化钾催化丙二酸二乙酯与苯甲醛的Knoevenagel缩合反应 - The extraction of gold from electronic scrap with diethyl malonate
丙二酸二乙酯萃取电子废弃物中的金 - Butylation of Diethyl Malonate Catalyzed by Phase-transfer Catalyst and Microwave Irradiation
微波辐射相转移催化丙二酸二乙酯丁基化反应研究 - A quantitative relationship between molecular structure and chemical reactivity ⅱ. the addition reaction of alkenes and diethyl malonate
分子结构与化学活性间的定量关系Ⅱ.烯类与丙二酸二乙酯的加成反应 - 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。 - METHODS: The compound was synthesized from diethyl malonate in 4 steps.
方法：以丙二酸二乙酯为原料，途经加成、保护、脱乙氧羰基和还原等4步反应合成（2）。 - Butylation of diethyl malonate was conducted in presence of potassium fluoride on alumina, without solvent, under mono-microwave irradiation, by phase-transfer catalyst. It shows that the yield is higher and the selectivity is better under these conditions.
利用单膜微波技术和相转移催化技术，在没有溶剂的条件下，采用KF/Al2O3作碱，以较高的产率和较好的选择性迅速合成了丁基丙二酸二乙酯。 - Diethyl malonate ( DEM), as is often called Carrot acid ethyl ester, is an important fine chemical material, which is widely used in polyester, pharmaceutical, dyestuff and perfume industries.
丙二酸二乙酯（DiethylMalonate，DEM），俗称胡萝卜酸乙酯，是一种重要的精细化工有机原料，被广泛应用于聚酯、医药、染料及香料等工业。