丙二酸 又称缩苹果酸。分子式HOOCCH2COOH。以钙盐形式存在于甜菜根中,甜菜制糖的浓缩罐里沉积的水垢即丙二酸钙。丙二酸为无色片状晶体;熔点135.6℃,140℃分解,密度1.619克/厘米3(16℃);能溶于水、醇和醚。能溶于丙酮、吡啶。
中文名称: 丙二酸 英文名称: propanedioic acid CAS No.: 141-82-2 分子式: C3H4O4 分子量: 104.06 理化特性 主要成分: 含量:≥98.5%。 外观与性状: 无色晶体。 熔点(℃): 135.6 沸点
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... 丙二醇一甲基醚 glycol monomethyl ether 丙二酸 diethyl malonate 丙二酸 malonic acid ...
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丙二酸二乙酯 Propanedioic acid diethyl ester ; Malonic acid diethyl ester ; Ethyl&n
丙二酸钠 Disodium malonate ; Sodium propaned ; Propanedioic acid, sodium salt ; Sodium malanate
甲基丙二酸 isosuccinic acid ; Methylpropanedioic acid ; METHYL-D3-MALONIC ACID
丙二酸酯合成 malonic ester synthesis
丙二酸二甲酯 Dimethyl malonate ; Dimethyl ; methylmalonate ; Malonic acid dimethyl ester
甲基丙二酸二乙酯 Diethyl methylmalonate ; Diethyl methylmalonate EINECS ; Methylmalonic acid diethyl ester ; Diethylmethyl
丙二酸盐 malonate ; Sodium malonate
丙二酸单乙酯 Ethyl hydrogen malonate ; mono-Ethyl malonate
无丙二酸柠檬酸杆菌 Citrobacter amalonaticua
Diethyl acetamidomalonate was made from diethyl malonate. Through nitrosation, hydrogenate reducion, and acylate three steps, the yield surpass 80% for the diethyl malonate.
乙酰氨基丙二酸二乙酯是以丙二酸二乙酯为原料,经过亚硝化,加氢还原及酰化三个步骤合成的。
参考来源 - DLUnder the conditions of 456 W power output and l0min irradiation time, the quantities of reactants are malonic acid 13. Og and vanillin lOg, in pyridine solvent (1 6m1), the yield of reaction is 80%.
本实验在额定功率为456W,辐射时间为10min下,反应物投料量分别为丙二酸13.6g,香兰素10g在16ml溶剂(吡啶)中进行反应。
参考来源 - 阿魏酸及其衍生物的合成研究According to the reported methods, two derivatives of 1-amino-β-carboline were synthesized, using acrylonitrile and diethyl malonate as starting materials through an eight-step sequence, such as condensation, Raney Ni catalyst, rearrangement and DDQ oxidation.
2. 以丙二酸二乙酯和丙烯氰为原料,经缩合、Raney Ni催化氢化、重排、 DDQ 氧化、氨基化合物取代等八步反应,合成了两个取代的1-氨基-β-咔啉衍 生物。
参考来源 - 天然β·2,447,543篇论文数据,部分数据来源于NoteExpress
这是诊断甲基丙二酸尿症的重要方法。
This is a very important method in diagnosing methylmalonic aciduria.
芦竹碱和乙酰氨基丙二酸二乙酯在碱性条件下缩合,得缩合物。
Under the alkali conditions, the gramine condension with diethyl acetamidomalonate to obtain the condensation compound.
除了去掉丙二酸之外,还可以怎样克服这种对呼吸作用的抑制?解释。
Aside from removing the malonate, how can this inhibition of respiration be overcome? Explain.
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