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分类

• {SNA} A-F, Alcoholic & Nonalcoholic Beverages, All Alphabetically Sorted, Alphabetical Index of Analytical Standards, Analytical Standards, Analytical/Chromatography, Brandy & Cognac, Chromatography, Cider, D, DID - DIN, Ester, Flavors and Fra

产品应用

• 检定氨和钾。气相色谱固定液(最高使用温度40℃，溶剂为苯、氯仿、乙醇)。用于树脂和硝化纤维素的溶剂，增塑剂。有机合成。

相关文献及参考

• C-Acylation of malonic esters is normally carried out by reaction of the Mg derivative with an acid chloride. A convenient method using a combination of MgCl2 and triethylamine was introduced by Rathke: J. Org. Chem., 50, 2622 (1985); see also Triethyl­amine, A12646 for discussion of this system:
• For phase-transfer monoalkylation of the active methylene group see, e.g. (18-crown-6): Synthesis, 37 (1977); and (BTEAC): Org. Prep. Proced. Int., 26, 469 (1994). Solid-liquid phase transfer alkylation has been promoted by microwave irradiation: Synth. Commun., 25,1761 (1995). Dialkylation can also occur in the presence of BTEAC: Synthesis, 54 (1985); Org. Synth. Coll., 7, 411 (1990), to give cyclopropane derivatives. Stereoselective alkylation has been achieved under particularly mild conditions with secondary alkyl mesylates in the presence of Cesium fluoride, 12885 in DMF; complete inversion occurs at the secondary alkyl carbon: J. Org. Chem., 60, 2627 (1995); see also: Synlett, 499 (1998).
• A number of procedures have been devised for the direct conversion of malonic esters to acetic esters (decarboalkoxylation), in a single step of which heating in wet DMSO is perhaps the simplest: J. Org. Chem., 43, 138 (1978). See also 1,4-Diazabicyclo[2.2.2]octane, A1400
• Merck:14,3823
• Merck:14,3823 Beilstein:2,573
• Compare also Dimethyl­ malonate, A11007, Di-tert-butyl­ malonate, A12774, Dibenzyl­ malonate, A10844, and Isopropyl­idene malonate, A15603.
• Substituents can also be introduced by Michael addition; see e.g.: Org. Synth. Coll., 8, 467 (1993).
• A number
• A number of procedures have been devised for the direct conversion of malonic esters to acetic esters (decarboalkoxylation), in a single step of which heating in wet DMSO is perhaps the simplest: J. Org. Chem., 43, 138 (1978). See
• Arylation occurs with aryl bromides in the presence of CuI: Gazz. Chim. Ital., 122, 511 (1992).

安全信息

GHS Symbol

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : >16 mL/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   30,470,1969

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 6400 mg/kg
TOXIC EFFECTS :
   Tumorigenic - active as anti-cancer agent
REFERENCE :
   BIJOAK Biochemical Journal.  (Biochemical Soc. Book Depot, POB 32, Commerce
   Way, Colchester, Essex CO2 8HP, UK)  V.1-    1906- Volume(issue)/page/year:
   34,1196,1940

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 14900 uL/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   30,470,1969

其他信息

• {Chemicalbo
• Acros Organics:丙二酸二乙酯 Diethyl malonate, 99+%(105-53-3)
• 丙二酸二乙酯价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2011/08/23 30060928 丙二酸二乙酯;丙二酸乙酯; 胡萝卜酸乙酯 500ml 45元 2011/04/16 M0029 丙二酸二乙酯 Diethyl Malonate 25ML 150元 2011/04/16 M0029 丙二酸二乙酯 Diethyl Malonate 500ML 360元
• 用途四:丙二酸二乙酯是有机合成中间体。在染料、香料、磺酰脲类除草剂等生产中用途广泛，丙二酸二乙酯主要用于生产乙氧甲叉、巴比妥酸、烷基丙二酸二乙酯，进而合成医药如诺氟沙星、罗美沙星、氯喹、保泰松等及合成染料和颜料如苯并咪唑酮类有机颜料。国外丙二酸二乙酯主要用来生产乙氧甲
• 上游原料:乙醇 --> 盐酸 --> 硫酸 --> 碳酸钠 --> 氰化钠 --> 丙二酸 --> 氯乙酸 --> 氯乙酸钠 --> 氰乙酸 --> 乙醇95% --> 磷酸氢二钠 --> 丙二酸钠盐一水合
• 用途二:GB 2760一96规定为允许使用的食用香料。主要用于配制梨、苹果、葡萄、樱桃等水果型香精。
• 方法三:丙二酸二乙酯的生产方法主要以氰化酯化法和催化羰基化法，目前工业普遍采用的仍是传统的氰化酯化法。由氯乙酸经中和、氰化、水解、酯化而得。氯乙酸在30℃用碳酸钠中和生成氯乙酸钠，在92-95℃用氰化钠氰化，再用碱水解生成丙二酸钠。丙二酸钠经干燥后在硫酸存在下与乙醇于70-72℃进行酯化。酯化产物经洗涤、蒸馏得成品丙二酸二乙酯。原料消耗定额：氯乙酸（95%）650kg/t、氰化钠（95%）340kg/t、乙醇（95%）910kg/t。国外开发的新工艺主要以催化羰基化法为主，即以氯乙酸酯、一氧化碳、乙醇为原料，在催化剂存在下一步反应合成丙二酸二乙酯。相比之下，催化羰基化法工此外，还有氰乙酸钠法，由氰乙酸与乙醇直接酯化而得。
• FEMA:2375
• 外观性质:无色透明液体, 微具芳香气味。
• 下游产品:2-已基十一酸 --> 环戊乙酸 --> 5-氯苯并呋喃-2-甲酸乙酯 --> 1-乙基-6-氟-1,4-二氢-4-氧代-7-(-哌嗪基)-1,8-萘啶-3-羧酸 --> 保泰松 --> 4,6-二氯-2-甲砜基嘧啶 --> 2-苯并呋喃羧基 酸乙酯 --> 5-硝基苯并呋喃-2-甲酸 --> 4-氯-6-甲氧基-2-甲磺酰基嘧啶 --> 氯代丙二酸二乙酯 --> 7-甲氧基苯并呋喃-2-甲酸乙酯 --> 2-巯基-4,6-二甲氧基嘧啶 --> 6-甲氧基-2-甲硫基-4-氯嘧啶 --> 2-三氟甲基-4-羟基嘧啶-5-羧酸 --> 5-硝基-2-吡啶羧酸 --> 乙氧基-丙二酸二乙酯 --> 脲嘧啶-5-羧酸 --> 2-甲基-4,6-二羟基嘧啶 --> 4-氯-7-三氟甲基喹啉 --> 1,1,2-乙烷三羧酸三乙酯 --> 2-(乙硫基)-4-羟基嘧啶-5-乙酸乙酯 --> 2,4,5-三氟苯乙酸 --> 格列齐特 --> 4,6-二羟基-2-巯基嘧啶 --> 4-羟基-6-三氟甲基喹啉-3-甲酸乙酯 --> 正丁基丙二酸二
• 用途五:检定氨和钾。气相色谱固定液(最高使用温度40℃，溶剂为苯、氯仿、乙醇)。用于树脂和硝化纤维
• 蒸气压:1 mm Hg ( 40 °C)
• 方法一:以氯乙酸为原料，用水溶解后，在<;30℃加碳酸钠水溶液至pH=7，氰化钠用水溶解后加入到该氯乙酸钠溶液，于92～95℃氰化反应1h，加入碱液，于100～105℃加热反应1h，进行水解，然后加热除去水分，再加入乙醇和甲苯，滴加少许硫酸，于68～70℃反应3h，进行酯化，然后分层，取酯层进行减压蒸馏即为成品。ClCH 2 COOH+Na 2 CO 3 →ClCH 2 COONa ClCH 2 COONa+NaCH→NCCH 2 COONa+NaCl NCCH 2 COONa+NaOH[H 2 O]→NaOOC-CH 2 -COONa+NH 3
• 海关编码:29171910
• Hazard Note:Irritant
• 蒸气密度:5.5