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HomeProduct name listDiethyl aminomalonate hydrochloride

Diethyl aminomalonate hydrochloride

Synonym(s):Aminomalonic acid diethyl ester hydrochloride

  • CAS NO.:13433-00-6
  • Empirical Formula: C7H14ClNO4
  • Molecular Weight: 211.64
  • MDL number: MFCD00012510
  • EINECS: 236-556-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-09-10 19:09:04
Diethyl aminomalonate hydrochloride Structural

What is Diethyl aminomalonate hydrochloride?

Chemical properties

white to slightly yellow crystalline powder

The Uses of Diethyl aminomalonate hydrochloride

Diethyl aminomalonate hydrochloride is used as a pharmaceutical intermediate. Diethyl aminomalonate with formaldehyde generates an azomethine ylide which can undergo cycloadditions with 1,2-dipolarophiles to form pyrrolidines.

Synthesis

A solution of 420.0 g of a mixture of diethyl hydroxyiminomalonate and diethyl acetoxyiminomalonate (together 2.0 mol) in 400 ml of ethyl acetate, 40.0 g of anhydrous magnesium sulfate and 12.5 g of palladium on activated charcoal (5 percent by weight of Pd) as hydrogenation catalyst were placed in a 1.5 l pressure reactor equipped with a stirrer. At 30° to 35° C., hydrogen was introduced under a pressure of 20 bar for 80 minutes until the pressure remained constant. The reactor contents were thoroughly mixed by stirring during this process. The hydrogenation mixture was cooled to 20° C. and diluted with 200 ml of ethyl acetate and the mixture of hydrous magnesium sulfate and catalyst was filtered off. The solid which had been separated off was washed three times with a total of 200 ml of ethyl acetate and the wash liquor was combined with the filtrate. Diethyl aminomalonate hydrochloride was precipitated out as a white solid by the introduction of 68 g of dry hydrogen chloride, filtered off, washed with ethyl acetate and dried under a water jet vacuum at 70° C. The yield was 359.6 g (85.1% of theory), the melting point was 165° C. and the purity according to the analytically determined chlorine content was 100%.

Properties of Diethyl aminomalonate hydrochloride

Melting point: 165-170 °C (dec.)(lit.)
storage temp.  Inert atmosphere,2-8°C
solubility  Chloroform, DMSO, Water
form  Crystalline Powder
color  White to slightly yellow
Water Solubility  soluble
Sensitive  Hygroscopic
BRN  3568037
CAS DataBase Reference 13433-00-6(CAS DataBase Reference)

Safety information for Diethyl aminomalonate hydrochloride

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405:Store locked up.

Computed Descriptors for Diethyl aminomalonate hydrochloride

InChIKey GLFVNTDRBTZJIY-UHFFFAOYSA-N

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