BGC > Buscar Producto > 2-Chloro-3-oxobutanoic acid

Product name:Ethyl 2-chloroacetoacetate
Synonyms:2-CHLOROACETOACETIC ACID ETHYL ESTER;2-CL-ACE;A-CHLOROACETOACETIC ESTER;AKOS BBS-00004302;ETHYL 2-CHLOROACETOACETATE;ETHYL ALPHA-CHLOROACETOACETATE;ETHYL CHLOROACETOACETATE;2-Chloro-3-oxobutanoic acid, ethyl ester
CAS: 609-15-4
Formula:C6H9ClO3
Molecular weight: 164.59

Melting point:-80 °C
Boiling point: 107 °C14 mm Hg(lit.)
Density :1.19 g/mL at 25 °C(lit.)
Index of refraction: n20/D 1.441(lit.)
Flash point:122 °F
Water solubility:17 g/L (20 ºC)
BRN :774278

Chemical Properties: This product is oily liquid, b.p.96 ~ 99 ℃ (4 ~ 4.7kPa) or b.p.186 ℃, n16D 1.4320, relative density 1.075, soluble in ethanol and other solvents.
Appearance: ethyl 2-chloroacetoacetate is colorless to pale yellow transparent liquid
Purity:99%min
Package:200kg/drum

Usage:
1.Chloro-3-chloro-a-intermediate for the synthesis of ethyl organophosphate insecticide coumaphos-4-methyl coumarin.

2.Intermediate ethyl 2-chloroacetoacetate may be used in the synthesis of pesticides

Brief manufacture process:

The preparation method is obtained from acetyl chloride, ethyl α- chloro ethyl acetoacetate.
The thionyl chloride and ethyl acetoacetate in equimolar proportions were dissolved in an adequate solvent, at low temperature, with stirring and negative pressure, the thionyl chloride was added dropwise to a solution of ethyl acetoacetate, and then stirring was continued for several hours. Was washed with saturated brine reactant, points to the water layer, oil layer dried over anhydrous magnesium sulfate, and solvent removal, vacuum distillation, collecting 96 ~ 99 ℃ / 4 ~ 4.7kPa vapor effluent, namely α- chloro ethyl acetoacetate.
The reaction can also be used chlorinating agent instead of chlorine gas.