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Sigma-Aldrich

Ethyl acetoacetate

ReagentPlus®, 99%

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Synonym(s):
EAA, Ethyl 3-oxobutanoate, Acetoacetic ester
Linear Formula:
CH3COCH2COOC2H5
CAS Number:
141-97-9
Molecular Weight:
130.14
Beilstein:
385838
EC Number:
205-516-1
MDL number:
MFCD00009199
PubChem Substance ID:
24878213
NACRES:
NA.22

vapor density

4.48 (vs air)

Quality Level

200

vapor pressure

1 mmHg ( 28.5 °C)

product line

ReagentPlus®

Assay

99%

autoignition temp.

580 °F

expl. lim.

9.5 %

bp

181 °C (lit.)

mp

−43 °C (lit.)

solubility

water: soluble 130 g/L at 20 °C

density

1.029 g/mL at 20 °C (lit.)

SMILES string

CCOC(=O)CC(C)=O

InChI

1S/C6H10O3/c1-3-9-6(8)4-5(2)7/h3-4H2,1-2H3

InChI key

XYIBRDXRRQCHLP-UHFFFAOYSA-N

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Application

Ethyl acetoacetate is a versatile reagent that can be used as a nucleophile in alkylation, conjugate addition and condensation reactions. Some of its applications are:
  • Alkylation at the α-carbon of ethyl acetoacetate followed by hydrolysis and decarboxylation can afford a variety of methyl ketones.
  • It also undergoes acylation at the α-carbon in the presence of MgCl2 and pyridine to give synthetically important intermediates.
  • It can be used in Knoevenagel condensation with aliphatic, aromatic, and heteroaromatic aldehydes to produce α-alkylideneacetoacetates.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

164.3 °F - closed cup

Flash Point(C)

73.5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Ethyl Acetoacetate.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)
Synthetic Applications of Dealkoxycarbonylations of Malonate Esters, β-Keto Esters, α-Cyano Esters and Related Compounds in Dipolar Aprotic Media-Part II.
Krapcho A P
Synthesis, 1982(11), 893-914 (1982)
Knoevenagel-kondensationen mit titantetrachlorid/base?II: Alkyliden-und arylidenacet-bzw.-nitroessigester bei 0?22?.
Lehnert W
Tetrahedron, 28(3), 663-666 (1972)
Procedures for the acylation of diethyl malonate and ethyl acetoacetate with acid chlorides using tertiary amine bases and magnesium chloride.
Rathke MW and Cowan PJ.
The Journal of Organic Chemistry, 50(15), 2622-2624 (1985)
Gui-Rong Qu et al.
Organic letters, 11(8), 1745-1748 (2009-03-20)
A novel approach to the synthesis of purines bearing functionalized carbon substituents or methyl in position 6 was developed. Under different reaction conditions, 6-halopurine derivatives could react with ethyl acetoacetate efficiently to yield 2-(purin-6-yl)acetoacetic acid ethyl esters, (purin-6-yl)acetates and 6-methylpurines
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