E50205

Sigma-Aldrich

Ethyl 4,4,4-trifluoroacetoacetate

99%

Synonym(s):
Ethyl 3-oxo-4,4,4-trifluorobutyrate, ETFAA
Linear Formula:
CF3COCH2CO2C2H5
CAS Number:
Molecular Weight:
184.11
Beilstein/REAXYS Number:
608353
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

99%

refractive index

n20/D 1.375 (lit.)

bp

129-130 °C (lit.)

density

1.259 g/mL at 25 °C (lit.)

SMILES string

CCOC(=O)CC(=O)C(F)(F)F

InChI

1S/C6H7F3O3/c1-2-12-5(11)3-4(10)6(7,8)9/h2-3H2,1H3

InChI key

OCJKUQIPRNZDTK-UHFFFAOYSA-N

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Application

Ethyl 4,4,4-trifluoroacetoacetate (ETFAA) is a general reagent to synthesize enantiopure trifluoromethyl-functionalized products. Applications include:
  • Synthesis of (S)- and (R)-α-trifluoromethyl-aspartic acid and α- trifluoromethyl-serine from chiral CF3-oxazolidines, which is derived from ETFAA.
  • Enantiopure synthesis of trifluoromethyl-β-amino acid derivatives.
  • Synthesis of (2R)-2-trifluoromethyl-2-carboxyazetidine, (R)- and (S)-trifluoromethylhomoserines from oxazolidine intermediate obtained by condensing (R)-phenylglycinol with ETFAA.

Packaging

5, 25, 100 g in glass bottle

Pictograms

FlameExclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 3272 3 / PGIII

WGK Germany

WGK 2

Flash Point(F)

100.4 °F - closed cup

Flash Point(C)

38 °C - closed cup

Certificate of Analysis

Certificate of Origin

Concise synthesis of enantiopure (S)-and (R)-α-trifluoromethyl aspartic acid and α-trifluoromethyl serine from chiral trifluoromethyl oxazolidines (Fox) via a Strecker-type reaction.
Simon J, et al.
Tetrahedron Asymmetry, 22(3), 309-314 (2011)
Straightforward Synthesis of Novel Enantiopure α-Trifluoromethylated Azetidine 2-Carboxylic Acid and Homoserines.
Lensen N, et al.
Organic Letters, 17(2), 342-345 (2015)
Ethyl-4, 4, 4-trifluoroacetoacetate (ETFAA), a powerful building block for enantiopure chirons in trifluoromethyl-β-amino acid series.
Michaut V, et al.
Journal of Fluorine Chemistry, 128(8), 889-895 (2007)

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