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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

Ethyl 4,4,4-trifluoroacetoacetate | CAS 372-31-6

A CF3-bearing beta-keto ester that combines an active methylene with two different carbonyl functions, enabling fluorinated heterocycle construction and incorporation of a trifluoromethyl-containing carbon framework.

CAS372-31-6
Molecular formulaC6H7F3O3
Molecular weight184.11 g/mol

Product overview

The sequence CF3–CO–CH2–COOEt gives ethyl 4,4,4-trifluoroacetoacetate its synthetic character. The ketone and ester flank an active methylene, while the trifluoromethyl group is already attached to the carbonyl-containing framework. This makes the molecule a fluorinated carbon building block rather than a general fluorinating reagent. Published work uses it in heterocycle assembly, including fused pyrazolopyran systems. Procurement should identify the complete beta-keto ester and its ethyl ester group: ethyl trifluoroacetate and ethoxytrifluorobutenone are different reagents. A useful qualification package combines structural identification, a defined chromatographic assay and the water or related-substance criteria required by the intended condensation chemistry.

Chemical identity

Chemical name
Ethyl 4,4,4-trifluoroacetoacetate
CAS number
372-31-6
Molecular formula
C6H7F3O3
Molecular weight
184.11 g/mol

Application context

Ethyl trifluoroacetoacetate has been used in published research to prepare trifluoromethyl-substituted tetrahydropyrazolopyrans from arylidene pyrazolone partners. A multicomponent version of that chemistry has also been reported. The reagent contributes a carbon framework containing CF3 and carbonyl-derived functionality during construction of the fused heterocycle. This application illustrates its role as a beta-keto ester partner in fluorinated molecule development. The substitution pattern and product outcome depend on the chosen partners and route. For purchasing, define the desired feedstock composition and analytical limits that support that route, including fluorinated related substances where they are relevant to downstream separation.

Chemistry and synthetic role

The active methylene lies between a trifluoromethyl ketone and an ethyl ester. These nonequivalent carbonyl groups create different reaction sites within the same molecule.

Quality review

Verify the complete ester structure

Confirm CF3COCH2COOEt and the ethyl group, distinguishing it from simpler trifluoroacetates and enol ethers.

Define chromatographic impurity control

Agree how related fluorinated and nonfluorinated carbonyl species are resolved, rather than relying on a fluorine-containing formula alone.

Review water for the chosen route

Include water and assay-basis criteria where they affect condensation or reagent charging.

Preparing a specification

Specify CAS 372-31-6, the ethyl beta-keto ester, assay and identity methods, relevant fluorinated impurities and water criteria. If a solution is requested, list solvent and concentration.

Packaging and storage

Packaging, closure and net weight are agreed for the selected grade, order quantity and destination. Confirm storage and transport requirements against the actual supplier SDS.

Documentation

Request a batch COA, specification, identity data and SDS. Confirm the availability of the analytical methods and any application-specific impurity results with the proposed supplier.

Procurement questions

Is this a fluorinating agent?

Its documented role is to supply a pre-existing CF3-containing carbon framework.

Is it ethyl trifluoroacetate?

No. This molecule contains an additional ketone and methylene unit.

Is it interchangeable with ETFBO?

No. ETFBO is an ethoxy enone with different connectivity and reaction behaviour.

Technical sources
  1. Ethyl 4,4,4-trifluoroacetoacetate T0810TCI
  2. Ethyl 4,4,4-trifluoroacetoacetateFisher Scientific
  3. Regioselective synthesis of trifluoromethyl tetrahydropyrazolopyransJournal of Fluorine Chemistry