4-Ethoxy-1,1,1-trifluoro-3-buten-2-one

CAS NO.：17129-06-5
Empirical Formula: C6H7F3O2
Molecular Weight: 168.11
MDL number: MFCD00192131
EINECS: 629-004-6
SAFETY DATA SHEET (SDS)
Update Date: 2023-05-25 18:01:06

What is 4-Ethoxy-1,1,1-trifluoro-3-buten-2-one?

Chemical properties

light yellow liquid

The Uses of 4-Ethoxy-1,1,1-trifluoro-3-buten-2-one

4-Ethoxy-1,1,1-trifluoro-3-buten-2-one may be used in the synthesis of 4-dialkylamino-1,1,1-trifluorobut-3-ene-2-ones. It may be used for the synthesis of β-alkyl- or dialkylamino substituted enones bearing a CF₃ group.

General Description

4-Ethoxy-1,1,1-trifluoro-3-buten-2-one reacts with phenylmagnesium bromide to afford ethoxy group substitution products, while it reacts with organozinc compounds to yield products arising from 1,2-addition to the carbonyl group. 4-Ethoxy-1,1,1-trifluoro-3-buten-2-one on heating with triethyl phosphite affords [4+2] cycloaddition product, 2,2,2-triethoxy 2,3-dihydro-3-ethoxy-5-trifluoromethyl-1,2λ⁵-oxaphospholene, which on hydrolysis affords a 2-oxo-2-hydroxy-2, 3-dihydro-3-hydroxy 5-trifluoromethyl-1,2λ⁵-oxaphospholen. It reacts with amino to give the N-protected amino acids, which is useful for the peptide synthesis.

Properties of 4-Ethoxy-1,1,1-trifluoro-3-buten-2-one

Melting point:	-30℃
Boiling point:	51-53 °C/12 mmHg (lit.)
Density	1.18 g/mL at 25 °C (lit.)
refractive index	n20/D 1.406(lit.)
Flash point:	125 °F
storage temp.	2-8°C
solubility	soluble in Chloroform, Methanol
form	Liquid
color	Colorless to yellow
Sensitive	Moisture Sensitive
CAS DataBase Reference	17129-06-5(CAS DataBase Reference)

Safety information for 4-Ethoxy-1,1,1-trifluoro-3-buten-2-one

Signal word	Warning
Pictogram(s)	Flame Flammables GHS02 Health Hazard GHS08
GHS Hazard Statements	H226:Flammable liquids H351:Carcinogenicity H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P201:Obtain special instructions before use. P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P308+P313:IF exposed or concerned: Get medical advice/attention.