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ethyl 4,4,4-trifluorobut-2-ynoate

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Origin: China

Cas No: 79424-03-6

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 79424-03-6 Formula: C6H5F3O2 Molecular Weight: 166.09800

Basic Info

Chemical Name	ethyl 4,4,4-trifluorobut-2-ynoate
Synonyms	ethyl trifluoromethylpropiolate; ethyl 4,4,4-trifluoro-2-butynoate; ethyl 4,4,4-trifluobut-2-ynoate; ethyl 4,4,4-trifluoro-2-bytynoate; 4,4,4-trifluoro-2-butynoic acid ethyl ester; ethyl 3-trifluoromethylpropynoate;
CAS No.	79424-03-6
Molecular Formula	C6H5F3O2
Molecular Weight	166.09800
PSA	26.30000
LogP	1.11520

Properties

Density	1.162 g/mL at 25ºC(lit.)
Boiling Point	96-98ºC(lit.)
Flash Point	43 °F
Refractive Index	n20/D 1.350(lit.)
Storage Condition	Keep Cold

Safety Info

Hazard Class	3.1
Safety Statements	S16; S26; S36/37/39
HS Code	2916190090
Packing Group	II
RIDADR	UN 3272 3/PG 2
Risk Statements	R11
Hazard Codes	F; Xi

Synthesis Route

ethyl 4,4,4-trifluoro-3-oxo-2-(triphenyl-λ<sup>5</sup>-phosphanylidene)butanoate→ethyl 4,4,4-trifluorobut-2-ynoate
3,3,3-trifluoroprop-1-yne+Ethyl chloroformate→ethyl 4,4,4-trifluorobut-2-ynoate
lithium (trifluoromethyl)acetylide+Ethyl chloroformate→ethyl 4,4,4-trifluorobut-2-ynoate

Precursor

lithium (trifluoromethyl)acetylide
ethyl 4,4,4-trifluoro-3-oxo-2-(triphenyl-λ<sup>5</sup>-phosphanylidene)butanoate
Ethyl chloroformate
3,3,3-trifluoroprop-1-yne

Downstream Product

3H-Pyrazol-3-one, 1,2-dihydro-1-(phenylmethyl)-5-(trifluoromethyl)-
ethyl 2-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carboxylate
ethyl 1-methyl-4-(trifluoromethyl)-1H-pyrazole-3-carboxylate
1-Benzyl-3-(trifluoromethyl)-1H-pyrazol-5-ol

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