Product Name

  • Name

    Ethyl difluoroacetate

  • EINECS 207-223-4
  • CAS No. 454-31-9
  • Article Data46
  • CAS DataBase
  • Density 1.135 g/cm3
  • Solubility Slightly soluble in water
  • Melting Point
  • Formula C4H6F2O2
  • Boiling Point 76 °C at 760 mmHg
  • Molecular Weight 124.087
  • Flash Point 1.1 °C
  • Transport Information UN 1992
  • Appearance clear colorless liquid
  • Safety 45-36/37/39-26-16-27
  • Risk Codes 34-10
  • Molecular Structure Molecular Structure of 454-31-9 (Ethyl difluoroacetate)
  • Hazard Symbols CorrosiveC, FlammableF, ToxicT, IrritantXi
  • Synonyms Aceticacid, difluoro-, ethyl ester (6CI,7CI,8CI,9CI);2,2-Difluoroacetic acid ethylester;Difluoroacetic acid ethyl ester;Ethyl 2,2-difluoroacetate;Ethyl difluoroacetic;
  • PSA 26.30000
  • LogP 0.81460

Synthetic route

Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-7-methylbenzo-[d]imidazole; [Zr(2,6-bis(5-methyl-3-phenyl-1H-pyrrol-2-yl)pyridine)2] In benzene-d6 for 2.5h; Catalytic behavior; UV-irradiation; Inert atmosphere; Schlenk technique;98%
With 1,2,3-trimethoxybenzene; (3,5-dimethyl-2-(2-pyridyl)pyrrolide)3ZrCl; 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-7-methylbenzo-[d]imidazole In benzene-d6 at 33℃; for 0.5h; Time; Irradiation; Glovebox;85%
With N,N,N,N,-tetramethylethylenediamine In dimethylsulfoxide-d6 at 20℃; for 15h; Irradiation;41%
Stage #1: Ethyl bromodifluoroacetate With zinc In tetrahydrofuran at 20 - 50℃; for 1h; Inert atmosphere;
Stage #2: With hydrogenchloride In tetrahydrofuran; water at 0℃; Product distribution / selectivity;
~ 90 %Chromat.
With hydrogen; nickel; triethylamine In ethanol at 80℃; under 3750.38 - 7500.75 Torr;
ethanol
64-17-5

ethanol

2,2-difluoroacetyl fluoride
2925-22-6

2,2-difluoroacetyl fluoride

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With N,N-dimethyl acetamide for 4h; Product distribution / selectivity; Inert atmosphere; Sealed tube; Cooling with ice;96%
With sodium carbonate at 5 - 20℃; for 1h; Product distribution / selectivity; Inert atmosphere;77%
at 20℃; for 0.5h;
ethanol
64-17-5

ethanol

Difluoroacetic acid N,N-dimethylamide
667-50-5

Difluoroacetic acid N,N-dimethylamide

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With sulfuric acid at 0 - 70℃; for 2h; Temperature;93.98%
1,1-diethoxy-2,2-difluoro-ethane
36589-84-1

1,1-diethoxy-2,2-difluoro-ethane

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With dihydrogen peroxide; vanadia at 5℃; for 5h;89.9%
1,1,2,2-tetrafluoroethyl ethyl ether
512-51-6

1,1,2,2-tetrafluoroethyl ethyl ether

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With sulfuric acid In water at 54 - 56℃; for 1h;87%
Stage #1: Ethyl 1,1,2,2-tetrafluoroethyl ether With sulfuric acid; hydrogen fluoride In ethanol; water at -20 - 50℃; for 24h; Autoclave;
Stage #2: With sodium hydrogencarbonate at 20℃; under 760.051 Torr; for 1h; Reagent/catalyst;
86%
With nitric acid
With sulfuric acid
With water; fluorinated γ-alumina at 180℃; for 0.0202778h; Product distribution / selectivity; Inert atmosphere; Gas phase;
ethanol
64-17-5

ethanol

1,1,2,2-tetrafluoroethyl ethyl ether
512-51-6

1,1,2,2-tetrafluoroethyl ethyl ether

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With sulfuric acid; silica gel at 50℃; for 24h; Time; Autoclave;86%
ethyl 2-chloro-2,2-difluoroacetate
383-62-0

ethyl 2-chloro-2,2-difluoroacetate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen; triethylamine In ethanol at 30℃; under 750.075 - 3000.3 Torr;75%
With zinc In N,N-dimethyl-formamide at 70℃; Yield given;
1-Heptene
592-76-7

1-Heptene

ethyl 2,2-difluoro-2-iodoacetate
7648-30-8

ethyl 2,2-difluoro-2-iodoacetate

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

Ethyl 2,2-Difluoro-4-iodononanoate
127224-10-6

Ethyl 2,2-Difluoro-4-iodononanoate

Conditions
ConditionsYield
With hydroquinone; nickel dichloride; zinc In tetrahydrofuran; water 1) RT, 15 min, 2) RT, 20 min;A 70%
B 17%
ethyl 2-chloro-2,2-difluoroacetate
383-62-0

ethyl 2-chloro-2,2-difluoroacetate

A

Difluoroacetic acid
381-73-7

Difluoroacetic acid

B

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C

2-chloro-2,2-difluoroacetic acid
76-04-0

2-chloro-2,2-difluoroacetic acid

Conditions
ConditionsYield
With ethanol; zinc for 1 - 3h; Product distribution / selectivity; Heating / reflux;A 9.7%
B 61.6%
C 0.4%
ethanol
64-17-5

ethanol

difluoroacetonitrile
359-12-6

difluoroacetonitrile

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With sulfuric acid In water at 10 - 120℃; for 14h;57%
2-oxo-propionic acid ethyl ester
617-35-6

2-oxo-propionic acid ethyl ester

Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

2,2,3,3-tetrafluoro-4-hydroxy-4-methyl-pentanedioic acid diethyl ester

2,2,3,3-tetrafluoro-4-hydroxy-4-methyl-pentanedioic acid diethyl ester

Conditions
ConditionsYield
Stage #1: 2-oxo-propionic acid ethyl ester; Ethyl bromodifluoroacetate In N,N-dimethyl-formamide at -20℃;
Stage #2: With Tetrakis(dimethylamino)ethylen In N,N-dimethyl-formamide at -20 - 20℃;
A n/a
B 25%
Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

1,3,5-tris(4-methoxybenzyl)hexahydro-1,3,5-triazine
58837-16-4

1,3,5-tris(4-methoxybenzyl)hexahydro-1,3,5-triazine

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

1-(4'-methoxybenzyl)-3,3-difluoroazetidin-2-one

1-(4'-methoxybenzyl)-3,3-difluoroazetidin-2-one

C

3,3,5,5-tetrafluoro-1-(4-methoxy-benzyl)-piperidine-2,4-dione

3,3,5,5-tetrafluoro-1-(4-methoxy-benzyl)-piperidine-2,4-dione

D

5,5-difluoro-1,3-bis-(4-methoxy-benzyl)-tetrahydro-pyrimidin-4-one

5,5-difluoro-1,3-bis-(4-methoxy-benzyl)-tetrahydro-pyrimidin-4-one

Conditions
ConditionsYield
Stage #1: Ethyl bromodifluoroacetate With chloro-trimethyl-silane; zinc In tetrahydrofuran for 0.416667h;
Stage #2: 1,3,5-tris(4-methoxybenzyl)hexahydro-1,3,5-triazine In tetrahydrofuran at 25℃; for 3h;
A n/a
B 25%
C n/a
D n/a
ethyl 1,1-dichloroacetate
535-15-9

ethyl 1,1-dichloroacetate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With potassium fluoride In ethanol; water at 100℃; for 40h; Solvent; Concentration;21%
With potassium fluoride; C6H9BO4 In ISOPROPYLAMIDE at 20 - 75℃; Halex reaction;
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

ethyl trifluoroacetate,
383-63-1

ethyl trifluoroacetate,

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

α-(trimethylsilyl)difluoroacetic acid ethyl ester
205865-67-4

α-(trimethylsilyl)difluoroacetic acid ethyl ester

C

trifluoroacetyltrimethylsilane ethyltrimethylsilyl ketal
565214-84-8

trifluoroacetyltrimethylsilane ethyltrimethylsilyl ketal

D

2,3-diethoxy-1,1,1,4,4,4-hexafluoro-2,3-bis-trimethylsilanyloxy-butane

2,3-diethoxy-1,1,1,4,4,4-hexafluoro-2,3-bis-trimethylsilanyloxy-butane

Conditions
ConditionsYield
With tetrabutylammomium bromide In tetrahydrofuran at -25℃; Electrochemical reaction; Further byproducts given;A 8%
B 8 % Spectr.
C 33 % Spectr.
D 1 % Spectr.
Difluoroacetic acid
381-73-7

Difluoroacetic acid

ethanol
64-17-5

ethanol

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With sulfuric acid
acetyl fluoride
557-99-3

acetyl fluoride

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With fluorine at 100℃; ueber Kupferdrahtnetz und Umsetzen der Reaktionsprodukte mit absol.Aethanol;
diethyl ether
60-29-7

diethyl ether

1,1,2,3,4,4-hexafluoro-2-butene
17976-35-1

1,1,2,3,4,4-hexafluoro-2-butene

A

difluoroacetic acid methyl ester
433-53-4

difluoroacetic acid methyl ester

B

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With potassium hydroxide; potassium permanganate 1.) 60 degC, water; Yield given. Multistep reaction. Yields of byproduct given;
Difluoroacetic acid
381-73-7

Difluoroacetic acid

sodium ethanolate
141-52-6

sodium ethanolate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With N-(2-chloro-1,1,2-trifluoroethyl)diethylamine; sodium fluoride 1.) -78 deg C, 15 min, 2.) triglyme; Yield given. Multistep reaction;
ethyl trifluoroacetate,
383-63-1

ethyl trifluoroacetate,

A

ethane
74-84-0

ethane

B

Fluoroacetic acid
144-49-0

Fluoroacetic acid

C

ethyl 2-fluoroacetate
459-72-3

ethyl 2-fluoroacetate

D

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

E

ethyl acetate
141-78-6

ethyl acetate

Conditions
ConditionsYield
With N,N,N,N,N,N-hexamethylphosphoric triamide for 2h; Quantum yield; Irradiation;
1,1,2,2-tetrafluoroethyl ethyl ether
512-51-6

1,1,2,2-tetrafluoroethyl ethyl ether

sulfuric acid
7664-93-9

sulfuric acid

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

diethyl sulfate
64-67-5

diethyl sulfate

difluoroacetate_of sodium

difluoroacetate_of sodium

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

acetyl fluoride
557-99-3

acetyl fluoride

fluorine

fluorine

copper wire

copper wire

A

ethyl 2-fluoroacetate
459-72-3

ethyl 2-fluoroacetate

B

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C

ethyl trifluoroacetate,
383-63-1

ethyl trifluoroacetate,

Conditions
ConditionsYield
at 100℃; Umsetzen der Reaktionsprodukte mit absol.Aethanol bei -80grad,zuletzt bei Siedetemperatur;
N-benzylidene benzylamine
780-25-6

N-benzylidene benzylamine

α-(trimethylsilyl)difluoroacetic acid ethyl ester
205865-67-4

α-(trimethylsilyl)difluoroacetic acid ethyl ester

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

N-benzylidene-α-(trimethylsilyl)benzylamine
53986-95-1

N-benzylidene-α-(trimethylsilyl)benzylamine

Conditions
ConditionsYield
With N,N,N,N,N,N-hexamethylphosphoric triamide; potassium fluoride at 50℃; for 12h;
Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

ethyl acrylate
140-88-5

ethyl acrylate

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

2,2-difluoroglutaric acid diethyl ester
428-97-7

2,2-difluoroglutaric acid diethyl ester

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; water; copper In tetrahydrofuran Michael Addition;A 10 %Spectr.
B 52 %Spectr.
Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

phenylboronic acid
98-80-6

phenylboronic acid

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

ethyl 2,2-difluoro-2-phenylacetate
2248-46-6

ethyl 2,2-difluoro-2-phenylacetate

Conditions
ConditionsYield
With 2,2':6,2''-terpyridine; nickel chloride dimethyl ether; potassium carbonate In 1,4-dioxane at 80℃; for 8h; Schlenk technique; Inert atmosphere;A 7 %Spectr.
B 1 %Spectr.
With [2,2]bipyridinyl; [1,1'-bis(diphenylphosphino)ferrocene]nickel(II) chloride; potassium carbonate In 1,4-dioxane at 80℃; for 8h; Reagent/catalyst; Solvent; Schlenk technique; Inert atmosphere;A 6 %Spectr.
B 89 %Spectr.
1-ethenyl-2-pyrrolidinone
88-12-0

1-ethenyl-2-pyrrolidinone

Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

4-biphenylboronic acid
5122-94-1

4-biphenylboronic acid

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

ethyl 4-([1,1'-biphenyl]-4-yl)-2,2-difluoro-4-(2-oxopyrrolidin-1-yl)butanoate

ethyl 4-([1,1'-biphenyl]-4-yl)-2,2-difluoro-4-(2-oxopyrrolidin-1-yl)butanoate

C

2-([1,1'-biphenyl]-4-yl)-2,2-difluoroacetic acid ethyl ester
73789-98-7

2-([1,1'-biphenyl]-4-yl)-2,2-difluoroacetic acid ethyl ester

Conditions
ConditionsYield
With (1,2-dimethoxyethane)dichloronickel(II); 4,4'-dibromo-2,2'-bipyridine; potassium carbonate In tetrahydrofuran at 80℃; for 24h; Reagent/catalyst; Solvent; Schlenk technique; Inert atmosphere;A 15 %Spectr.
B 53 %Spectr.
C 13 %Spectr.
1-ethenyl-2-pyrrolidinone
88-12-0

1-ethenyl-2-pyrrolidinone

Ethyl bromodifluoroacetate
667-27-6

Ethyl bromodifluoroacetate

4-biphenylboronic acid
5122-94-1

4-biphenylboronic acid

A

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

B

ethyl 4-([1,1'-biphenyl]-4-yl)-2,2-difluoro-4-(2-oxopyrrolidin-1-yl)butanoate

ethyl 4-([1,1'-biphenyl]-4-yl)-2,2-difluoro-4-(2-oxopyrrolidin-1-yl)butanoate

C

C10H13F2NO3

C10H13F2NO3

D

2-([1,1'-biphenyl]-4-yl)-2,2-difluoroacetic acid ethyl ester
73789-98-7

2-([1,1'-biphenyl]-4-yl)-2,2-difluoroacetic acid ethyl ester

Conditions
ConditionsYield
With bis(triphenylphosphine)nickel(II) chloride; 4,4'-Dimethoxy-2,2'-bipyridin; potassium carbonate In tetrahydrofuran at 80℃; for 24h; Concentration; Reagent/catalyst; Solvent; Schlenk technique; Inert atmosphere;A 13 %Spectr.
B 49 %Spectr.
C 7 %Spectr.
D 36 %Spectr.
ethyl 2-chloro-2,2-difluoroacetate
383-62-0

ethyl 2-chloro-2,2-difluoroacetate

A

difluoroethanol
359-13-7

difluoroethanol

B

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen; triethylamine In ethanol at 45℃; under 7500.75 - 30003 Torr; for 5h; Temperature; Time; Pressure;
ethyl 2,2-difluoro-2-iodoacetate
7648-30-8

ethyl 2,2-difluoro-2-iodoacetate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen; triethylamine In tetrahydrofuran at 100℃; under 750.075 - 15001.5 Torr;
With diethylzinc In hexane; [D3]acetonitrile at -20℃; for 8h; Schlenk technique; Inert atmosphere;
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

1-ethoxy-2,2-difluoroethanol
148992-43-2

1-ethoxy-2,2-difluoroethanol

Conditions
ConditionsYield
With lithium aluminium tetrahydride In tetrahydrofuran; diethyl ether at -78℃; for 2.75h;100%
With lithium aluminium tetrahydride In tetrahydrofuran; diethyl ether at -78℃; for 3h;60%
With lithium aluminium tetrahydride In tetrahydrofuran; diethyl ether at -78℃; for 3h; Reagent/catalyst; Solvent;60%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C13H23NO3

C13H23NO3

C15H23F2NO4

C15H23F2NO4

Conditions
ConditionsYield
With potassium tert-butylate In toluene at 0 - 20℃; for 2h; Inert atmosphere;100%
With potassium tert-butylate In toluene at 0 - 20℃; for 2h; Inert atmosphere;100%
With potassium tert-butylate In toluene at 0 - 20℃; Inert atmosphere;100%
With potassium tert-butylate In toluene at 0 - 20℃; for 2h; Inert atmosphere;100%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C13H23NO3

C13H23NO3

C15H23F2NO4

C15H23F2NO4

Conditions
ConditionsYield
With potassium tert-butylate In toluene at 0 - 20℃; for 2h; Inert atmosphere;100%
(S)-{(1α,5α,6α)-3-[4-(5-aminomethyl-2-oxooxazolidin-3-yl)-2,6-difluorophenyl]-3-azabicyclo[3.1.0]hex-6-yl}carbamic acid tert-butyl ester
681425-32-1

(S)-{(1α,5α,6α)-3-[4-(5-aminomethyl-2-oxooxazolidin-3-yl)-2,6-difluorophenyl]-3-azabicyclo[3.1.0]hex-6-yl}carbamic acid tert-butyl ester

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

(S)-[(1α,5α,6α)-3-(4-{5-[(2,2-difluoroacetylamino)methyl]-2-oxooxazolidin-3-yl}-2,6-difluorophenyl)-3-azabicyclo[3.1.0]hex-6-yl]carbamic acid tert-butyl ester
681425-33-2

(S)-[(1α,5α,6α)-3-(4-{5-[(2,2-difluoroacetylamino)methyl]-2-oxooxazolidin-3-yl}-2,6-difluorophenyl)-3-azabicyclo[3.1.0]hex-6-yl]carbamic acid tert-butyl ester

Conditions
ConditionsYield
With triethylamine In methanol at 20℃; for 15h;99%
With triethylamine In methanol at 20℃; for 15h;99%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

5-(aminomethyl)-2-chloropyridine
97004-04-1

5-(aminomethyl)-2-chloropyridine

N-(2-chloro-5-aminomethylpyridine)-1,1-difluoroacetamide
1135440-09-3

N-(2-chloro-5-aminomethylpyridine)-1,1-difluoroacetamide

Conditions
ConditionsYield
at 100℃; for 1h; Reflux;99%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

trifluoroacetic acid
76-05-1

trifluoroacetic acid

A

Difluoroacetic acid
381-73-7

Difluoroacetic acid

B

ethyl trifluoroacetate,
383-63-1

ethyl trifluoroacetate,

Conditions
ConditionsYield
at 85℃; Product distribution / selectivity;A 99%
B n/a
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C14H23NO3

C14H23NO3

C16H23F2NO4

C16H23F2NO4

Conditions
ConditionsYield
With potassium tert-butylate In toluene at 0 - 20℃; for 2h; Inert atmosphere;99%
With potassium tert-butylate In toluene at 0 - 20℃; Inert atmosphere;99%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C13H22FNO3

C13H22FNO3

C15H22F3NO4

C15H22F3NO4

Conditions
ConditionsYield
With potassium tert-butylate In toluene at 0 - 20℃; Inert atmosphere;99%
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

benzophenone
119-61-9

benzophenone

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

diphenylmethyl trimethylsilyl ether
14629-59-5

diphenylmethyl trimethylsilyl ether

Conditions
ConditionsYield
With magnesium In 1-methyl-pyrrolidin-2-one at 20℃; Inert atmosphere;98%
tert-butyl 3-acetylpiperidine-1-carboxylate
858643-92-2

tert-butyl 3-acetylpiperidine-1-carboxylate

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

tert-butyl 3-(4,4-difluoro-3-oxobutanoyl)piperidine-1-carboxylate

tert-butyl 3-(4,4-difluoro-3-oxobutanoyl)piperidine-1-carboxylate

Conditions
ConditionsYield
With potassium tert-butylate In benzene at 0 - 20℃; for 5h; Inert atmosphere;98%
With potassium tert-butylate In benzene at 0 - 20℃; for 5h; Inert atmosphere;97%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

phenethylamine
64-04-0

phenethylamine

2,2-difluoro-N-(2-phenylethyl)acetamide

2,2-difluoro-N-(2-phenylethyl)acetamide

Conditions
ConditionsYield
In dichloromethane for 16h; Reflux; Inert atmosphere;98%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

histamine
51-45-6

histamine

2,2-difluoro-N-[2-(1H-imidazol-4-yl)ethyl]acetamide

2,2-difluoro-N-[2-(1H-imidazol-4-yl)ethyl]acetamide

Conditions
ConditionsYield
In dichloromethane for 16h; Reflux; Inert atmosphere;98%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

5-acetyl-6-hydroxy-4,7-dimethoxybenzofuran
484-51-5

5-acetyl-6-hydroxy-4,7-dimethoxybenzofuran

7-(difluoromethyl)-7-hydroxy-4,9-dimethoxy-6,7-dihydro-5H-furo[3,2-g]chromen-5-one
376384-40-6

7-(difluoromethyl)-7-hydroxy-4,9-dimethoxy-6,7-dihydro-5H-furo[3,2-g]chromen-5-one

Conditions
ConditionsYield
With lithium hydride In tetrahydrofuran Heating;97%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

Diethyl methylphosphonate
683-08-9

Diethyl methylphosphonate

diethyl (3,3-difluoro-2-oxopropyl)phosphonate
1023327-32-3

diethyl (3,3-difluoro-2-oxopropyl)phosphonate

Conditions
ConditionsYield
Stage #1: Diethyl methylphosphonate With n-butyllithium In tetrahydrofuran; hexane at -95℃; for 1h; Inert atmosphere;
Stage #2: ethyl difluoroacetate In tetrahydrofuran; hexane at -95 - -90℃; for 1h; Inert atmosphere;
97%
Stage #1: Diethyl methylphosphonate With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 1h;
Stage #2: ethyl difluoroacetate In tetrahydrofuran at -78 - 0℃; Further stages.;
82%
With n-butyllithium In tetrahydrofuran; hexane at -78 - -65℃; for 3h;
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

2,2-difluoroacetamide
359-38-6

2,2-difluoroacetamide

Conditions
ConditionsYield
With ammonia In ethanol at 0 - 25℃; for 2.5h;96%
With ammonia
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

1-(3-fluoro-4-methoxyphenyl)ethanone
455-91-4

1-(3-fluoro-4-methoxyphenyl)ethanone

4,4-difluoro-1-(3-fluoro-4-methoxyohenyl)-butane-1,3-dione
170570-77-1

4,4-difluoro-1-(3-fluoro-4-methoxyohenyl)-butane-1,3-dione

Conditions
ConditionsYield
With hydrogenchloride; sodium methylate In tert-butyl methyl ether96%
With hydrogenchloride; sodium methylate In tert-butyl methyl ether96%
With hydrogenchloride; sodium methylate In tert-butyl methyl ether96%
formic acid
64-18-6

formic acid

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

A

Difluoroacetic acid
381-73-7

Difluoroacetic acid

B

formic acid ethyl ester
109-94-4

formic acid ethyl ester

Conditions
ConditionsYield
sulfuric acid at 70℃; Product distribution / selectivity;A 96%
B n/a
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

ethyl acetate
141-78-6

ethyl acetate

ethyl 4,4-difluoro-3-oxobutyrate
352-24-9

ethyl 4,4-difluoro-3-oxobutyrate

Conditions
ConditionsYield
Stage #1: ethyl acetate With sodium ethanolate at 25℃;
Stage #2: ethyl difluoroacetate at 10 - 65℃;
Stage #3: With sulfuric acid; water at 20 - 25℃; for 0.333333h; Product distribution / selectivity;
95.5%
With multielement hydrotalcite at 55℃; for 8h; Catalytic behavior; Temperature; Reagent/catalyst; Green chemistry;88.9%
With lithium diisopropyl amide In diethyl ether at -70℃; for 4h;82%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

phenylacetylene
536-74-3

phenylacetylene

1,1-difluoro-4-phenyl-3-butyn-2-one
117710-72-2

1,1-difluoro-4-phenyl-3-butyn-2-one

Conditions
ConditionsYield
Stage #1: phenylacetylene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 3h; Inert atmosphere;
Stage #2: ethyl difluoroacetate With boron trifluoride diethyl etherate In tetrahydrofuran; hexane at -78℃; for 2h; Inert atmosphere;
95%
With n-butyllithium; boron trifluoride diethyl etherate 1.) THF, -78 deg C, 30 min, 2.) -78 deg C, 90 min; Yield given. Multistep reaction;
With n-butyllithium; boron trifluoride diethyl etherate 1.) hexane, THF, -78 deg C, 30 min, 2.) THF, hexane, -78 deg C, 1.5 h; Yield given. Multistep reaction;
With n-butyllithium; boron trifluoride diethyl etherate
benzoimidazole
51-17-2

benzoimidazole

ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

1-(difluoromethyl)-1H-benzo[d]imidazole
84941-15-1

1-(difluoromethyl)-1H-benzo[d]imidazole

Conditions
ConditionsYield
With potassium hydroxide In acetonitrile at 60℃; for 6h; Concentration; Solvent; Temperature; Sealed tube;95%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

difluoroethanol
359-13-7

difluoroethanol

Conditions
ConditionsYield
With hydrogen at 110℃; under 3750.38 - 15001.5 Torr; for 4h; Temperature; Pressure; Autoclave;93.3%
With C39H53ClN2P2Ru; potassium methanolate; hydrogen In tetrahydrofuran at 20℃; under 38002.6 Torr; for 16h; Glovebox; Autoclave;93%
With lithium aluminium tetrahydride In tetrahydrofuran at -10℃; for 1h;44.6%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

1-(2-anilinophenyl)ethan-1-one
23699-74-3

1-(2-anilinophenyl)ethan-1-one

2-(difluoromethyl)-1-phenylquinolin-4(1H)-one
837364-34-8

2-(difluoromethyl)-1-phenylquinolin-4(1H)-one

Conditions
ConditionsYield
With lithium hydride In tetrahydrofuran for 1h; Heating;93%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

4'-benzyloxy-acetophenone
54696-05-8

4'-benzyloxy-acetophenone

4,4-difluoromethyl-1-(4-benzyloxyphenyl)-butane-1,3-dione

4,4-difluoromethyl-1-(4-benzyloxyphenyl)-butane-1,3-dione

Conditions
ConditionsYield
With sodium methylate In methanol93%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

1-cyclohexenyl methyl ketone
932-66-1

1-cyclohexenyl methyl ketone

4,4-difluoro-1-[2-cyclohexenyl]-butane-1,3-dione

4,4-difluoro-1-[2-cyclohexenyl]-butane-1,3-dione

Conditions
ConditionsYield
With hydrogenchloride; sodium methylate93%
With hydrogenchloride; sodium methylate93%
ethyl difluoroacetate
454-31-9

ethyl difluoroacetate

C10H11FN2O

C10H11FN2O

C12H11F3N2O2

C12H11F3N2O2

Conditions
ConditionsYield
With dmap In methanol at 20℃; for 12h;92.8%

Ethyl difluoroacetate Chemical Properties

IUPAC Name: Ethyl 2,2-difluoroacetate 
Following is the structure of Aceticacid, 2,2-difluoro-, ethyl ester (CAS NO.454-31-9):
                          
Molecular Formula: C4H6F2O2
Molecular Weight: 124.09g/mol
Mol File: 454-31-9.mol
EINECS: 207-223-4
Flash Point: 1.1 °C
Density: 1.135 g/cm3
Refractive index: 1.3465-1.3485
Surface Tension: 20.4 dyne/cm
Boiling point: 76 °C at 760 mmHg
Enthalpy of Vaporization: 31.71 kJ/mol
Vapour Pressure: 103 mmHg at 25°C
XLogP3-AA: 0.9
H-Bond Acceptor: 4
Molar Refractivity: 22.64 cm3
Molar Volume: 109.3 cm3
Appearance of Aceticacid, 2,2-difluoro-, ethyl ester (CAS NO.454-31-9): Colorless to light brown clear liquid
Product Categories of Aceticacid, 2,2-difluoro-, ethyl ester (CAS NO.454-31-9): Pharmaceutical Intermediates; Fluoro-Aliphatics ; Organic Fluorides; Fluorochemicals; Fluorinated Building Blocks; Fluorinating Reagents & Building Blocks for Fluorinated Biochemical Compounds; Synthetic Organic Chemistry; C2 to C5; Carbonyl Compounds; Esters
Canonical SMILES: CCOC(=O)C(F)F
InChI: InChI=1S/C4H6F2O2/c1-2-8-4(7)3(5)6/h3H,2H2,1H3  
InChIKey: GZKHDVAKKLTJPO-UHFFFAOYSA-N

Ethyl difluoroacetate Safety Profile

Safety Information of Aceticacid, 2,2-difluoro-, ethyl ester (CAS NO.454-31-9):
Hazard Codes: CCorrosive,FFlammable,TToxic,XiIrritant
Risk Statements: 34-10 
10:  Flammable
34:  Causes burns
Safety Statements: 45-36/37/39-26-16-27
16:  Keep away from sources of ignition - No smoking 
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
27:  Take off immediately all contaminated clothing 
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
RIDADR: 1992
Hazard Note: Flammable
HazardClass: 3
PackingGroup: III  

Ethyl difluoroacetate Specification

 Aceticacid, 2,2-difluoro-, ethyl ester , its CAS NO. is 454-31-9, the synonyms are Ethyl difluoroacetate ; and Acetic acid, difluoro-, ethyl ester .

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