Product Name

  • Name

    N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine

  • EINECS
  • CAS No. 1550-50-1
  • Article Data3
  • CAS DataBase
  • Density 1.17 g/cm3
  • Solubility
  • Melting Point
  • Formula C4H7F4N
  • Boiling Point 47.451 °C at 760 mmHg
  • Molecular Weight 145.1
  • Flash Point -17.5 °C
  • Transport Information UN 2734 8/PG 1
  • Appearance
  • Safety 26-36/37/39-45
  • Risk Codes 11-35
  • Molecular Structure Molecular Structure of 1550-50-1 (N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine)
  • Hazard Symbols FlammableF, CorrosiveC
  • Synonyms Ethylamine,1,1,2,2-tetrafluoro-N,N-dimethyl- (6CI,8CI);1,1,2,2-Tetrafluoro-N,N-dimethylethanamine;N-(1,1,2,2-Tetrafluoroethyl)dimethylamine;
  • PSA 3.24000
  • LogP 1.40590

Synthetic route

polytetrafluoroethylene
116-14-3

polytetrafluoroethylene

dimethyl amine
124-40-3

dimethyl amine

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

Conditions
ConditionsYield
at 20℃; for 12h;98%
at -70℃;
Difluoroacetic acid N,N-dimethylamide
667-50-5

Difluoroacetic acid N,N-dimethylamide

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

Conditions
ConditionsYield
With Carbonyl fluoride at 20 - 25℃; for 16h; Neat (no solvent);85%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

ethyl 3-(dimethylamino)acrylate
924-99-2, 1117-37-9, 114894-59-6

ethyl 3-(dimethylamino)acrylate

N-[(2E)-1-(difluoromethyl)-3-(dimethylamino)-2-(ethoxycarbonyl)prop-2-en-1-ylidene]-N-methylmethanaminium tetrafluoroborate
1009318-76-6

N-[(2E)-1-(difluoromethyl)-3-(dimethylamino)-2-(ethoxycarbonyl)prop-2-en-1-ylidene]-N-methylmethanaminium tetrafluoroborate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.5h; Inert atmosphere;
Stage #2: ethyl 3-(dimethylamino)acrylate In dichloromethane at 20℃; for 2h; Product distribution / selectivity; Inert atmosphere;
100%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

methyl 3-methoxyprop-2-enoate
34846-90-7

methyl 3-methoxyprop-2-enoate

N-[(2E)-1-(difluoromethyl)-3-methoxy-2-(methoxycarbonyl)prop-2-en-1-ylidene]-N-methyl-methanaminium tetrafluoroborate
1009318-81-3

N-[(2E)-1-(difluoromethyl)-3-methoxy-2-(methoxycarbonyl)prop-2-en-1-ylidene]-N-methyl-methanaminium tetrafluoroborate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.5h; Inert atmosphere;
Stage #2: methyl 3-methoxyprop-2-enoate In dichloromethane at 20℃; for 2h; Inert atmosphere;
100%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

difluoromethyl lactate

difluoromethyl lactate

A

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

Difluoroacetic acid N,N-dimethylamide

B

difluoromethyl 2-fluoropropionate

difluoromethyl 2-fluoropropionate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; difluoromethyl lactate at 10 - 80℃; for 2h;
Stage #2: With N-pyrazolyl-N-cyclohexyl-N-ethylamine at 0℃;
A n/a
B 98.95%
methyl lactate
547-64-8

methyl lactate

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

A

methyl 2-fluoropropanoate
2366-56-5

methyl 2-fluoropropanoate

B

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

Difluoroacetic acid N,N-dimethylamide

Conditions
ConditionsYield
Stage #1: methyl lactate; 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine at 10 - 40℃; for 5h;
Stage #2: With triethylamine at 0℃;
A 98.92%
B n/a
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

trifluoroethyl lactate

trifluoroethyl lactate

A

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

Difluoroacetic acid N,N-dimethylamide

B

2-trifluoroethyl fluoropropionate

2-trifluoroethyl fluoropropionate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; trifluoroethyl lactate at 10 - 100℃; for 1h;
Stage #2: With N-piperidin-1-yl-N-pyrid-1-yl-N-ethylamine at 0℃;
A n/a
B 98.85%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

trifluoropropyl lactate

trifluoropropyl lactate

A

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

Difluoroacetic acid N,N-dimethylamide

B

trifluoropropyl 2-fluoropropionate

trifluoropropyl 2-fluoropropionate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; trifluoropropyl lactate at 10 - 60℃; for 3h;
Stage #2: With N-cyclohexyl-N-cyclopentyl-N-ethylamine at 0℃;
A n/a
B 97.52%
ethyl 2-hydroxypropionate
97-64-3, 2676-33-7

ethyl 2-hydroxypropionate

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

A

ethyl 2-fluoropropionate
349-43-9

ethyl 2-fluoropropionate

B

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

Difluoroacetic acid N,N-dimethylamide

Conditions
ConditionsYield
Stage #1: ethyl 2-hydroxypropionate; 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine at 10 - 50℃; for 4h;
Stage #2: With dmap at 0℃;
A 96.62%
B n/a
2-Methyl-2-<β-dimethylamino-vinyl>-1,3-dioxolan
118800-67-2

2-Methyl-2-<β-dimethylamino-vinyl>-1,3-dioxolan

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

methylhydrazine
60-34-4

methylhydrazine

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxolan-2-yl)-1H-pyrazole

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxolan-2-yl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 2-Methyl-2-<β-dimethylamino-vinyl>-1,3-dioxolan; 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride In tetrahydrofuran at 0 - 20℃; for 2.5h;
Stage #2: methylhydrazine In tetrahydrofuran at 5 - 20℃; for 2.5h;
93.6%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

C7H13NO2

C7H13NO2

methylhydrazine
60-34-4

methylhydrazine

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxetan-2-yl)-1H-pyrazole

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxetan-2-yl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; C7H13NO2 With boron trifluoride In acetonitrile at 20℃; for 2.5h;
Stage #2: methylhydrazine In acetonitrile at 5 - 20℃; for 2.5h; Temperature;
93.3%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

methylhydrazine
60-34-4

methylhydrazine

3-dimethylaminoacrolein
927-63-9

3-dimethylaminoacrolein

3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carbaldehyde
1094484-55-5

3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carbaldehyde

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; 3-dimethylaminoacrolein With boron trifluoride In acetonitrile for 2.5h;
Stage #2: methylhydrazine In acetonitrile at 5 - 20℃; for 2.5h;
92.8%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

C9H17NO2

C9H17NO2

methylhydrazine
60-34-4

methylhydrazine

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxan-2-yl)-1H-pyrazole

3-(difluoromethyl)-1-methyl-4-(2-methyl-1,3-dioxan-2-yl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; C9H17NO2 With boron trifluoride In acetonitrile at 0 - 30℃; for 2.5h;
Stage #2: methylhydrazine In acetonitrile at 5 - 30℃; for 2.5h;
91.9%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

C7H13NO2

C7H13NO2

methylhydrazine
60-34-4

methylhydrazine

3-(difluoromethyl)-1-methyl-4-(1,3-dioxolan-2-yl)-1H-pyrazole

3-(difluoromethyl)-1-methyl-4-(1,3-dioxolan-2-yl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; C7H13NO2 With boron trifluoride In tetrahydrofuran at 0 - 20℃; for 2.5h;
Stage #2: methylhydrazine In tetrahydrofuran at 5 - 20℃; for 2.5h; Temperature; Solvent;
91.6%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

4-dimethylamino-3-buten-2-one
1190-91-6

4-dimethylamino-3-buten-2-one

methylhydrazine
60-34-4

methylhydrazine

1-(3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)ethan-1-one

1-(3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)ethan-1-one

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; 4-dimethylamino-3-buten-2-one With boron trifluoride In acetonitrile for 2.5h;
Stage #2: methylhydrazine In acetonitrile at 5 - 20℃; for 2.5h;
90.3%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

methyl 3-methoxyprop-2-enoate
34846-90-7

methyl 3-methoxyprop-2-enoate

1-benzylidene-2-methylhydrazine
13466-29-0

1-benzylidene-2-methylhydrazine

methyl 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylate

methyl 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; methyl 3-methoxyprop-2-enoate With boron trifluoride diethyl etherate In acetonitrile at 25 - 70℃; Inert atmosphere;
Stage #2: 1-benzylidene-2-methylhydrazine In toluene; acetonitrile at 25℃; for 0.75h;
Stage #3: With hydrogenchloride In water; toluene; acetonitrile for 3h; Reflux;
89%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

ethyleneglycoldi(3-N,N-dimethylaminopropyl)acrylate

ethyleneglycoldi(3-N,N-dimethylaminopropyl)acrylate

methylhydrazine
60-34-4

methylhydrazine

ethylene glycol bis((3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)carboxylate)

ethylene glycol bis((3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)carboxylate)

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; ethyleneglycoldi(3-N,N-dimethylaminopropyl)acrylate With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 2h;
Stage #2: methylhydrazine In acetonitrile at 20℃; for 2h; Reagent/catalyst; Solvent; Temperature;
89%
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.5h;
Stage #2: ethyleneglycoldi(3-N,N-dimethylaminopropyl)acrylate In dichloromethane at 20℃; for 2h;
Stage #3: methylhydrazine In acetonitrile at 20℃; for 2h;
89%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

ethyl 4,4-difluoro-3-(phenylamino)but-2-enoate

ethyl 4,4-difluoro-3-(phenylamino)but-2-enoate

ethyl 2,4-bis(difluoromethyl)quinoline-3-carboxylate

ethyl 2,4-bis(difluoromethyl)quinoline-3-carboxylate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile for 0.25h; Inert atmosphere;
Stage #2: ethyl 4,4-difluoro-3-(phenylamino)but-2-enoate In acetonitrile at 20 - 50℃; for 19.25h; Inert atmosphere;
89%
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile for 0.25h; Inert atmosphere;
Stage #2: ethyl 4,4-difluoro-3-(phenylamino)but-2-enoate In acetonitrile at 20 - 50℃; for 19.25h;
89%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

N-(1,1-difluoropropan-2-ylidene)propan-2-amine

N-(1,1-difluoropropan-2-ylidene)propan-2-amine

3,5-bis(difluoromethyl)-1H-pyrazole
77614-79-0

3,5-bis(difluoromethyl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride In acetonitrile at 10 - 20℃; for 1h;
Stage #2: N-(1,1-difluoropropan-2-ylidene)propan-2-amine In acetonitrile at 40℃; for 13h;
Stage #3: With hydrogenchloride; hydrazine hydrate In water; acetonitrile at 40 - 60℃; for 5h; Reagent/catalyst;
87%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

hexane-1,6-diol bis(3-(N,N-dimethylamino)acrylate)

hexane-1,6-diol bis(3-(N,N-dimethylamino)acrylate)

methylhydrazine
60-34-4

methylhydrazine

hexylene glycol bis((3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)carboxylate)

hexylene glycol bis((3-(difluoromethyl)-1-methyl-1H-pyrazol-4-yl)carboxylate)

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine; hexylene glycol bis(3-(N,N-dimethylamino)acrylate) With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 2h;
Stage #2: methylhydrazine In acetonitrile at 20℃; for 2h;
86%
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.5h;
Stage #2: hexylene glycol bis(3-(N,N-dimethylamino)acrylate) In dichloromethane at 20℃; for 2h;
Stage #3: methylhydrazine In acetonitrile at 20℃; for 2h;
86%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

1-(1,1-difluoropropan-2-ylidene)-2-(diphenylmethylene)hydrazine

1-(1,1-difluoropropan-2-ylidene)-2-(diphenylmethylene)hydrazine

3,5-bis(difluoromethyl)-1H-pyrazole
77614-79-0

3,5-bis(difluoromethyl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With aluminum (III) chloride In acetonitrile at 10 - 20℃; for 1h;
Stage #2: 1-(1,1-difluoropropan-2-ylidene)-2-(diphenylmethylene)hydrazine In acetonitrile at 20℃;
Stage #3: With water In acetonitrile at 20 - 40℃; for 1h; Reagent/catalyst; Solvent; Temperature;
85%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

N-(2,2,2-trifluoro-1-methylethylidene)propan-2-amine
723294-90-4

N-(2,2,2-trifluoro-1-methylethylidene)propan-2-amine

3-(difluoromethyl)-5-(trifluoromethyl)-1H-pyrazole
1015780-64-9

3-(difluoromethyl)-5-(trifluoromethyl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile at 10 - 20℃; for 1h;
Stage #2: N-(2,2,2-trifluoro-1-methylethylidene)propan-2-amine In acetonitrile at 40℃; for 13h;
Stage #3: With hydrogenchloride; hydrazine hydrate In water; acetonitrile at 40 - 60℃; for 5h;
85%
(S)-Methyl lactate
27871-49-4

(S)-Methyl lactate

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

A

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

Difluoroacetic acid N,N-dimethylamide

B

(R)-2-fluoropropionic acid methyl ester
146805-74-5

(R)-2-fluoropropionic acid methyl ester

Conditions
ConditionsYield
at 20 - 30℃; for 12h;A n/a
B 83%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

1-(diphenylmethylene)-2-(1,1,1-trifluoropropan-2-ylidene)hydrazine

1-(diphenylmethylene)-2-(1,1,1-trifluoropropan-2-ylidene)hydrazine

3-(difluoromethyl)-5-(trifluoromethyl)-1H-pyrazole
1015780-64-9

3-(difluoromethyl)-5-(trifluoromethyl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.25h; Inert atmosphere;
Stage #2: 1-(diphenylmethylene)-2-(1,1,1-trifluoropropan-2-ylidene)hydrazine In acetonitrile at 20 - 50℃; for 24h; Inert atmosphere;
Stage #3: With hydrogenchloride In water; acetonitrile at 20℃; for 1h; Inert atmosphere;
83%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

bis(1,1-difluoropropan-2-ylidene)hydrazine

bis(1,1-difluoropropan-2-ylidene)hydrazine

3,5-bis(difluoromethyl)-1H-pyrazole
77614-79-0

3,5-bis(difluoromethyl)-1H-pyrazole

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile at 10 - 20℃; for 0.25h; Inert atmosphere;
Stage #2: bis(1,1-difluoropropan-2-ylidene)hydrazine In acetonitrile at 20℃; for 18h;
Stage #3: With hydrazine hydrochloride In water; acetonitrile at 40℃; for 4h;
81%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

phenylhydrazine
100-63-0

phenylhydrazine

sodium 3-ethoxy-1-(methylsulfonyl)-3-oxoprop-1-en-2-olate

sodium 3-ethoxy-1-(methylsulfonyl)-3-oxoprop-1-en-2-olate

ethyl 5-(difluoromethyl)-4-methylsulfonyl-2-phenylpyrazole-3-carboxylate

ethyl 5-(difluoromethyl)-4-methylsulfonyl-2-phenylpyrazole-3-carboxylate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With acetonitrile boron trifluoride complex In acetonitrile at 20℃; for 0.25h; Inert atmosphere;
Stage #2: sodium 3-ethoxy-1-(methylsulfonyl)-3-oxoprop-1-en-2-olate With pyridine In acetonitrile at 10 - 20℃; for 10h;
Stage #3: phenylhydrazine In acetonitrile at -10 - 20℃; for 4h;
81%
3H-chromene-2,4-dione
4438-85-1

3H-chromene-2,4-dione

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

3-difluoroacetylchromene-2,4-dione

3-difluoroacetylchromene-2,4-dione

Conditions
ConditionsYield
In dichloromethane at 20℃; for 16h; Inert atmosphere;80%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate
1700-88-5

ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate

ethyl 4-(difluoromethyl)-2-(trifluoromethyl)quinoline-3-carboxylate

ethyl 4-(difluoromethyl)-2-(trifluoromethyl)quinoline-3-carboxylate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile for 0.25h; Inert atmosphere;
Stage #2: ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate With sulfuric acid In acetonitrile at 20 - 50℃; for 19.25h; Inert atmosphere;
80%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate

ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate

ethyl 4-(difluoromethyl)-2-(trifluoromethyl)quinoline-3-carboxylate

ethyl 4-(difluoromethyl)-2-(trifluoromethyl)quinoline-3-carboxylate

Conditions
ConditionsYield
Stage #1: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine With boron trifluoride diethyl etherate In acetonitrile for 0.25h; Inert atmosphere;
Stage #2: ethyl 4,4,4-trifluoro-3-(phenylamino)but-2-enoate In acetonitrile at 20 - 50℃; for 19.25h;
80%
1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine
1550-50-1

1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine

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 hydride In ethanol at 20℃; for 1h;
Stage #2: 1,1,2,2-tetrafluoro-N,N-dimethylethan-1-amine In ethanol at 30℃; for 2h; Product distribution / selectivity;
79%

N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine Specification

     N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine , with CAS no: 1550-50-1, is also known as Ethylamine,1,1,2,2-tetrafluoro-N,N-dimethyl- (6CI,8CI)  or 1,1,2,2-Tetrafluoro-N,N-dimethylethanamine .

     Its physical properties include the following items. The index of refraction is 1.324, molar refractivity is 24.881 cm3 and molar volume is 124.032 cm3. Besides, it has the polarizability 9.864×10-24cm3, surface tension 15.852 dyne/cm, enthalpy of vaporization 29.119 kJ/mol  and the vapour pressure 322.306 mmHg at 25°C. 

     N,N-Dimethyl-1,1,2,2-tetrafluoroethylamine is a kind of transparent liquid with no color, with a low ignition point; It is being used in many different ways, such as medicine, pesticide intermediates, and halogenation agent fluoride. You could convert the chemical data into molecular structure through the folllowing chainings:
SMILES:
FC(F)C(F)(F)N(C)C
InChI:
InChI=1/C4H7F4N/c1-9(2)4(7,8)3(5)6/h3H,1-2H3.

 

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