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4-Chloro-6-ethyl-5-fluoropyrimidine
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  • Name 4-Chloro-6-ethyl-5-fluoropyrimidine
  • EINECS604-010-1
  • CAS No. 137234-74-3
  • Density1.286 g/cm3
  • PSA25.78000
  • LogP1.83150
  • SolubilityN/A
  • Melting PointN/A
  • FormulaC6H6ClFN2
  • Boiling Point210.913 °C at 760 mmHg
  • Molecular Weight160.578
  • Flash Point81.358 °C
  • Transport InformationN/A
  • AppearanceN/A
  • Safety22-36/37/39-45
  • Risk Codes20/21/22-36/37/38
  • Molecular Structure
    Molecular Structure of 137234-74-3 (4-Chloro-6-ethyl-5-fluoropyrimidine)
  • Hazard Symbols20/21/22-36/37/38:;
  • Synonyms20/21/22-36/37/38:;
  • Article Data13

4-Chloro-6-ethyl-5-fluoropyrimidine Synthetic route

137234-87-8

6-ethyl-5-fluoropyrimidin-4(1H)-one

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In dichloromethane at 48℃; for 6h; Product distribution / selectivity; Industry scale; Heating / reflux;99%
With triethylamine; trichlorophosphate In dichloromethane for 5h; Product distribution / selectivity; Heating / reflux;90%
With triethylamine; trichlorophosphate In dichloromethane at 40℃; for 5.16667h; Reflux;
137234-87-8

6-ethyl-5-fluoro-4-hydroxypyrimidine

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

Conditions
ConditionsYield
Stage #1: 6-ethyl-5-fluoro-4-hydroxypyrimidine With triethylamine; trichlorophosphate In dichloromethane for 5.5h; Heating / reflux;
Stage #2: With hydrogenchloride; water In dichloromethane at 20℃;		95%
With triethylamine; trichlorophosphate In dichloromethane at 40℃; for 8h; Reflux;90%
With trichlorophosphate In N,N-dimethyl-formamide at 90℃; for 5h;90.2%
188416-35-5

3-(6-chloro-5-fluoropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol

A

86404-63-9

1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazolyl)ethanone

B

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

Conditions
ConditionsYield
With hydrogenchloride In water at 60 - 70℃; Temperature; Reagent/catalyst; Solvent;A 88.4%
B n/a
137234-87-8

6-Ethyl-5-fluoropyrimidin-4(3H)-one

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

Conditions
ConditionsYield
With trichlorophosphate Heating;
759-67-1

2-fluoro-3-oxopentanoic acid ethyl ester

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1) MeONa, MeOH
2: POCl3 / Heating
View Scheme
Multi-step reaction with 2 steps
1: sodium methylate / methanol / 20 h / 15 °C
2: trichlorophosphate / 3 h / 60 °C
View Scheme
137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

188416-28-6

1-(4-chloro-5-fluoropyrimidin-6-yl)bromoethane

Conditions
ConditionsYield
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In dichloromethane at 55℃; for 16h; Temperature;98%
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In dichloromethane for 12h; Reflux;95.1%
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In dichloromethane for 12h; Reflux;95.1%
106-54-7

p-Chlorothiophenol

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

1112937-23-1

4-(4-chloro-phenylsulfanyl)-6-ethyl-5-fluoropyrimidine

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In acetonitrile at 10 - 20℃; for 2h;96%
137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

4892-02-8

Methyl thiosalicylate

1258386-27-4

methyl 2-(6-ethyl-5-fluoropyrimidin-4-yl-sulfanyl)benzoate

Conditions
ConditionsYield
Stage #1: Methyl thiosalicylate With sodium hydride In tetrahydrofuran at 5℃; for 0.666667h;
Stage #2: 4-chloro-6-ethyl-5-fluoropyrimidine In tetrahydrofuran at 20 - 25℃;		96%
108-98-5

thiophenol

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

1112937-27-5

4-(phenylsulfanyl)-6-ethyl-5-fluoropyrimidine

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In acetonitrile at 10℃; for 2h;95%

(3-(3-phenylpropyl)piperidin-3-yl)methanol

137234-74-3

4-chloro-5-fluoro-6-ethylpyrimidine

(1-(6-ethyl-5-fluoropyrimidin-4-yl)-3-(3-phenylpropyl)piperidin-3-yl)methanol

Conditions
ConditionsYield
With potassium carbonate In dimethyl sulfoxide at 120℃; for 17.3h; Sealed tube;81%

4-Chloro-6-ethyl-5-fluoropyrimidine Chemical Properties

Structure of 4-Chloro-6-ethyl-5-fluoropyrimidine (CAS NO.137234-74-3):

Empirical Formula: C6H6ClFN2
Molecular Weight: 160.5766 
Index of Refraction: 1.502
Molar Refractivity: 36.873 cm3
Molar Volume: 124.859 cm3
Polarizability: 14.618×10-24cm3
Surface Tension: 40.592 dyne/cm
Density: 1.286 g/cm3
Flash Point: 81.358 °C
Enthalpy of Vaporization: 42.896 kJ/mol
Boiling Point: 210.913 °C at 760 mmHg
Vapour Pressure: 0.272 mmHg at 25°C 
Product Categories: APIs & Intermediate;Pyrimidine
Synonyms of 4-Chloro-6-ethyl-5-fluoropyrimidine (CAS NO.137234-74-3): Pyrimidine,4-chloro-6-ethyl-5-fluoro-  

4-Chloro-6-ethyl-5-fluoropyrimidine Safety Profile

Risk Statements: 20/21/22-36/37/38 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 22-36/37/39-45 
S22:Do not breathe dust. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

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