| Identification | More | [Name]
3,4-Difluorotoluene | [CAS]
2927-34-6 | [Synonyms]
3,4-DIFLUOROTOLUENE
3.4-Difluoro methyl benzene
3,4-Difluorobenzene
3,4-Difluorotoluene 99%
3,4-Difluorotoluene99%
3,4-DIFLUOROTOLUENE 98+% | [EINECS(EC#)]
622-971-5 | [Molecular Formula]
C7H6F2 | [MDL Number]
MFCD00075087 | [Molecular Weight]
128.12 | [MOL File]
2927-34-6.mol |
| Chemical Properties | Back Directory | [Appearance]
colorless to light yellow liqui | [Boiling point ]
110-113 °C(lit.) | [density ]
1.12 g/mL at 25 °C(lit.)
| [refractive index ]
n20/D 1.45(lit.)
| [Fp ]
77 °F
| [storage temp. ]
Flammables area | [form ]
Liquid | [color ]
Colorless to Light yellow | [Specific Gravity]
1.120 | [Water Solubility ]
Insoluble in water. | [InChIKey]
FZMPLKVGINKUJZ-UHFFFAOYSA-N | [CAS DataBase Reference]
2927-34-6(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
F | [Risk Statements ]
R10:Flammable. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S29:Do not empty into drains .
S33:Take precautionary measures against static discharges . | [RIDADR ]
UN 1993 3/PG 3
| [WGK Germany ]
3
| [Hazard Note ]
Flammable | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29039990 |
| Hazard Information | Back Directory | [Chemical Properties]
colorless to light yellow liqui | [Uses]
Used as pharmaceutical intermediate. | [Synthesis]
The general procedure for the synthesis of p-fluorotoluene, 2-fluorotoluene, 3-fluorotoluene, 2,4-difluorotoluene, 2,5-difluorotoluene, and 1,2-difluoro-4-methylbenzene from toluene is as follows: to a glass reactor equipped with a PTFE-lined magnetic stirring bar connected to a gas scrubber bottle, toluene (0.95-1.14 mmol), acetonitrile (1-2.5 mL/mmol toluene), and a boron trifluoride ethyl ether complex (1.3-1.6 mmol/mmol toluene) were added. mmol toluene), acetonitrile (1-2.5 mL/mmol toluene) and boron trifluoride ethyl ether complex (1.3-1.6 mmol/mmol toluene). The reaction solution was stirred at -25°C for 10-15 minutes, followed by the addition of xenon difluoride (1.2-1.3 mmol/mmol toluene) in batches. The reaction mixture was slowly warmed to 22 °C over 1 h and stirring was continued for 40-60 min. Upon completion of the reaction, hexafluorobenzene was added as an internal standard and the sample was removed for 19F NMR analysis (Method B). The reaction mixture was quenched with saturated aqueous sodium bicarbonate and extracted with dichloromethane (1-2 mL). The organic extract was dried over anhydrous magnesium sulfate and analyzed by 19F NMR and GC/MS (Procedure C). The major products are listed in the table and the remaining products are shown below (GC/MS data). | [References]
[1] Russian Journal of Organic Chemistry, 2016, vol. 52, # 10, p. 1400 - 1407
[2] Zh. Org. Khim., 2016, vol. 52, # 10, p. 1412 - 1419,8 |
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