| Identification | More | [Name]
9,9-Dimethyl-9H-fluorene | [CAS]
4569-45-3 | [Synonyms]
9,9-DIMETHYLFLUORENE
9,9-Dimethyl-9H-fluorene
9,9-dimethyl-fluororene
9,9-Dimethylfluorene (purified by sublimation)
9,9'-Dimethylfluorenee | [EINECS(EC#)]
1312995-182-4 | [Molecular Formula]
C15H14 | [MDL Number]
MFCD00114670 | [Molecular Weight]
194.27 | [MOL File]
4569-45-3.mol |
| Safety Data | Back Directory | [Risk Statements ]
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 ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37/39:Wear suitable gloves and eye/face protection . | [HS Code ]
2902.90.9000 |
| Hazard Information | Back Directory | [Definition]
9,9-Dimethylfluorene is an organic electroluminescent material intermediate. The fluorene derivative is a kind of organic electroluminescent material commercialized at present, wherein 9, 9-dimethyl fluorene is an essential intermediate for synthesizing OLED material.
| [Synthesis]
The method comprises taking dimethyl carbonate as a methylating agent under alkaline substances and reacting with fluorene in an organic solvent system within a certain temperature range to prepare the 9,9-Dimethylfluorene. The method uses dimethyl carbonate as a methylating agent so that the reaction process is stabilized and the economy is greatly improved; meanwhile, the use of dimethyl carbonate avoids the use of low-boiling-point hypertoxic such as methyl iodide, methyl bromide, and the like, is environment-friendly, and the generated wastewater has single component and is convenient to treat. |
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