Other grades of this product :
| 2-Bromo-9-fluorenone Basic information |
| 2-Bromo-9-fluorenone Chemical Properties |
| Melting point | 146-148 °C (lit.) | | Boiling point | 392.8±21.0 °C(Predicted) | | density | 1.4633 (rough estimate) | | refractive index | 1.5130 (estimate) | | storage temp. | Sealed in dry,Room Temperature | | solubility | Solubility in other solvents, soluble in acetone. | | form | powder to crystal | | color | Light yellow to Yellow to Orange | | CAS DataBase Reference | 3096-56-8(CAS DataBase Reference) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-37/39 | | WGK Germany | 3 | | Hazard Note | Irritant | | HS Code | 29143990 |
| 2-Bromo-9-fluorenone Usage And Synthesis |
| Chemical Properties | yellow powder | | Uses | 2-Bromo-9-fluorenone, a functional material as an organic intermediate. It is the best liquid crystal material and is used as an intermediate for OLED. | | Application | 2-Bromo-9-fluorenone was used:as end-capping agent for poly(9,9-dialkylfluorene-2,7-diyl) derivativesin synthesis of 2-bromo-9-hydroxy-9-(2-biphenyl)fluorenein preparation of spirobifluorene ligandsin synthesis of altitudinal molecular motors which contain functional groups in their rotor partin synthesis of FB | | Synthesis | The synthesis of 2-Bromo-9-fluorenone is as follows：the 9-fluorenone (10mmol), the phase transfer catalyst (1.5mmol fourteen alkyl trimethyl ammonium chloride) and brominated aqueous ammonium solution (30 wt %, 25mmol ammonium bromide) mixing and heating system temperature to 75 °C, in 1h is divided into three time 11mmol potassium bromate, to three times the weight ratio of 1:3:1, to maintain the system temperature to continue reaction 3h, wherein the 9-fluorenone, ammonium bromide, the molar ratio of potassium bromate 1 : 2.5: 1.1 ; 9-fluorenone, and fourteen alkyl trimethyl ammonium chloride (phase-transfer catalyst) molar ratio of 1 : 0.15; 2) after the reaction, to room temperature, by adding 20% aqueous solution of sodium sulfite ( eliminates the bromine fluid ), is filtered, the filter cake washing water And dried to obtain yellow solid of 2-Bromo-9-fluorenone, the yield is 99.2%. | | Solubility in organics | 2-Bromo-9-fluorenone was 0.0526 (mole fraction) in 1,4-dioxane at 323.15 K and 0.0002 (mole fraction) in methanol at 278.15 K, respectively, and the solubility increased with the increase in temperature in all solvents. |
| 2-Bromo-9-fluorenone Preparation Products And Raw materials |
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