![](/CAS/GIF/3096-56-8.gif)
2-Bromo-9-fluorenone synthesis
- Product Name:2-Bromo-9-fluorenone
- CAS Number:3096-56-8
- Molecular formula:C13H7BrO
- Molecular Weight:259.1
![3096-56-8.png 3096-56-8.png](/NewsImg/2022-09-22/6379946243635581257304780.jpg)
![9-Fluorenone](/CAS/GIF/486-25-9.gif)
486-25-9
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$5.00/25g
![2-Bromo-9-fluorenone](/CAS/GIF/3096-56-8.gif)
3096-56-8
352 suppliers
$10.00/1g
Yield:3096-56-8 99.2%
Reaction Conditions:
with potassium bromate;tetra-n-butyl-ammonium chloride;ammonium bromide in lithium hydroxide monohydrate at 75; for 6 h;Temperature;
Steps:
3 Embodiment 3 2-bromo-9-fluorenone, synthetic method, comprising the following steps:
1) 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%.
References:
CN104774141,2016,B Location in patent:Paragraph 0032-0036
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3096-56-8
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$10.00/1g
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3096-56-8
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486-25-9
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3096-56-8
352 suppliers
$10.00/1g