ChemicalBook CAS DataBase List 2,7-Dibromo-9,9-dimethylfluorene

2,7-Dibromo-9,9-dimethylfluorene synthesis

4synthesis methods

Product Name:2,7-Dibromo-9,9-dimethylfluorene
CAS Number:28320-32-3
Molecular formula:C15H12Br2
Molecular Weight:352.06

16433-88-8 Synthesis

16433-88-8
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28320-32-3
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Yield:28320-32-3 99%

Reaction Conditions:

with tetrabutylammomium bromide;sodium hydroxide in dimethyl sulfoxide at 20; for 5 h;

Steps:

1.2
Step2:Room temperature,2,7-dibromofluorene (9.72 g, 30 mmol) was added to the reactor.Tetra-n-butylammonium bromide (0.08g, 0.25mmol), methyl iodide (12.77g, 90mmol), 50% NaOH solution 10mL, DMSO 120mL,Ultrasound reaction for 5h,Then add 500mL water to stop the reaction, stirring, suction filtration, water washing,Drying gave intermediate 11-2 (10.46 g, 99%).

References:

Changchun Hai Purunsi Technology Co., Ltd.;Dong Xiuqin;Cai Hui CN108774175, 2018, A Location in patent:Paragraph 0071; 0072; 0074

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16433-88-8 Synthesis

16433-88-8
370 suppliers
$6.00/5g