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ChemicalBook CAS DataBase List 4-Bromo-2,6-difluorobenzonitrile
123843-67-4

4-Bromo-2,6-difluorobenzonitrile synthesis

3synthesis methods
4-bromo-2, 6-difluorobenzonitrile is prepared by 3, 5-difluorobromobenzene as a basic raw material, through bromination diazotization and the synthetic liquid crystal intermediates 4-bromo-2 of sandermer reaction, 6-difluorobenzonilyile.
840481-49-4 Synthesis
4-BroMo-2,6-difluorobenzaMide, 96%

840481-49-4
35 suppliers
$171.09/1g

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Yield:123843-67-4 86.9%

Reaction Conditions:

with 1,3,5-trichloro-2,4,6-triazine in DMF (N,N-dimethyl-formamide) at 0; for 3 h;

Steps:

9

To a stirred solution of the above benzamide intermediate (9.4 g, 40 mmol) in DMF (15 mL) was added cyanuric chloride (7. 24 g, 40 mL) at 0 °C. The reaction was stirred at 0 °C for 3 h. Water was added slowly to the reaction and it was extracted with CH2C12 (3 x 100 ML). The solvent was washed with brine and dried over NA2S04. The solvent was removed to give 4-bromo-2, 6-DIFLUOROBENZONITRILE (7.57 g, 86.9%).

References:

WO2005/12283,2005,A1 Location in patent:Page/Page column 54-55

4-Bromo-2,6-difluorobenzonitrile Related Search:

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