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ChemicalBook CAS DataBase List 2,4-Dimethylbromobenzene
583-70-0

2,4-Dimethylbromobenzene synthesis

8synthesis methods
m-Xylene

108-38-3

2,4-Dimethylbromobenzene

583-70-0

General procedure for the synthesis of 2,4-dimethylbromobenzene from m-xylene: N-bromosuccinimide (NBS, 1.0 mmol) and Catalyst 1 (gold loading of 0.1 or 1 mol% of the substrate) were accurately weighed and added to a 10 mL sealed reaction vessel, followed by 1,2-dichloroethane (DCE, 2 mL) and m-xylene (1.0 mmol). The reaction mixture was stirred at a set temperature for a specified time. After completion of the reaction, the catalyst was separated using a magnet and the reaction solution was concentrated under reduced pressure and purified by column chromatography.

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Yield:583-70-0 97%

Reaction Conditions:

with N-Bromosuccinimide in 1,2-dichloro-ethane at 60; for 10 h;Sealed tube;

Steps:

2.6 Typical procedure for the bromination
General procedure: NBS (1.0 mmol) and catalyst 1 (0.1 or 1 mol % Au based on the substrate) were weighted into a 10 mL sealed vessel, and then DCE (2 mL) and the substrate (1.0 mmol) were added. The reaction was stirred at the required temperature for the specified time. After reaction, the catalyst was removed with a magnet, and the solution was concentrated under reduced pressure and purified by column chromatography.

References:

Li, Bai;Gao, Linfeng;Bian, Fengling;Yu, Wei [Tetrahedron Letters,2013,vol. 54,# 9,p. 1063 - 1066] Location in patent:supporting information

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