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ChemicalBook CAS DataBase List 2,5-DIBROMOBIPHENYL
57422-77-2

2,5-DIBROMOBIPHENYL synthesis

10synthesis methods
-

Yield: 98%

Reaction Conditions:

with tetrakis(triphenylphosphine) palladium(0);potassium carbonate in tetrahydrofuran;water at 70 - 90;Inert atmosphere;

Steps:


(1) Under the protection of nitrogen, 0.1 mol 2,5-dibromoiodobenzene, 0.1 mol phenylboronic acid, and 100 ml tetrahydrofuran (THF) were added into a 250 ml reaction flask. Then, 0.001 mol Pd(PPh3)4 and 20 ml of an aqueous 2M potassium carbonate solution were added to the reaction system. The reaction system was reacted at 70° C. to 90° C. for 10 to 24 h and cooled to room temperature naturally. The reaction solution was filtered. The filtrate was subjected to rotary evaporation under reduced pressure, and passed through a neutral silica gel column to obtain 2,5-dibromobiphenyl, with a HPLC purity of 99.25% and a yield of 98.0%.

References:

JIANGSU SUNERA TECHNOLOGY CO., LTD. US2021/163411, 2021, A1 Location in patent:Paragraph 0050-0051

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