- Preparation method of high purity 2-bromotriphenylene
-
The invention discloses a preparation method of high purity 2-bromotriphenylene. The preparation method comprises the following steps: step one, obtaining a first intermediate, second intermediate-(biphenyl-2-yl)-4,4,5,5-tetramethyl-1,3,2-boron dioxide; step two, drying the first intermediate, second intermediate-(biphenyl-2-yl)-4,4,5,5-tetramethyl-1,3,2-boron dioxide to obtain second intermediate-(4-bromophenyl)-1,1'-bibenzene; step three, adding the second intermediate-(4-bromophenyl)-1,1'-bibenzene, nitromethane, and iron trichloride into a container, heating to carry out reactions for three hours, cooling, adding water, and layering; condensing the organic phase until no water is left, adding ethanol, carrying out reflux, cooling to the room temperature, filtering, and drying to obtain the high purity 2-bromotriphenylene. The provided preparation method has the advantages of economy, simpleness, convenience, mild reaction conditions, good operation environment, and high yield.
- -
-
Paragraph 0020
(2017/03/14)
-