Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 28342-75-8, name is 1,5-Dibromo-2,4-difluorobenzene, A new synthetic method of this compound is introduced below., COA of Formula: C6H2Br2F2
Under a nitrogen atmosphere, 1,5-dibromo-2,4-difluorobenzene (600.0 g),carbazole (81.1 g), potassium carbonate (91.0 g of) and NMP (300ml) was heated to 155 and It was stirred for 4 hours. The reaction mixture was cooled until room temperature,water was added to make the inorganic salt is dissolved, and the organics were extractedby suction filtration. After washing with ethyl acetate, dissolved in heated odichlorobenzene,and the short silica gel column (eluent: o-dichlorobenzene) by. Afterthe solvent was distilled off under reduced pressure, and then washed with ethylacetate, to obtain 9,9 ‘- (4,6-dibromo-1,3-phenylene) bis (9H-carbazole) (108.0 g of) .
The synthetic route of 28342-75-8 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Kwansei Gakuin School Corporation; Tian, Shanzuoci; Zhong, Zhongzongyiliang; Zhong, Daoguiyi; Ping, Jingdagui; Xiao, Yeyangping; Zhi, Lianyizhi; Ni, Jingping; Song, Xiawusi; Sheng, Tianlizhao; (405 pag.)CN105431439; (2016); A;,
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bromide – Wiktionary