18013-97-3, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 18013-97-3, name is Diethyl 2,5-dibromoterephthalate, This compound has unique chemical properties. The synthetic route is as follows.
Compound A under nitrogen stream in 500 ml flask add (4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b: 4,5-b’]dithiophene, 15 g, 0.0259 mol) and add tetrahydrofuran(THF) was dissolved in 100 ml and slowly added 10.6 ml of n-BuLi (2.5M in hexane) at 0C ,It stirred at 50C for 1 hour 30 minutes. After stirring, the solution was cooled to -78C., and the dried ZnCl 2 solution was slowly added to the reaction solution and diethyl 2,5-bromotetraphthalate(diethyl 2,5-dibromoterephthalate, 3.93 g, 0.010364 mol) was added thereto, and the mixture was refluxed and stirred for 12 hours. After completion of the reaction and extracted with water and dichloromethane (MC),Dry the organic layer with MgSO4 and perform column chromatography(hexane: MC = 2: 1)Compound B (11.9 g, 84%) was obtained.
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Reference:
Patent; Gyeongsang National University Industry-Academic Cooperation Foundation; Kwon Sun-gi; Kim Yun-hui; Kim Myeong-jong; (22 pag.)KR2019/64410; (2019); A;,
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