4,4'-Dibromo-2,2'-diiodobiphenyl

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H302：Gesundheitsschädlich bei Verschlucken.

• Sicherheit

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P305+P351+P338：BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.

4,4'-Dibromo-2,2'-diiodobiphenyl Chemische Eigenschaften,Einsatz,Produktion Methoden

• Verwenden

  4,4''-Dibromo-2,2’-diiodobiphenyl (CAS# 852138-89-7) is a useful building block, and is seen in the preparation of hybrid organic/inorganic heterofluorene polymers and in low band-gap polymers for use in photovoltaics.

• Synthese

  
  Synthesis of 4,4'-Dibromo-2,2'-diiodobiphenyl A solution of diamine (16.0 g, 46.8 mmol) and concentrated HCl (56.0 mL) in water (64.0 mL) was cooled to 0 C. Next, 8.0g (116 mmol) of NaNO2 in 40 mL of water was added dropwise to the diamine solution over a period of 30 min, keeping the temperature at 0 C. After the addition of NaNO2 was complete, the resulting mixture was stirred for an additional 30 min. and an aqueous solution of KI (77.7 g in 150 mL of water) at-5 C was added dropwise over 30 min. The reaction mixture was then stirred (by mechanical stirrer) for 1h at r.t and 3 h at 60 C, giving a dark brown solution. The solution was then cooled to 25 C and the brown precipitate was collected by filtration. The crude brown solid was then purified by column chromatography (silica gel, hexane). The title compound as a white solid (7.4 g, 28 % yield). 1H NMR (CDCl3): | (ppm) 7.04 (2H, d), 7.57 (2H, d), 8.11 (2H, s).

• Einzelnachweise

  [1] Journal of Materials Chemistry, 2011, vol. 21, # 32, p. 11800 - 11814
  [2] Journal of Materials Chemistry A, 2016, vol. 4, # 22, p. 8750 - 8754
  [3] Chemistry - An Asian Journal, 2015, vol. 10, # 10, p. 2134 - 2138
  [4] Journal of the American Chemical Society, 2005, vol. 127, # 21, p. 7662 - 7663
  [5] Organic Electronics: physics, materials, applications, 2018, vol. 59, p. 77 - 83

4,4'-Dibromo-2,2'-diiodobiphenyl Upstream-Materialien And Downstream Produkte

4,4'-Dibromo-2,2'-diiodobiphenyl Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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