[1,1'-Biphenyl]-4,4'-dicarbonsure Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
White to light beige powder
Verwenden
Dendrimer building block.
Application
Biphenyl-4,4′-dicarboxylic acid can be used:
As a key component
In the synthesis of nematic aromatic polyesters which are valuable in
the development of liquid crystal polymers with potential applications
in electronics, optical devices automotive, and textiles.
As a
linker or ligand in the synthesis of metal-organic frameworks (MOFs) for
a wide range of potential applications in areas such as gas storage,
catalysis, sensing, and separation technology.
As a building
block in biomedical applications for the synthesis of various
pharmaceutical compounds and materials with biological activity. It can
also be utilized in the development of drug delivery systems and
biomaterials due to its chemical properties.
läuterung methode
The dicarboxylic acid is a white amorphous or microcrystalline substance which does not melt or sublime. It is best purified by precipitation of an aqueous alkaline solution with mineral acid, washing well with H2O and drying in vacuo at 100o. It is characterized by conversion to diphenyl-4,4’-dicarbonyl chloride (with PCl5 [Work J Chem Soc 1317 1940], or by phase transfer catalysis with SOCl2 + BuEt3N+Cl-in 1,2-dichloroethane [Burdett Synthesis 441 1991]) which crystallises from *C6H6 with m 184o. The di-acid chloride gives the dimethyl ester with MeOH, and has m 215-217o (plates from MeOH, m’s of 214o and 224o were also reported). The diethyl ester is similarly prepared with EtOH and has m 122o (from EtOH). [Beilstein 9 II 665, 9 III 4519, 9 IV 3563.]
[1,1'-Biphenyl]-4,4'-dicarbonsure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
