N,N'-Di-(4-methyl-phenyl)-benzidine Chemical Properties

Melting point:

240 °C

Boiling point:

562.5±45.0 °C(Predicted)

Density 

1.141

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

form 

powder to crystal

pka

1.83±0.50(Predicted)

color 

White to Light yellow

Safety Information

HS Code 

2921.59.8090

N,N'-Di-(4-methyl-phenyl)-benzidine Usage And Synthesis

Uses

N,N'-di-p-tolylbenzidine is used as a research compound and is a commonly used hole transport layer material in organic electroluminescent devices.

Synthesis

Example 2 The target compound N,N'-di-p-tolylbenzidine (structural formula (2)-p) was synthesized according to the following reaction scheme. The steps were as follows:(c1) 4,4'-diiodo-1,1'-biphenyl (35 g, 86 mmol), p-toluidine (92 g, 86 mmol), copper powder (2.7 g, 43 mmol) and potassium carbonate (12 g, 86 mmol) were added to a reactor, and the reaction was stirred for 24 hours at 170 °C. After completion of the reaction, tetrahydrofuran (400 ml) was added to the reaction mixture and the insoluble material was removed by filtration. The filtrate was concentrated under reduced pressure and the residue obtained was washed sequentially with ethyl acetate, hexane and acetonitrile. Finally, the resulting crystals were dried to give (c2) N,N'-bis(4-methylphenyl)benzidine (13 g, 40% yield).

References

[1] Organometallics, 2018, vol. 37, # 6, p. 989 - 1000
[2] Patent: US2007/149815, 2007, A1. Location in patent: Page/Page column 10

N,N'-Di-(4-methyl-phenyl)-benzidine(10311-61-2)Related Product Information

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• N,N'-BIS(4-(2,2-DIPHENYLETHEN-1-YL)PHENYL)-N,N'-BIS(4-METHYLPHENYL)BENZIDINE
• N,N'-DI(NAPHTHALENE-2-YL)-N,N'-DI(3-METHYL-PHENYL)-BENZIDINE