5,7-Dihydro-7,7-dimethyl-indeno[2,1-b]carbazole Chemical Properties

Boiling point:

494℃

Density 

1.214

Flash point:

220℃

storage temp. 

Sealed in dry,Room Temperature

pka

17.16±0.40(Predicted)

Appearance

White to off-white Solid

Safety Information

HS Code 

2933998090

5,7-Dihydro-7,7-dimethyl-indeno[2,1-b]carbazole Usage And Synthesis

Synthesis

Under argon protection, N-(2-chlorophenyl)-9,9-dimethyl-9H-fluoren-2-amine (46.7 g, 14.6 mmol), Pd(OAc)2 (1.64 g, 7.32 mmol), HBF4 (3.62 g, 14.6 mmol), K2CO3 (60.5 g, 438 mmol) and dimethylformamide (50 mL) were were added to the reaction flask. The reaction mixture was stirred at 200°C for 12 hours. After completion of the reaction, the mixture was extracted with ethyl acetate. The organic layers were combined, dried with anhydrous MgSO4, filtered and the organic phase was concentrated. Purification by column chromatography afforded the target product 5,7-dihydro-7,7-dimethylindeno[2,1-b]carbazole (35.17 g, 85% yield).

References

[1] Patent: CN108822020, 2018, A. Location in patent: Paragraph 0126; 0128; 0130
[2] Patent: CN106800555, 2018, B. Location in patent: Paragraph 0075; 0094; 0095
[3] Patent: US2016/130225, 2016, A1. Location in patent: Paragraph 0343; 0346
[4] Patent: WO2013/12297, 2013, A1. Location in patent: Paragraph 90; 93; 94
[5] Patent: WO2013/12296, 2013, A1. Location in patent: Paragraph 95; 98; 99

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