3-AMINO-4-PHENYLPYRIDINE Chemical Properties

Boiling point:

334.6±22.0 °C(Predicted)

Density 

1.133

storage temp. 

2-8°C(protect from light)

pka

6.33±0.18(Predicted)

Appearance

White to off-white Solid

Safety Information

HS Code 

2933399990

3-AMINO-4-PHENYLPYRIDINE Usage And Synthesis

Synthesis

General procedure for the synthesis of 3-amino-4-phenylpyridine from 3-nitro-4-phenylpyridine: 3-nitro-4-phenylpyridine (600 mg, 3.00 mmol) and 10% palladium-carbon catalyst (319 mg, 0.150 mmol) were suspended in methanol (20 mL). The reaction mixture was stirred for 3 h at room temperature under hydrogen atmosphere (1 atm). Upon completion of the reaction, the catalyst was filtered through a diatomaceous earth pad to remove the catalyst. The filtrate was concentrated under reduced pressure to give an off-white solid 3-amino-4-phenylpyridine (420 mg, 2.468 mmol, 82% yield). The structure of the product was confirmed by NMR hydrogen spectroscopy (400 MHz, DMSO-d6): δ 8.11 (s, 1H), 7.85 (d, J = 4.8 Hz, 1H), 7.54-7.47 (m, 4H), 7.45-7.38 (m, 1H), 7.00 (d, J = 4.5 Hz, 1H), 5.10 (br.s., 2H); liquid chromatography-mass spectrometry (ESI) showed m/z 171.1 [(M + H)+, calculated value C11H11N2 171.1].

References

[1] Journal of Heterocyclic Chemistry, 2001, vol. 38, # 1, p. 99 - 104
[2] Angewandte Chemie - International Edition, 2013, vol. 52, # 1, p. 304 - 309
[3] Angew. Chem., 2013, vol. 125, # 1, p. 322 - 327,6
[4] Patent: WO2018/98411, 2018, A1. Location in patent: Page/Page column 85

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