3-Amino-2-chloro-6-iodopyridine Chemical Properties

Boiling point:

359.4±42.0 °C(Predicted)

Density 

2.139

storage temp. 

under inert gas (nitrogen or Argon) at 2–8 °C

pka

-0.12±0.10(Predicted)

Appearance

Light brown to brown Solid

Safety Information

HazardClass 

IRRITANT

HS Code 

2933399990

3-Amino-2-chloro-6-iodopyridine Usage And Synthesis

Uses

3-Amino-2-chloro-6-iodopyridine is a pyridine based building block used in organic synthesis.

Synthesis

Step a: Synthesis of 6-chloro-2-iodopyridin-3-amine To a solution of 6-chloropyridin-3-amine (10.0 g, 77.8 mmol) in ethanol (150 mL) was sequentially added silver sulfate (12.1 g, 38.9 mmol) and iodine (23.7 g, 93.4 mmol). The reaction mixture was stirred at 20 °C overnight. After completion of the reaction, the solvent was removed by distillation under reduced pressure. Water (100 mL) and ethyl acetate (200 mL) were added to the residue and the organic layer was separated. The aqueous layer was extracted three times with ethyl acetate (100 mL x 3). The organic layers were combined, dried with anhydrous sodium sulfate and concentrated under reduced pressure to obtain the crude product. The crude product was purified by silica gel column chromatography (eluent: petroleum ether/ethyl acetate=7:1) to afford 6-chloro-2-iodopyridin-3-amine (17.1 g, 86% yield). 1H NMR (DMSO, 300MHz) δ 7.16 (d, J = 8.4Hz, 1H), 7.01 (d, J = 8.4Hz, 1H), 5.57 (s, 2H).

References

[1] Patent: US2009/253736, 2009, A1. Location in patent: Page/Page column 23
[2] Patent: EP2826781, 2015, A1. Location in patent: Paragraph 0077-0078
[3] Patent: KR2015/9461, 2015, A. Location in patent: Paragraph 0195; 0196
[4] Patent: WO2013/10880, 2013, A1. Location in patent: Page/Page column 82
[5] Patent: EP2548876, 2013, A1. Location in patent: Paragraph 0275-0278

3-Amino-2-chloro-6-iodopyridine(400777-06-2)Related Product Information

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