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CAS No. : | 97941-89-4 | MDL No. : | MFCD13181782 |
Formula : | C5H5Cl2N3 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | CHGCWQGIACIHHI-UHFFFAOYSA-N |
M.W : | 178.02 | Pubchem ID : | 13492641 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P305+P351+P338 | UN#: | |
Hazard Statements: | H319 | Packing Group: | |
GHS Pictogram: |
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* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
49% | With hydrogenchloride; tin(ll) chloride; In water; at 80 - 100℃; for 0.5h; | 5-Chloro-3-nitropyridin-2-amine (2000.0 mg, 11.52 mmol) and SnCl2 (8740.0 mg, 46.09 mmol) were added in conc. HCl (20.0 mL) and then stirred at 80-100 C. for 0.5 hour. The reaction mixture was neutralized with saturated 1N NaOH aqueous solution (pH=7), and it was then extracted with EtOAc (200.0 mL). The organic layer was washed with brine, dried over anhydrous Na2SO4, filtered and then distilled under reduced pressure. The residue was purified by column chromatography (n-Hex:EtOAc=90:10) on silica. The fractions containing the product were collected and evaporated to obtain ivory solid compound of 5,6-dichloropyridin-2,3-diamine (1000.0 mg, 49%). [0523] 1H-NMR (300 MHz, DMSO-d6); δ: 6.80 (s, 1H), 6.04 (s, 2H), 5.11 (s, 2H) |
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