Identification | More | [Name]
2-Chloro-5-methyl-3-nitropyridine | [CAS]
23056-40-8 | [Synonyms]
2-CHLORO-3-NITRO-5-METHYLPYRIDINE 2-CHLORO-3-NITRO-5-PICOLINE 2-CHLORO-5-METHYL-3-NITROPYRIDINE 6-CHLORO-5-NITRO-3-PICOLINE 2-Chloro-3,5-dimethyl-4-methoxypyridine 2-Chloro-5-methyl-3-nitropyridine 97% 2-CHLORO-3-NITRO-5-PICOLINE (2-CHLORO-5-METHYL-3-NITROPYRIDINE) | [EINECS(EC#)]
624-905-0 | [Molecular Formula]
C6H5ClN2O2 | [MDL Number]
MFCD02070020 | [Molecular Weight]
172.57 | [MOL File]
23056-40-8.mol |
Chemical Properties | Back Directory | [Appearance]
Beige powder | [Melting point ]
45-50 °C | [Boiling point ]
290.8±35.0 °C(Predicted) | [density ]
1.406±0.06 g/cm3(Predicted) | [storage temp. ]
under inert gas (nitrogen or Argon) at 2-8°C | [form ]
powder to crystal | [pka]
-2.20±0.10(Predicted) | [color ]
White to Orange to Green | [Sensitive ]
Hygroscopic | [BRN ]
138198 | [CAS DataBase Reference]
23056-40-8(CAS DataBase Reference) |
Safety Data | Back Directory | [Hazard Codes ]
Xn,Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . R21/22:Harmful in contact with skin and if swallowed . | [Safety Statements ]
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36:Wear suitable protective clothing . | [RIDADR ]
2811 | [WGK Germany ]
3 | [Hazard Note ]
Harmful | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
29333990 |
Hazard Information | Back Directory | [Chemical Properties]
Beige powder | [Synthesis]
a) General procedure for the synthesis of 2-chloro-5-methyl-3-nitropyridine: 5-methyl-3-nitropyridin-2-ol (5 g, 32.4 mmol) and benzyltrimethylammonium chloride (3.01 g, 16.2 mmol) were dissolved in acetonitrile, followed by addition of phosphorochloridic acid (9.0 ml, 97.2 mmol). The reaction mixture was stirred at 80 °C for 6 hours. After completion of the reaction, the mixture was cooled to room temperature and slowly poured into ice water to quench the reaction. The aqueous phase was extracted with dichloromethane and the organic layers were combined, washed with saturated brine solution and dried over anhydrous sodium sulfate. After filtration, the solvent was evaporated under reduced pressure to give the crude product. The crude product was purified by silica gel column chromatography using dichloromethane as eluent. The fraction containing the target compound was collected and concentrated under reduced pressure to give 2-chloro-5-methyl-3-nitropyridine as a yellow solid (5.39 g, 97% yield). The product was confirmed by 1H-NMR (CDCl3, 300 MHz) and mass spectrometry (ESI): 1H-NMR δ= 8.45 (d, 1H, J = 2.3Hz), 8.04 (d, 1H, J = 2.3Hz), 2.46 (s, 3H); MS (ESI) m/z: 173.0 ([M+H]+). | [References]
[1] Patent: US2011/28467, 2011, A1. Location in patent: Page/Page column 51 [2] Bioorganic and Medicinal Chemistry, 2015, vol. 23, # 5, p. 985 - 995 [3] Patent: EP2366691, 2011, A1. Location in patent: Page/Page column 9 [4] Patent: WO2015/73528, 2015, A1. Location in patent: Page/Page column 118 [5] Journal of the American Chemical Society, 1951, vol. 73, p. 3504 |
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