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CAS No. : | 936247-35-7 | MDL No. : | MFCD18259798 |
Formula : | C5H3ClN2O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | XRSYKYYBXLVPAJ-UHFFFAOYSA-N |
M.W : | 174.54 | Pubchem ID : | 18765698 |
Synonyms : |
|
Num. heavy atoms : | 11 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 1 |
Num. H-bond acceptors : | 4.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 40.09 |
TPSA : | 78.94 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.06 cm/s |
Log Po/w (iLOGP) : | 0.88 |
Log Po/w (XLOGP3) : | 1.84 |
Log Po/w (WLOGP) : | 1.35 |
Log Po/w (MLOGP) : | 0.12 |
Log Po/w (SILICOS-IT) : | -0.53 |
Consensus Log Po/w : | 0.73 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.42 |
Solubility : | 0.665 mg/ml ; 0.00381 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.12 |
Solubility : | 0.133 mg/ml ; 0.000762 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -1.44 |
Solubility : | 6.29 mg/ml ; 0.0361 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 2.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.09 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
82% | at 20℃; | Example 15A 5-Chloro-2-nitropyridin-3-ol With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and, at 0° C., 24 ml of concentrated nitric acid were added slowly. The reaction was warmed to RT and stirred overnight. The mixture was stirred into an ice/water mixture and stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound, which were used without further purification for the next reaction. LC-MS (Method 1): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
82% | at 0 - 20℃; | Example 7A 5-Chloro-2-nitropyridin-3-ol With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and, at 0° C., 24 ml of concentrated nitric acid were added slowly. The reaction was warmed to RT and stirred overnight. The reaction mixture was stirred into an ice/water mixture and it was stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound, which were used without further purification for the next reaction. LC-MS (Method 2): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
82% | at 0 - 20℃; | Example 12A 5-Chloro-2-nitropyridin-3-ol With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and, at 0° C., 24 ml of concentrated nitric acid were added slowly. The reaction was warmed to RT, stirred overnight and then stirred into an ice/water mixture and stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound, which were used without further purification for the next reaction. LC-MS (Method 2): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
82% | at 0 - 20℃; | With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and 24 ml of concentrated nitric acid were added slowly at 0° C. The mixture was warmed to RT, stirred overnight and then stirred into an ice/water mixture and stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without further purification for the next reaction. LC-MS (Method 1): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H-NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H), 8.10 (d, 1H), 12.14 (br. 1H). |
82% | at 0 - 20℃; | With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and 24 ml of concentrated nitric acid were added slowly at 00 C. The reaction was warmed to RT, stirred overnight and then stirred into an ice/water mixture and stirred for another 30 mm. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without further purification for the next reaction.10524] LC-MS (Method 1): R=0.60 mm10525] MS (ESneg): mlz=172.9/174.9 (M—H)10526] ‘H-NMR (400 MHz, DMSO-d5): ö=7.71 (d, 1H);8.10 (d, 1H); 12.14 (bt 1H). |
82% | at 0 - 20℃; | With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and 24 ml of concentrated nitric acid were added slowly at 0° C. The reaction was warmed to RT, stirred overnight and then stirred into an ice/water mixture and stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without further purification for the next reaction. LC-MS (Method 2): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H-NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
82% | at 0 - 20℃; | With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulfuric acid, and 24 ml of concentrated nitric acid were added slowly at 0° C. The reaction was warmed to RT and stirred overnight. The mixture was stirred into an ice/water mixture and stirred for 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without further purification for the next reaction. LC-MS (Method 1): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H-NMR (400 Mhz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
82% | at 0 - 20℃; | With ice cooling, 30 g of 5-chloropyridin-3-ol (232mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and 24 ml of concentrated nitric acid were added slowly at 0° C. The reaction was warmed to RT and stirred overnight. The mixture was stirred into an ice/water mixture and stirred for 30 mm. The crystals were filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without thrther purification for the next reaction.10372] LC-MS (Method 2): R=0.60 mm10373] MS (ESneg): mlz=172.9/174.9 (M—H)j0374] ‘H-NMR (400 MHz, DMSO-d5): ö=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (bt 1H). |
74% | With sulfuric acid; nitric acid In water at 5 - 20℃; for 3 - 144 h; | 5-Chloro-3-pyridinol (15.3 mmol) is dissolved in concentrated H2SO4 (15 ml). At 5 0C concentrated nitric acid (0.9 ml) is added. The reaction mixture is allowed to warm to room temperature over 6 days. The reaction solution is pored onto ice (50 ml) and diluted with water (200 ml). The precipitate is filtered, washed with water and dried at 40 0C in vacuo. 5-Chloro-2-nitro-pyridine-3-ol is obtained as yellow powder; mp. 97°; LC- MS (method B): 1.35 min, 175.1 (M+H+).; 5-Chloro-3-pyridinol (382 mmol) is dissolved in concentrated H2SO4 (375 ml). At 5 0C concentrated nitric acid (25 ml) is added. The reaction is allowed to warm to room temperature over 3 hours. The reaction solution is pored onto ice water (5000 ml). The precipitate is filtered, washed with water and dried over night at 40 0C in vacuo. 5- Chloro-2-nitro-pyridine-3-ol is obtained as yellow powder in a yield of 74 percent. Mp.: 97 0C; LC-MS (Method B): 1.35 min, 175.1 (MH+). |
67% | at 5 - 20℃; for 3 h; | 5-chloropyridin-3-ol(2.00 g, 15.4 mmol) was dissolved in concentrated H2SO4(15 mL) at 5 °C. Concentrated nitric acid (1.0 mL) was then added. The reactionwas allowed to warm to room temperature over 3 hrs. The reaction solution waspoured onto ice water (25 mL). The resultant precipitate was filtered, washedwith water and dried overnight at 40 °C in vacuo to afford was obtained as ayellow powder, (1.80g, 67percent); H NMR (400 MHz, CDCI3) δ7.68 (d, 1H), 8.15 (d, 1H), 10.29 (s, 1H). |
33 g | at 0 - 20℃; | Example 7A 5-Chloro-2-nitropyridin-3-ol With ice cooling, 30 g of 5-chloropyridin-3-ol (232 mmol, 1 equivalent) were dissolved in 228 ml of concentrated sulphuric acid, and 24 ml of concentrated nitric acid were added slowly at 0° C. The reaction was warmed to RT, stirred overnight and then stirred into an ice/water mixture and stirred for another 30 min. The solid was filtered off, washed with cold water and air-dried. This gave 33 g (82percent of theory) of the title compound which was used without further purification for the next reaction. LC-MS (Method 1): Rt=0.60 min MS (ESneg): m/z=172.9/174.9 (M-H)- 1H-NMR (400 MHz, DMSO-d6): δ=7.71 (d, 1H); 8.10 (d, 1H); 12.14 (br. 1H). |
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