Structure of 63680-90-0
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 63680-90-0 |
Formula : | C3H5Cl2N3 |
M.W : | 154.00 |
SMILES Code : | NC1=CNN=C1Cl.Cl |
MDL No. : | MFCD01693693 |
InChI Key : | AXDDRARIOLEYKW-UHFFFAOYSA-N |
Pubchem ID : | 114019 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 8 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 34.97 |
TPSA ? Topological Polar Surface Area: Calculated from |
54.7 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.0 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.3 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.46 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.0 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.19 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.79 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.08 |
Solubility | 1.29 mg/ml ; 0.00839 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.05 |
Solubility | 1.38 mg/ml ; 0.00893 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.44 |
Solubility | 5.59 mg/ml ; 0.0363 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.32 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
2.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.71 |
* 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 |
---|---|---|
79% | With caesium carbonate; In N,N-dimethyl-formamide; at 70℃; for 12h; | Example 19Preparation of 3-chloro-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amineTo a stirred solution of 5-chloro-1H-pyrazol-4-amine, HCl (2 g, 12.99 mmol) and cesium carbonate (8.89 g, 27.3 mmol) in DMF (13 mL) was added <strong>[71902-33-5]3,5-difluoropyridine</strong> (1.794 g, 15.58 mmol) and the mixture heated at 70° C. for 12 h.The mixture was cooled to room temperature and filtered.The solids were washed with copious amount of ethyl acetate.The filtrates was washed with brine, dried over anhydrous MgSO4 and concentrated in vacuo to give a brown solid.This solid was dissolved in ethyl acetate and the resulting solution was saturated with hexanes to precipitate 3-chloro-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine (2.31 g, 10.32 mmol, 79percent yield) as a brown solid: 1H NMR (400 MHz, DMSO-d6) delta 8.89-8.82 (m, 1H), 8.45 (d, J=2.5 Hz, 1H), 8.07 (d, J=10.4 Hz, 1H), 7.94 (s, 1H), 4.51 (s, 2H); EIMS (m/z) 213 ([M+1]+).3-Bromo-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine was prepared from the corresponding pyrazole as described in Example 19: mp 164-165° C.; 1H NMR (400 MHz, CDCl3) delta 8.65 (d, J=1.7 Hz, 1H), 8.36 (d, J=2.5 Hz, 1H), 7.76 (dd, J=5.9, 3.6 Hz, 1H), 7.48 (s, 1H), 3.22 (s, 2H). |
79% | With caesium carbonate; In N,N-dimethyl-formamide; at 70℃; for 12h; | Example 19 Preparation of 3-chloro-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine To a stirred solution of 5-chloro-1H-pyrazol-4-amine, HCl (2 g, 12.99 mmol) and cesium carbonate (8.89 g, 27.3 mmol) in DMF (13 mL) was added <strong>[71902-33-5]3,5-difluoropyridine</strong> (1.794 g, 15.58 mmol) and the mixture heated at 70° C. for 12 h. The mixture was cooled to room temperature and filtered. The solids were washed with copious amount of ethyl acetate. The filtrates was washed with brine, dried over anhydrous MgSO4 and concentrated in vacuo to give a brown solid. This solid was dissolved in ethyl acetate and the resulting solution was saturated with hexanes to precipitate 3-chloro-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine (2.31 g, 10.32 mmol, 79percent yield) as a brown solid: 1H NMR (400 MHz, DMSO-d6) delta 8.89-8.82 (m, 1H), 8.45 (d, J=2.5 Hz, 1H), 8.07 (d, J=10.4 Hz, 1H), 7.94 (s, 1H), 4.51 (s, 2H); EIMS (m/z) 213 ([M+1]+). 3-Bromo-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine was prepared from the corresponding pyrazole as described in Example 19: mp 164-165° C.; 1H NMR (400 MHz, CDCl3) delta 8.65 (d, J=1.7 Hz, 1H), 8.36 (d, J=2.5 Hz, 1H), 7.76 (dd, J=5.9, 3.6 Hz, 1H), 7.48 (s, 1H), 3.22 (s, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79% | With caesium carbonate; In N,N-dimethyl-formamide; at 70℃; for 12h; | To a stirred solution of 5-chloro-1H-pyrazol-4-amine, HCl (2 g, 12.99 mmol) and cesium carbonate (8.89 g, 27.3 mmol) in DMF (13 mL) was added <strong>[71902-33-5]3,5-difluoropyridine</strong> (1.794 g, 15.58 mmol) and the mixture heated at 70° C. for 12 h. The mixture was cooled to room temperature and filtered. The solids were washed with copious amount of ethyl acetate. The filtrates was washed with brine, dried over anhydrous MgSO4 and concentrated in vacuo to give a brown solid. This solid was dissolved in ethyl acetate and the resulting solution was saturated with hexanes to precipitate 3-chloro-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-amine (2.31 g, 10.32 mmol, 79percent yield) as a brown solid: 1H NMR (400 MHz, DMSO-d6) delta 8.89-8.82 (m, 1H), 8.45 (d, J=2.5 Hz, 1H), 8.07 (d, J=10.4 Hz, 1H), 7.94 (s, 1H), 4.51 (s, 2H); EIMS (m/z) 213 ([M+1]+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; triethylsilane; 5% palladium on Al2O3; In ethanol; water; at 15℃; for 72h;Inert atmosphere; | Example 1 3-chloro-1H-pyrazol-4-amine hydrochloride (1a) A 1000-mL, multi-neck cylindrical jacketed reactor, fitted with a mechanical stirrer, temperature probe and nitrogen (N2) inlet, was charged with 4-nitropyrazole (50.0 g, 429 mmol) and palladium on alumina (5 wt %, 2.5 g). Ethanol (150 mL) was added, followed by a slow addition of concentrated hydrochloric acid (37 wt %, 180 mL). The reaction was cooled to 15 C., and triethylsilane (171 mL, 1072 mmol) was added slowly via addition funnel over 1 hour, while maintaining the internal temperature at 15 C. The reaction was stirred at 15 C. for 72 hours, after which the reaction mixture was filtered through a Celite pad and the pad was rinsed with warm ethanol (40 C., 2*100 mL). The combined filtrates were separated and the aqueous layer (bottom layer) was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was stirred at 20 C. for 1 hour and filtered. The filter cake was rinsed with acetonitrile (2*100 mL) and dried under vacuum at 20 C. to afford a white solid (?10:1 mixture of 1a and 1H-pyrazole-4-amine, 65.5 g, 99%): 1H NMR (400 MHz, DMSO-d6) delta 10.52 (bs, 3H), 8.03 (s, 1H) EIMS m/z 117 ([M]+). | |
With hydrogenchloride; triethylsilane; 5% palladium on Al2O3; In ethanol; water; at 15℃; for 73h;Inert atmosphere; | Example 1 3-chloro-1H-pyrazol-4-amine hydrochloride (1a) [0019] nitrogen (N2) inlet, was charged with 4-nitropyrazole (50.0 g, 429 mmol) and palladium on alumina (5 weight %, 2.5 g). Ethanol (150 mL) was added, followed by a slow addition of concentrated hydrochloric acid (37%, 180 mL). The reaction was cooled to 15 C., and triethylsilane (171 mL, 1072 mmol) was added slowly via addition funnel over 1 hour, while maintaining the internal temperature at 15 C. The reaction was stirred at 15 C. for 72 hours, after which the reaction mixture was filtered through a Celite pad and the pad was rinsed with warm ethanol (40 C., 2×100 mL). The combined filtrates were separated and the aqueous layer (bottom layer) was concentrated to 100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to 100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to 100 mL. Acetonitrile (200 mL) was added and the resulting suspension was stirred at 20 C. for 1 hour and filtered. The filter cake was rinsed with acetonitrile (2×100 mL) and dried under vacuum at 20 C. to afford a white solid (10:1 mixture of 1a and 1H-pyrazol-4-amine, 65.5 g, 99%): 1H NMR (400 MHz, DMSO-d6) delta 10.52 (bs, 3H), 8.03 (s, 1H) EIMS: m/z 117. | |
With hydrogenchloride; triethylsilane; Pd/Al2O3; In ethanol; water; at 15℃; for 73h; | Example 1 3-Chloro-1H-pyrazol-4-amine hydrochloride (1a) A 1000-mL, multi-neck cylindrical jacketed reactor, fitted with a mechanical stirrer, temperature probe and nitrogen (N2) inlet, was charged with 4-nitropyrazole (50.0 g, 429 mmol) and palladium on alumina (5 wt %, 2.5 g). Ethanol (150 mL) was added, followed by a slow addition of concentrated hydrochloric acid (37 wt %, 180 mL). The reaction was cooled to 15 C., and triethylsilane (171 mL, 1072 mmol) was added slowly via addition funnel over 1 hour, while maintaining the internal temperature at 15 C. The reaction was stirred at 15 C. for 72 hours, after which the reaction mixture was filtered through a Celite pad and the pad was rinsed with warm ethanol (40 C., 2*100 mL). The combined filtrates were separated and the aqueous layer (bottom layer) was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was concentrated to ?100 mL. Acetonitrile (200 mL) was added and the resulting suspension was stirred at 20 C. for 1 hour and filtered. The filter cake was rinsed with acetonitrile (2*100 mL) and dried under vacuum at 20 C. to afford a white solid (?10:1 mixture of 1a and 1H-pyrazol-4-amine, 65.5 g, 99%): 1H NMR (400 MHz, DMSO-d6) delta 10.52 (bs, 3H), 8.03 (s, 1H); EIMS m/z 117 ([M]+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; triethylsilane; Pd/Al2O3; In ethanol; water; at 15.0℃; for 73h;Inert atmosphere; | A 1000-mL, multi-neck cylindrical jacketed reactor, fitted with a mechanical stirrer, temperature probe and nitrogen inlet, was charged with 4-nitropyrazole (50.0 g, 429 mmol) and palladium on alumina (5 wt %, 2.5 g). Ethanol (150 mL) was added, followed by a slow addition of concentrated hydrochloric acid (37 wt %, 180 mL). The reaction was cooled to 15 C., and triethylsilane (171 mL, 1072 mmol) was added slowly via addition funnel over 1 hour, while maintaining the internal temperature at 15 C. The reaction was stirred at 15 C. for 72 hours, after which the reaction mixture was filtered through a Celite pad and the pad was rinsed with warm ethanol (40 C., 2×100 mL). The combined filtrates were separated and the aqueous layer (bottom layer) was concentrated to 100 mL. Acetonitrile (200 mL) was added and the resulting suspension was stirred at 20 C. for 1 hour and filtered. The filter cake was rinsed with acetonitrile (2×100 mL) and dried under vacuum at 20 C. to afford a white solid (10:1 mixture of 1a and 1H-pyrazol-4-amine, 65.5 g, 99%): 1H NMR (400 MHz, DMSO-d6) delta 10.52 (bs, 3H), 8.03 (s, 1H); EIMS m/z 117 ([M]+). |
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