Structure of 138006-41-4
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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. : | 138006-41-4 |
Formula : | C5H2BrCl2N |
M.W : | 226.89 |
SMILES Code : | BrC1=CC(=CN=C1Cl)Cl |
MDL No. : | MFCD06659484 |
InChI Key : | CDBHWRZEXFQNBI-UHFFFAOYSA-N |
Pubchem ID : | 12901596 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 41.96 |
TPSA ? Topological Polar Surface Area: Calculated from |
12.89 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.06 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
3.17 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
3.15 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.44 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.39 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.84 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.74 |
Solubility | 0.0416 mg/ml ; 0.000183 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.11 |
Solubility | 0.176 mg/ml ; 0.000774 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.12 |
Solubility | 0.0174 mg/ml ; 0.0000766 mol/l |
Class? Solubility class: Log S scale |
Moderately 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) |
Yes |
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 |
-5.43 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 |
1.0 |
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 |
1.0 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) |
1.76 |
* 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 |
---|---|---|
81.76 g (89%) | With trichlorophosphate; In N,N-dimethyl-formamide; | EXAMPLE 3 3-Bromo-2,5-dichloropyridine To a solution of 3-bromo-5-chloropyridin-2-one (84.3 g, 0.404 mol) in DMF (100 mL) was added POCl3 (56.5 mL, 0.61 mol) via dropping funnel over 3 hours at room temperature. The resulting black solution was then heated to 70 C. and allowed to stir for 3 days. After cooling to room temperature, the solution was poured into 1 L of ice/water, filtered, and the solid dried in a vacuum oven to provide 81.76 g (89%) of the desired 3-bromo-2,5-dichloropyridine as an off-white solid, m.p. 39-41 C.: IR(CHCl3) 3867, 3663, 2989, 2734, 1812, 1606, 1547, 1400, 1366, 1230, 1155, 1129, 1074, 1027, 894, 658, 563 cm-1; 1 H NMR (300 MHz, CDCl3) delta 8.0 (d, 1H, J=2.2 Hz), 8.35 (d, 1H, J=2.2 Hz); 13 C NMR (CDCl3) delta 120.43, 130.74, 141.46, 146.64, 148.99; exact mass calculated for C5 H2 NBrCl2 =224.8748; high resolution mass spec. 224.8764. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; carbon dioxide; In petroleum; di-isopropyl ether; water; | Reference Example 9 A solution of <strong>[138006-41-4]3-bromo-2,5-dichloropyridine</strong> (10g) in diisopropyl ether was added dropwise to a stirred solution of n-butyllithium (2.5 M in hexanes, 17.7ml) in diisopropyl ether at -70oC under an inert atmosphere so that the reaction temperature did not exceed -68oC. An excess of solid carbon dioxide was then added to the suspension and the mixture was stirred for 2 hours (excess carbon dioxide evaporates, temperature reaches 10oC.). Ice/water was added, the mixture was stirred. The layers were separated. The aqueous layer was acidified to pH 2 with concentrated hydrochloric acid. The resulting precipitate was extracted into diethyl ether. The ether extracts were washed with water, dried (magnesium sulphate) and evaporated to yield a solid which was triturated in light petroleum to yield 2,5-dichloronicotinic acid as a cream solid (7.04g), m.p. 160-162oC. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; In hexane; di-isopropyl ether; at -78℃; for 0.5h; | To a stirred solution of nBuLi (1.6 M in hexane, 10.4 mL, 16.6 mL) in diisopropyl ether (30 mL) was added <strong>[138006-41-4]3-bromo-2,5-dichloropyridine</strong> (3.78 g, 16.6 mmol) in diisopropylether (10 mL) slowly at -78 0C. The resulting suspension was treated with 2-methoxy-5-vinylisonicotinaldehyde (1.36 g, 8.33 mmol) in diisopropylether (10 mL) and allowed to stir for 30 min at -78 0C followed by warming to room temperature. The mixture was diluted with EtOAc, washed with water and brine, dried (Na2SO4), concentrated, and purified by flash chromatography to afford the title compound. 1H NMR (600 MHz, CDCl3) delta 8.32 (d, IH); 8.25 (s, IH); 7.69 (d, IH); 6.71 (dd, IH); 6.68 (s, IH); 6.21 (s, IH); 5.57 (dd, IH); 5.30 (dd, IH); 3.95 (s, 3H). | |
With n-butyllithium; In hexane; di-isopropyl ether; at -78℃; for 0.5h; | Step 3: (2,5-dichloropyridin-3-yl)(2-methoxy-5-vinylpyridin-4-yl)methanol; To a stirred solution of nBuLi (1.6 M in hexane, 10.4 mL, 16.6 mL) in diisopropyl ether (30 mL) was added <strong>[138006-41-4]3-bromo-2,5-dichloropyridine</strong> (3.78 g, 16.6 mmol) in diisopropylether (10 mL) slowly at -78 0C. The resulting suspension was treated with 2-methoxy-5-vinylisonicotinaldehyde (1.36 g, 8.33 mmol) in diisopropylether (10 mL) and allowed to stir for 30 min at -78 0C followed by warming to room temperature. The mixture was diluted with EtOAc, washed with water and brine, dried (Na2SO4), concentrated, and purified by flash chromatography to afford the title compound. 1H NMR (600 MHz, CDCl3) delta 8.32 (d, IH); 8.25 (s, IH); 7.69 (d, IH); 6.71 (dd, IH); 6.68 (s, IH); 6.21 (s, IH); 5.57 (dd, IH); 5.30 (dd, IH); 3.95 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; In tetrahydrofuran; hexane; di-isopropyl ether; at -78℃; for 0.5h; | To a stirred solution of nBuLi (1.6 M in hexane, 5.5 mL, 8.8 mL) in diisopropyl ether (20 mL) was added <strong>[138006-41-4]3-bromo-2,5-dichloropyridine</strong> (2.0 g, 8.8 mmol) in diisopropylether (10 mL) slowly at - 78 0C. The resulting suspension was treated with 2-vinylnicotinaldehyde (1.2 g, 8.8 mmol) in THF (5 mL) and allowed to stir for 30 min at -78 0C followed by warming to room temperature. The mixture was diluted with EtOAc, washed with water and brine, dried (Na2SO4), concentrated, and purified by flash chromatography to afford the title compound. 1H NMR (600 MHz, CDCl3) delta 8.58 (dd, IH); 8.32 (d, IH); 7.83 (d, IH); 7.54 (dd, IH); 7.21 (dd, IH); 7.06 (dd, IH); 6.42 (dd, IH); 6.37 (br s, IH); 5.58 (dd, IH); 2.79 (br s, IH). LRMS (ESI) calc'd for (C13H10Cl2N2O) [M+H]+, 281.0; found 280.7. | |
With n-butyllithium; In tetrahydrofuran; hexane; di-isopropyl ether; at -78℃; for 0.5h; | Step 2: (2,5-dichloropyridin-3-yl)(2-vinylpyridin-3-yl)methanol; To a stirred solution of nBuLi (1.6 M in hexane, 5.5 mL, 8.8 mL) in diisopropyl ether (20 mL) was added 3-bromo-2,5-dichlororhoyridine (2.0 g, 8.8 mmol) in diisopropylether (10 mL) slowly at - 78 0C. The resulting suspension was treated with 2-vinylnicotinaldehyde (1.2 g, 8.8 mmol) in THF (5 mL) and allowed to stir for 30 min at -78 0C followed by warming to room temperature. The mixture was diluted with EtOAc, washed with water and brine, dried (Na2SO4), concentrated, and purified by flash chromatography to afford the title compound. 1H NMR (600 MHz, CDCl3) delta 8.58 (dd, IH); 8.32 (d, IH); 7.83 (d, IH); 7.54 (dd, IH); 7.21 (dd, IH); 7.06 (dd, IH); 6.42 (dd, IH); 6.37 (br s, IH); 5.58 (dd, IH); 2.79 (br s, IH). LRMS (ESI) calc'd for (C13HiOCl2N2O) [M+H]+, 281.0; found 280.7. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydride; In N,N-dimethyl-formamide; at 100℃; for 0.75h;Microwave irradiation; | In a microwave tube NaH (60% in paraffin. 56 mg. 1.4 mmol) was washed with hexane and 3-bromo-2.5-dichloro-pyridine (245 mg. 1.08 mmol) in dry DMF (2 mL) were added. To this suspension BnOH (123 muL. 1.23 mmol) in dry DMF (1 mL) was dropped carefully. The reaction mixture was stirred 15 min until the formation of hydrogen has ceased. The tube was sealed and stirred at 100 C in a microwave reactor for 30 min. After removal of the solvent in vacuo the residue was partioned between water (10 mL) and DCM (10 mL) and extracted with DCM (3 x 10 mL). The combined organic fractions were washed with brine, dried overNa2SO4. filtered and concentrated in vacuo. The resulting title compound was used for the next reaction without purification. GC-MS (m/z): 297 [M+] . |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A solution of 2-te/f-butyl glycolate (437 mg; 3.31 mmol) in anhydrous THF (5 ml.) was treated with NaH (159 mg; 3.97 mmol) and stirred at RT for 10 minutes before treating with a solution of <strong>[138006-41-4]3-bromo-2,5-dichloropyridine</strong> (Matrix; 500 mg; 2.20 mmol) in anhydrous THF (5 ml_). The resulting reaction mixture was stirred for 22 hours. The reaction mixture was treated with a solution of 2-te/f-butyl glycolate (437 mg; 3.31 mmol) in THF (2 ml), then with NaH (159 mg; 3.97 mmol) and the reaction mixture was stirred for 16 h. The reaction was quenched with tBuOH, the sovent removed under reduced pressure affording a brown solid, which was purified by flash column chromatography (silica), eluting with cyclohexane containing increasing amounts of EtOAc, affording the title compound as a yellow sticky solid.1H NMR (300MHz, DMSOd6) delta [ppm] 8.33 (1 H, d, J= 2.3 Hz), 8.21 (1 H, d, J= 2.3 Hz), 4.86 (2H, s), 1.38 (9H, s). HPLC (Condition A) Rt 5.1 min. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
54.4% | With N-ethyl-N,N-diisopropylamine; In 1-methyl-pyrrolidin-2-one; at 160 - 165℃; for 0.25h; | Step Ml. A mixture of tert-butyl piperazine- l-carboxylate (186 mg, 0.996 mmol), 3-bromo- 2,5-dichloropyridine (226mg, 0.996 mmol), and DIEA (174 muEpsilon, 0.996 mmol) in NMP was heated at 160-165 C for 15 min. Silica gel column purification with 5% EtOAc in DCM gave tert-butyl 4-(3-bromo-5-chloropyridin-2-yl)piperazine-l-carboxylate (204mg, 0.542 mmol, 54.4 % yield). White solid. ^- MRCCDCls, 500MHz) delta 8.18 (1H, s), 7.80 (1H, s), 3.58 (4H,m), 3.26(4H,m), 1.49 (9H, s), |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With 18-crown-6 ether; potassium hydroxide; In toluene; at 120℃; for 4h; | A mixture of ethane-1, - o . g, .93 mmol), 3-bromo-2,5- dichloropyridine (2.47 g, 10.9 mmol), potassium hydroxide (1.22 g, 21.7 mmol), (1170) 1,4,7,10,13,16-hexaoxacyclooctadecane (1.15 g, 4.35 mmol), and toluene (50 mL) was stirred for four hours at 120 C. The mixture was cooled, and diluted with water. The mixture was extracted three times with dichloromethane. The combined organic layers were concentrated, and the resulting residue was purified by MPLC eluting with a gradient of 20-50% ethyl acetate in petroleum ether to afford 2-((3-bromo-5-chloropyridin-2-yl)oxy)ethan-1-ol (1.69 g, 61%) as a colorless oil. |
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