Structure of 19235-89-3
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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. : | 19235-89-3 |
Formula : | C6H3ClN2 |
M.W : | 138.55 |
SMILES Code : | C1=C(Cl)C=CN=C1C#N |
MDL No. : | MFCD06009833 |
InChI Key : | DYEZRXLVZMZHQT-UHFFFAOYSA-N |
Pubchem ID : | 693342 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 33.96 |
TPSA ? Topological Polar Surface Area: Calculated from |
36.68 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.45 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.53 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.61 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.4 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.98 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.39 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.16 |
Solubility | 0.967 mg/ml ; 0.00698 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.91 |
Solubility | 1.71 mg/ml ; 0.0123 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.7 |
Solubility | 0.278 mg/ml ; 0.002 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) |
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 |
-6.06 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 |
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) |
1.56 |
* 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 |
---|---|---|
76% | Step A Nitrile I (60 g, 0.42 mol) is dissolved in THF (1000 ml) in a 2 l three-necked flask fitted with stirrer and thermometer under an N2 protective-gas atmosphere and cooled to 0 C. by means of an ice bath. Commercially available MeMgl (200 ml of a 3 M solution in THF, 0.6 mmol) is slowly added over the course of about 45 min. A clear, dark solution initially forms. The dropwise addition rate of the MeMgl addition is adjusted so that the solution temperature in the reaction vessel is between 0-10 C. When all the Grignard reagent has been added, a green suspension is obtained, which is stirred at 0 C. for a further 2 h. The reaction mixture is then added to ice-water (1500 ml). 2 M HCl is added until the reaction mixture has an approx. pH2. The mixture is stirred for a further 15 min. and then extracted a number of times (addition of EtOAc and water). The combined organic phases are washed with aqueous saturated sodium chloride solution and dried using Na2SO4. All the solvents are removed by distillation under reduced pressure in a rotary evaporator, giving 66 g of yellow-brown oil as crude product. The crude product is purified by means of column chromatography (800 g of Si60, MTBE). The suitable fractions (characterised by TLC analysis) are combined. Removal of the solvents gives ketone II (51 g, 0.32 mol, 76% yield) as clear dark oil. LC-MS: tR=1.829 min (UV=220 nm), tR=1.842 min. (TIC, with [M+H]+=156); 1H NMR (300 MHz, CDCl3) δ 8.58 (d, 1H), 8.03 (dd, J=2.1, 0.4, 1H), 7.47 (dd, J=5.2, 2.1, 1H), 2.71 (d, J=3.2, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3.60 g (60%) | With hydrogenchloride; MeMgI; In benzene; | 2-Acetyl-4-chloropyridine: To a solution of 4-chloro-2-pyridinecarbonitrile (5.35 g, 38.6 mmol) in benzene (50 ml) and ether (50 ml) cooled to 0 C. was added dropwise over 20 min a 2M solution of MeMgI in ether (23 ml, 46.3 mmol). After 0.5 h, the mixture was allowed to warm to ambient temperature, and stirring continued for 2 h. The mixture was cooled to 0 C. and 2M aqueous HCl (100 ml) added. The mixture was made basic with saturated aqueous sodium bicarbonate (~80 ml) and the organic layer separated and dried (MgSO4). After removal of solvent, the residue was purified by flash chromatography eluding with ethyl acetate/hexane (1:5) to afford 3.60 g (60%) of 2-acetyl-4-chloropyridine. 1H-NMR (DMSO-d6) δ: 8.59 (1H, d, J=5.1 Hz), 8.04 (1H, d, J=1.8 Hz), 7.47 (1H, dd, J=1.8, 5.1 Hz), 2.72 (3H, s). |
3.60 g (60%) | With hydrogenchloride; MeMgI; In benzene; | 2-Acetyl-4-chloropyridine: To a solution of 4-chloro-2-pyridinecarbonitrile (5.35 g, 38.6 mmol) in benzene (50 ml) and ether (50 ml) cooled to 0 C was added dropwise over 20 min a 2M solution of MeMgI in ether (23 ml, 46.3 mmol). After 0.5 h, the mixture was allowed to warm to ambient temperature, and stirring continued for 2 hours. The mixture was cooled to 0 C and 2M aqueous HCl (100 ml) added. Themixture was made basic with saturated aqueous sodium bicarbonate (~80 ml) and the organic layer separated and dried (MgSO4). After removal of solvent, the residue was purified by flash chromatography eluding with ethyl acetate/hexane (1:5) to afford 3.60 g (60%) of 2-acetyl-4-chloropyridine. 1H-NMR (DMSO-d6) 8.59 (1 H, d, J=5.1 Hz), 8.04 (1 H, d, J=1.8 Hz), 7.47 (1 H, dd, J=1.8, 5.1 Hz), 2.72 (3 H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
660 mg | In tetrahydrofuran; at 0℃; for 2h; | To a mixture of A-4 (3 g, 21.65 mmol) in TI-IF (60 mL) was added bromo(methyl)magnesium (14.44 mL, 43.31 mmol) at 0C, then the mixture was stirred at 0C for 2 hours. The reaction mixture was added to ice-water (50 mL) and 2 M HCI (25 mL), stirred for 15 minutes, and extracted with EtOAc (50 mL x 2). The combined organic phase was washed with water (30 mL) and brine (30 mL), dried over Na2SO4, filtered and concentrated to give the crude product, which was purified by flash chromatography on silica gel (EtOAc in PE = 0% to 10% to 20%) to afford A-5 (660 mg, 3.31 mmol) as a solid. ‘HNMR (400MHz, CDCI3) oH = 8.59 (d, 1H), 8.04 (d, 1H), 7.48 (dd, 1H), 2.73 (s, 3H). LCMS Rt = 0.640 mm using Method B, MS ESI calcd. for C7H7CINO {M+Hj 156.0, found 155.8. |
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