Structure of 53312-80-4
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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. : | 53312-80-4 |
Formula : | C7H5FN2 |
M.W : | 136.13 |
SMILES Code : | N#CC1=CC=C(N)C=C1F |
MDL No. : | MFCD07368709 |
InChI Key : | FDUGOYTWYJZNNP-UHFFFAOYSA-N |
Pubchem ID : | 2783413 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 35.52 |
TPSA ? Topological Polar Surface Area: Calculated from |
49.81 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.21 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.06 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.71 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.22 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.5 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.34 |
Log S (ESOL):? ESOL: Topological method implemented from |
-1.8 |
Solubility | 2.18 mg/ml ; 0.016 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.7 |
Solubility | 2.73 mg/ml ; 0.0201 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.37 |
Solubility | 0.578 mg/ml ; 0.00425 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) |
Yes |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.38 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) |
1.37 |
* 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 |
---|---|---|
100% | Step A. Preparation of 4-amino-2-fluorobenzonitrile [00175] The mixture of <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (8.31 g, 50 mmol) and tin (II) chloride dihydrate (56.4 g, 250 mmol) in 250 mL of EtOAc was stirred at 25 °C overnight. LCMS (78109-084) indicated the reaction was completed. 25 mL of sat. K2CO3 was added to the reaction. The resulting mixture was stirred at room temperature for 2h and was followed by addition of lOOg of solid K2CO3. The mixture was stirred at room temperature for 2 hours. Solid was removed by filtration and further washed with EtOAc (50 mLx2). The filtrate was concentrated to yield 6.81 g (100percent) of 4-amino-2-fluorobenzonitrile as an off white solid. 1H NMR (400 MHz, CDCl3) delta ppm 4.30 (s, 2 H) 6.29 - 6.51 (m, 2 H) 7.27 - 7.40 (m, 1 H). MS (ESI) 137 (M+H). | |
96% | With iron; acetic acid; In ethyl acetate; for 2.0h;Heating / reflux; | A mixture of <strong>[34667-88-4]4-nitro-2-fluorobenzonitrile</strong> (1.83 g, 5 mmol) and iron (1.68 g, 6 mmol) in a mixture of acetic acid (40 ml) and ethyl acetate (40 ml) was refluxed for 2 hours. The solid was filtered off and the filtrate was washed with water and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, concentrated and chromatographed (dichloromethane:acetone, 95:5) to yield 4- amino-2-fluorobenzonitrile (54a) (0.653 g, 4.8 mmol, 96percent). |
96% | With hydrogen;palladium 10% on activated carbon; In ethanol; ethyl acetate; under 2585.81 Torr; for 1.0h; | To <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (8.5 g, 51.2 mmol) was added 10percent palladium on carbon (0.5 g) and EtOAc (42.5 mL) and EtOH (170 mL) and the reaction was hydrogenated at 50 psi for 1 h. The reaction was filtered through Celite and the reaction mixture was concentrated to afford 6.7 g (96percent yield) as a light brown solid. LCMS m/z 135.1[M + H]+. |
70% | With palladium 10% on activated carbon; hydrogen; In methanol; for 3.0h; | Reference Example 114 4-Amino-2-fluorobenzonitrile To a solution of <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (2.51 g) in methanol (125 mL) was added 10percent palladium carbon (50percent containing water, 237 mg), and the mixture was stirred under a hydrogen atmosphere for 3 hr. The reaction mixture was filtrated, and the filtrate was concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1) to give the title compound as a pale-yellow solid (yield 1.43 g, 70percent). 1H-NMR (CDCl3)delta: 4.31 (2H, brs), 6.37-6.45 (2H, m), 7.31-7.36 (1H, m). |
palladium-carbon; In methanol; | Reference Example 114 4-Amino-2-fluorobenzonitrile To a solution of <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (2.51 g) in methanol (125 mL) was added 10percent palladium carbon (50percent containing water, 237 mg), and the mixture was stirred under a hydrogen atmosphere for 3 hr. The reaction mixture was filtrated, and the filtrate was concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent: hexane-ethyl acetate=1:1) to give the title compound as a pale-yellow solid (yield 1.43 g, 70percent). 1H-NMR (CDCl3)delta: 4.31 (2H, brs), 6.37-6.45 (2H, m), 7.31-7.36 (1H, m). | |
With hydrogen;5%-palladium/activated carbon; In methanol; at 20℃; under 1500.15 Torr; for 2.0h; | A solution of <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (5 g, 30 mmol) in 300 mL methanol is stirred in a hydrogenation reactor with palladium (5percent on activated charcoal, 400 mg) for 2 h at RT and 2 bar hydrogen pressure. The reaction mixture is filtered and evaporated down. Yield: 4 g. | |
With iron; ammonium chloride; In ethanol; water; acetic acid; for 5.0h;Heating / reflux; | Preparation 15: 4-Amino-2-fluorobenzonitrile: Saturated aqueous ammonium chloride (50 mL) and acetic acid (3 mL) were added to a stirred solution of <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (50.0 g, 301 mmol) in EtOH (600 mL) followed by iron powder (2 g, 35.7 mmol). The mixture was heated under reflux and more iron powder (123 g, 2.20 mol) added portionwise over a 4 h period. The reaction heated for a further 1 h then allowed to cool to rt before being filtered through a celite plug. The filtrate was evaporated to dryness and the residual material partitioned between EtOAc (500 mL) and water (200 mL). The organic phase was washed with water (50 mL) and brine (100 mL), then dried (MgSO4) and evaporated to afford the title compound: deltaH (ddelta-DMSO) 6.41-6.46 (2H, m), 6.52 (2H, br s), 7.37- 7.41 (IH, m). | |
With palladium 10% on activated carbon; hydrogen; In ethanol; acetonitrile; under 2585.81 Torr; for 1.0h; | <strong>[34667-88-4]2-fluoro-4-nitrobenzonitrile</strong> (0.125 g, 0.751 mmol) was hydrogenated at 50 psi in the presence of 10percent Pd/C (40 mg) in EtOH/EtOAc (15mL) for 1 h. Filtered through Celite® and concentrated to an orange solid that was carried onto next step. MS (ESI) m/z: 137 (M+H)+. | |
With palladium 10% on activated carbon; hydrogen; In methanol; at 20℃; for 12.0h; | A solution of 66 6 (10.0g, 60.24mmol) in 69 methanol (100mL) was hydrogenated with 10percent 70 Pd/C (1.0g) under hydrogen atmosphere at room temperature for 12h. After filtration, the filtrate was evaporated to give the corresponding product. It was obtained as a gray 16 solid in 88percent yield. 7 was ready for the next step without the further purification. HRMS (ESI): m/z, calculated for C7H5FN2 137.0487 (M+H)+, found 137.0452. |
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