Structure of 4'-Bromo-2'-fluoroacetophenone
CAS No.: 625446-22-2
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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. : | 625446-22-2 |
Formula : | C8H6BrFO |
M.W : | 217.04 |
SMILES Code : | CC(C1=CC=C(Br)C=C1F)=O |
MDL No. : | MFCD03411551 |
InChI Key : | ASKFCSCYGAFWAB-UHFFFAOYSA-N |
Pubchem ID : | 21938581 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H319 |
Precautionary Statements: | P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.12 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 44.29 |
TPSA ? Topological Polar Surface Area: Calculated from |
17.07 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.87 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.4 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
3.21 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.94 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.25 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.73 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.04 |
Solubility | 0.2 mg/ml ; 0.000922 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.4 |
Solubility | 0.864 mg/ml ; 0.00398 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.87 |
Solubility | 0.0291 mg/ml ; 0.000134 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 |
-5.92 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) |
1.31 |
* 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 |
---|---|---|
72% | With hydrazine hydrate; In ethylene glycol; at 165℃; for 12h; | Intermediate 95 6-bromo-3-methyl-1H-indazole To a solution of intermediate 94 (3.7 g, 17.04 mmoles) in 1,2-ethanediol (25 ml), hydrazine hydrate (1.65 ml, 34.09 mmoles) was added at room temperature and heated to 165 C. After 12 h, the reaction mixture cooled to room temperature, quenched with water and solid precipitated was filtered and dried under vacuum to afford the title compound as colourless solid (2.5 g, 72% yield). 1H-NMR (delta ppm, DMSO-d6, 400 MHz): delta 12.74 (s, 1H), 7.67 (d, J=5.8 Hz, 1H), 7.65 (s, 1H), 7.19 (dd, J=8.6, 1.4 Hz, 1H), 2.46 (s, 3H). |
With hydrazine hydrate; In ethylene glycol; at 20 - 200℃; for 1.5h;Microwave irradiation; | Part C: Compound 721 (1.1 g, 5.04 mmol) was dissolved in ethylene glycol (10 ml_) and hydrazine monohydrate (277 mg, 5.5 mmol) and stirred at room temperature for 30 minutes followed by 1 hour at 200 0C in a microwave. The reaction was quenched with brine and extracted with methylene chloride. The organic layer was dried over sodium sulfate and concentrated to provide compound 722 (1.0 g). 1H NMR (400 MHz, CDCI3): delta 7.65 (m, 1 H), 7.58 (m, 1H), 7.3 (m, 1 H), 2.6 (S, 3H). | |
With hydrazine hydrate; In ethanol; at 120℃; for 23h; | Intermediate 125; 6-Bromo-3-methyl-1 H-indazole; A suspension of 1-(4-bromo-2-fluorophenyl)ethanone (8.33 g, 38.4 mmol) in 15 mL of hydrazine monohydrate (309 mmol, 8 equiv) was heated to 120 0C under a reflux condenser for 23 hours. The resulting suspension (after cooling to room temperature) was filtered. The white solids were washed with water (2 X 15 mL), sucked under house vacuum at room temperature for 24 hours, and then dried under vacuum at room temperature over P2O5 for 24 hours to afford the title compound (7.59 g) as a yellow solid. LC-MS (ES) m/z = 211 , 213 [M+H]+. |
With hydrazine hydrate; In ethylene glycol; at 200℃; for 4.5h;Microwave irradiation; | [0001196] To a solution of l-(4-bromo-2-fluorophenyl)ethan-l-one (1.0 g, 3.89 mmol) in 1 ,2-ethanediol (12 mL) was added 80% of hydrazine monohydrate (0.6 mL, 7.78 mmol) at room temperature. The reaction mixture was stirred at 200 C in a microwave for 4.5 h, cooled down to room temperature, and quenched with water (50 mL). The solid precipitated was filtered, washed with water (20 mL), and dried under vacuo to afford Compound 334A. | |
With hydrazine hydrate; In ethanol; at 120℃; for 12h; | [000673j A stirred solution of compound 3 (1 eq) in hydrazine monohydrate (8 eq) was stirred at 120 C for 12 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the reaction mixture was diluted with water, extracted with ethyl acetate (3 X 25 mL). The combined organic extracts were washed with brine, dried over anhydrous sodium sulfate and evaporated under reduced pressure. The crude product was washed with diethyl ether to afford compound 4. LCMS (mlz): 213.00 (M+2). |
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