Structure of 96145-98-1
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CAS No. : | 96145-98-1 |
Formula : | C10H7F3N2O |
M.W : | 228.17 |
SMILES Code : | C1(=CC=CC=C1)[N]2C(=CC(=N2)C(F)(F)F)O |
MDL No. : | MFCD03714773 |
InChI Key : | PSQCMVQGPMFFCX-UHFFFAOYSA-N |
Pubchem ID : | 892717 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 16 |
Num. arom. heavy atoms | 11 |
Fraction Csp3 | 0.1 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 5.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 50.59 |
TPSA ? Topological Polar Surface Area: Calculated from |
38.05 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.74 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.79 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
3.75 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.53 |
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 |
2.56 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.39 |
Solubility | 0.0931 mg/ml ; 0.000408 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.25 |
Solubility | 0.13 mg/ml ; 0.000568 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.25 |
Solubility | 0.129 mg/ml ; 0.000568 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 |
-5.71 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 |
0.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
1.0 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) |
1.93 |
* 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 |
---|---|---|
95% | With trichlorophosphate; at 0℃;Heating; | 1-Phenyl-3-(trifluoromethyl)-1H-pyrazol-5-ol (3) (1 mmol,0.23 g), N, N-dimethylformamide (DMF, 4 mmol, 0.3 g) were added into phosphoryl trichloride (2 mL) at 0 C. After the mixture were refluxed for 5 h, excess phosphoryl trichloride was distilled off. The residue was extracted by ethyl acetate and purified through column chromatography. Compound 4 was obtained as white solid in 95% yield. 1H NMR (500 MHz, CDCl3) delta: 10.02 (s, 1H), 7.54 (m, 5H) ppm.13C NMR (125 MHz, CDCl3) delta: 181.2, 142.7 (q, 2JC-F=40 Hz, C=N),136.1, 134.0, 130.3, 129.7, 129.6, 125.5, 120.1 (q, 1JC-F =267.5 Hz, CF3),116.6 ppm. 19F NMR (470 MHz, CDCl3) delta: 62.00 (s, CF3) ppm. |
90% | With trichlorophosphate; at 95℃; for 4.5h; | Phosphorus oxychloride (21.47 g, 140.0 mmol) was slowly added to dimethylformamide (2.56 g, 35.0 mmol) at 0 C while stirring, then <strong>[96145-98-1]1-<strong>[96145-98-1]phenyl-3-(trifluoromethyl)-1H-pyrazol-5-ol</strong></strong> (1) (8.00 g, 35.0 mmol) was added and the mixture was heated at 95 C for 4.5 h. After cooling to rt, it was slowly poured into ice-water (200 mL) under vigorous stirring, in the process an orange oil was formed. The mixture was extracted with EtOAc (3×50 mL), the combined organic phases were washed with brine, 5% aq NaHCO3 solution and brine (each 30 mL), dried over anhydrous Na2SO4 and evaporated under reduced pressure. The residue was subjected to column chromatography (SiO2, EtOAc/light petroleum 1:1) to afford 8.65 g (90 %) of a colorless oil which slowly solidified while standing: mp 34-36 C. 1H NMR (500 MHz, CDCl3): delta 7.56 (m, 5H, Ph H), 10.06 (s, 1H, CHO) ppm. 13C NMR (125 MHz, CDCl3): delta 116.6 (2JC4,CHO = 28.9 Hz, C-4), 120.1 (q, 1JCF3 = 270.7 Hz, CF3), 125.5 (Ph C-2,6), 129.5 (Ph C-3,5), 130.3 (Ph C-4), 133.7 (3JC5,CHO = 3.3 Hz, C-5), 136.1 (Ph C-1), 142.9 (2JC3,CF3 = 40.0 Hz, 3JC3,CHO = 2.0 Hz, C-3), 181.1 (1J = 183.9 Hz, CHO) ppm. 19F NMR (470 MHz, CDCl3): delta -61.9 (CF3) ppm. IR (KBr): = 1700 (C=O) cm-1. EIMS, m/z (rel. int.): 276 (28), 275 (44), 274 (80) [M]+, 273 (100), 255 (4), 245 (6), 209 (5), 136 (6), 77 (51), 51 (22). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.0% | With acetic acid; at 10 - 80℃; for 6.5h; | (Reference Example 2) Synthesis of 5-hydroxy-1-phenyl-3-trifluoromethylpyrazole: Ethyl 4,4,4-trifluoroacetoacetate (18.4 g (0.1 mol)) was dissolved in 12.0 g (0.2 mol) of acetic acid. The resulting solution was cooled to 10C or less with stirring, and 11.8 g (0.11 mol) of phenylhydrazine was added dropwise thereto over 0.5 hours. After the dropwise addition, the solution was stirred at room temperature for 1 hour and subsequently at 80C for 5 hours. When the reaction was completed, the reaction solution was cooled to room temperature, and 100 mL of water was added thereto. The produced crystal was collected by filtration, washed twice with 50 mL of water and dried by a hot air drier to obtain 22.3 g (yield: 98.0%) of the title compound as a pale yellow crystal. LC-MS(EI): m/z=228 (M+), melting point: 190-192C. |
92% | In ethanol; for 12h;Reflux; | Ethyl 4, 4, 4-1rifluoro3-oxobutanoate (S3, 200 p1., 1.37 mmoi, I equiv) and phenyihydrazine (148 IrL. 1.37 inmol, 1.00 equiv) were dissolved in ethanol (1.4 mL) and the resulting mixture was stirred for 12 hours at reflux. The reaction mixture was cooled to 24 c and the solvent was evaporated in vacuo. The residue was dissolved into ethyl acetate (3 mL) and washed with IN HCI (3 x 3 mL). The organic layer was dried over sodium sulfate, filtrated and concentrated in vacuo. The resulting material was washed with dichloromn ethane (5 mL) to afford the compound as orange solid (289 mg, 92%).Rf 0.25 (30% ethyl acetate-hexanes; UV). ?HNMR (500 MHz, DMSOd6): d 7.71 (d, 2H, H2, J = 8.0 Hz), 7.51 (dd, 2H, J = 8.0 Hz, H3), 7.38 (t, IH, J = 8.0 Hz, H4), 5.94 (s, 1Ff, H,). ?3C NMR (125 MHz, DMSOd6): oe 153.7 (C), 140.4 (q, 2JCF 37.4 Hz, C), 137.7 (C), 129.1 (CH), 127.2 (CH), 122.3 (CH), 121.3 (q, IJCF 266.9Hz, CF3), 85.6 (q, 3JCF =1.6 Hz, CH). ?9F NMR (375 MHz, DMS&-do): 61.8. IR (ATR.FTIR), cm?1: 3373 (br),1599 (in), 1505 (in), 1491 (m), 1456 (m), 1407(m), 1151 (s), 1119 (s), 984 (s), 758 (s), 691(s). HRMSESI (m/z): [M+H1 calculated for C10H8F3N50, 229.0583; found, 229.0598. |
87.9% | With hydrogenchloride; In ethanol; water; for 1h;Heating / reflux; | 20 g (184.9 mmoles) of phenylhydrazine and 4 ml of concentrated hydrochloric acid were added to a solution of 34.1 g (184.9 mmoles) of ethyl trifluoroacetoacetate dissolved in 500 ml of ethanol. The mixture was refluxed for 1 hour with heating, to give rise to a reaction. After the completion of the reaction, the reaction mixture was subjected to vacuum distillation to remove the most part of the solvent contained therein. The residue was mixed with water to precipitate crystals. The crystals were collected by filtration, washed with water until the filtrate became neutral, and dried to obtain 37.1 g (yield: 87.9%) of 1-phenyl-3-trifluoromethyl-1H-pyrazol-5-ol as ocherous crystals. 1H-NMR [CDCl3/TMS, delta (ppm) ]: 7.68-7.41 (5H,m), 5.86 (1H,s), 3.71 (1H,s) |
87.9% | With hydrogenchloride; In ethanol; for 1h;Heating / reflux; | REFERENCE EXAMPLE 9 Production of 1-phenyl-3-trifluoromethyl-1H-pyrazol-5-ol; 20 g (184.9 mmoles) of phenylhydrazine and 4 ml of concentrated hydrochloric acid were added to a solution of 34.1 g (184.9 mmoles) of ethyl trifluoroacetoacetate dissolved in 500 ml of ethanol. The mixture was refluxed for 1 hour with heating, to give rise to a reaction. After the completion of the reaction, the reaction mixture was subjected to vacuum distillation to remove the most part of the solvent contained therein. The residue was mixed with water to precipitate crystals. The crystals were collected by filtration, washed with water until the filtrate became neutral, and dried to obtain 37.1 g (yield: 87.9%) of 1-phenyl-3-trifluoromethyl-1H-pyrazol-5-ol as ocherous crystals. 1H-NMR [CDCl3/TMS, delta (ppm)]: 7.68-7.41 (5H,m), 5.86 (1H,s), 3.71 (1H,s) |
72% | With acetic acid; at 110℃; | Phenylhydrazine (433 mg, 4 mmol) and ethyl 4,4,4-trifluoroacetoacetate(736 mg, 4 mmol) were dissolved in glacial aceticacid. The reaction mixture was stirred at 110 C until TLC (hexane/EtOAc 1:1) showed complete consumption of the startingmaterial. Upon cooling a white solid precipitated from the solutionand was filtered and washed with ice-cold ethanol. Purification byflash column chromatography afforded the title compound as awhite solid (652 mg, 2.86 mmol, 72%). 1H NMR (400 MHz, DMSOd6,ppm) d: 5.94 (s, 1H), 7.39 (t, J = 8.0 Hz, 1H), 7.52 (t, J = 8.0 Hz,2H), 7.71 (d, J = 8.0 Hz, 2H), 12.49 (s, 1H) ppm; 13C NMR (100MHz, DMSO-d6, ppm) d: 85.6, 121.3 (q, 1JCF = 267 Hz), 122.3,127.2, 129.1, 137.7, 140.4 (d, 2JCF = 37 Hz), 153.7 ppm. |
71.8% | With acetic acid; at 10 - 80℃; for 6.5h; | (Reference Example 2) Synthesis of 5-hydroxy-1-phenyl-3-trifluoromethylpyrazole 18.4 g (0.1 mole) of ethyl 4,4,4-trifluoroacetoacetate was dissolved in 12.0 g (0.2 mole) of acetic acid. The solution was cooled to 10C or lower with stirring. Thereto was dropwise added, in 0.5 hour, 11.8 g (0.11 mole) of phenylhydrazine. After the dropwise addition, the mixture was stirred at room temperature for 1 hour and successively at 80C for 5 hours to give rise to a reaction. After the reaction, the mixture was cooled to room temperature. Thereto were added 100 ml of water. The resulting crystals were collected by filtration, washed with 50 ml of water twice, and dried in a hot-air drier, to obtain 22.3 g (yield: 98.0%) of a title compound as light yellow crystals. |
67% | With toluene-4-sulfonic acid; In ethanol; for 24h;Reflux; | Ethyl 4,4,4-trifluoro-3-oxobutanoate (5 mmol0.92 g), phenylhydrazine (5 mmol, 0.55 g) and 4-toluene sulfonic acid (TsOH,1 mmol, 0.17 g) were refluxed in 25 mL ethanol for 24 h. After cooling the reaction mixture, ethanol was evaporated and the residue was extracted with ethyl acetate (20 mL 3). The combined organic layer was then washed with sodium bicarbonate solution and dried with MgSO4. The crude product was purified through column chromatography. Compound 3 was obtained in 67% yield. Ketoenol tautomerism of compound 3 was existed as data showed from 1H, 13C NMR spectra. 1H NMR (500 MHz, acetone-d6) delta: 11.04(s, 1H, OH), 7.82 (d, J 8.0 Hz, 2H), 7.51 (t, J 7.5 Hz, 2H), 7.37 (t,J 7.5 Hz, 1H) ppm. 13C NMR (125 MHz, acetone-d6) delta: 206.6, 153.9,142.5 (q, 2JC-F 37.5 Hz) 139.1, 129.8, 128.0, 123.2122.3 (q,1JC-F 266.5 Hz, CF3), 86.7 ppm. 19F NMR (470 MHz, acetone-d6) delta: 63.66 (s, CF3) ppm. |
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