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Chemical Structure| 33252-63-0

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CAS No.: 33252-63-0

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Product Details of [ 33252-63-0 ]

CAS No. :33252-63-0
Formula : C6H4F3NO
M.W : 163.10
SMILES Code : OC1=NC=C(C(F)(F)F)C=C1
MDL No. :MFCD00042315
InChI Key :BYRJSCNPUHYZQE-UHFFFAOYSA-N
Pubchem ID :147443

Safety of [ 33252-63-0 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 33252-63-0 ] Show Less

Physicochemical Properties

Num. heavy atoms 11
Num. arom. heavy atoms 6
Fraction Csp3 0.17
Num. rotatable bonds 1
Num. H-bond acceptors 5.0
Num. H-bond donors 1.0
Molar Refractivity 31.26
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

33.12 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.49
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

1.71
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

2.96
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

1.33
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

1.89
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.88

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-2.27
Solubility 0.884 mg/ml ; 0.00542 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-2.02
Solubility 1.55 mg/ml ; 0.00952 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-2.33
Solubility 0.77 mg/ml ; 0.00472 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

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)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-6.08 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.64

Application In Synthesis of [ 33252-63-0 ]

* 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.

  • Downstream synthetic route of [ 33252-63-0 ]

[ 33252-63-0 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 422-64-0 ]
  • [ 33252-63-0 ]
  • [ 115591-73-6 ]
  • 2
  • [ 33252-63-0 ]
  • [ 76041-73-1 ]
YieldReaction ConditionsOperation in experiment
99.8% To a solution of 5-(trifluoromethyl)pyridin-2-ol (10.52 g, 62 mmol) and sodium acetate (5.29 g, 64 mmol) in glacial acetic acid (38 mL) was added bromine (3.36 mL, 65 mmol) at room temperature. The white cloudy solution slowly turned into a clear brown solution, which was heated at 80 C. for 2.5 h. The mixture was allowed to cool to room temperature and then evaporated under reduced pressure. The residue was neutralized with saturated NaHCO3 solution to pH=8. The resulting solution was extracted with EtOAc three times. The combined extracts were dried over MgSO4, filtered, and evaporated in vacuo to yield 15.1 g (99.8%) of the crude product (15.1 g, 98.8%) as a white solid. LC-MS calculated for C6H3BrF3NO: (M+H)+241.9; found 241.9/243.9. Step A-2
98% With bromine; sodium acetate; In acetic acid; at 80℃; for 2.5h; To a solution of 5-trifluoromethyl-2-pyridinal (51 g, 310 mmol) and sodium acetate (26. 2G, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 ML, 325 mmol) and the resulting mixture was heated at 80 C for 2.5 h. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHC03 solution and extracted with ethyl acetate (3 x 200 mL). The organics were combined, dried over MGS04, filtered, and evaporated in vacuo to yield 74.45 g (98%) of the crude product. 1H NMR (400 MHz, CDC13) 8 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
98.7% With bromine; sodium acetate; In acetic acid; at 80℃; for 2.5h; To a solution of 5-TRIFLUOROMETHYL-2-PYRIDINOL (51. 0 g, 307 mmol) and sodium acetate (26.2 g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C for 2.5 hours. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NAHC03 solution and extracted with ethyl acetate (3 x 200 mL). The organic layers were combined, dried over MgS04, filtered, and evaporated in vacuo to yield 74.45 g (98.7%) of the crude PRODUCT. H NMR (400 MHz, CD) 5 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
98.7% INTERMEDIATE 2; Step A; To a solution of 5-trifluoromethyl-2-pyridinol (51.0 g, 307 mmol) and sodium acetate (26.2 g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C. for 2.5 hours. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHCO3 solution and extracted with ethyl acetate (3×200 mL). The organic layers were combined, dried over MgSO4, filtered, and evaporated in vacuo to yield 74.45 g (98.7%) of the crude product. 1H NMR (400 MHz, CDCl3) delta 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
98% With bromine; sodium acetate; In acetic acid; at 80℃; for 2.5h; To a solution of 5-trifluoromethyl-2-pyridinal (51 g, 310 mmol) and sodium acetate (26.2 g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C. for 2.5 h. The reaction was allowed to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHCO3 solution and extracted with ethyl acetate (3×200 mL). The organics were combined, dried over MgSO4, filtered, and evaporated in vacuo to yield 74.45 g (98%) of the crude product. 1H NMR (400 MHz, CDCl3) delta 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
98.7% With bromine; sodium acetate; In acetic acid; at 80℃; for 2.5h; To a solution of 5-trifluoromethyl-2-pyridinol (51.0 g, 307 mmol) and sodium acetate (26.2 g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C. for 2.5 hours. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHCO3 solution and extracted with ethyl acetate (3×200 mL). The organic layers were combined, dried over MgSO4, filtered, and evaporated in vacuo to yield 74.45 g (98.7%) of the crude product. 1H NMR (400 MHz, CDCl3) delta 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
95% With bromine; sodium acetate; In acetic acid; at 80℃; for 2h; To a solution of 5-TRIFLUOROMETHYL-2-PYRIDINOL (21.37 g, 131 mmol), and sodium acetate (11.23 g , 107 mmol) in glacial acetic acid was added bromine (6.94 ml, 135 mmol), and the resulting mixture stirred at 80 C for 2 hours. The cooled reaction mixture was evaporated and the residue basified by the addition of saturated NAHC03 (500 ml), and extracted with ethyl acetate (3 x 300 ml); the combined ethyl acetate layers were dried over MGS04, filtered and evaporated in vacuo to give the product (30.21 g, 95%) ; IH NMR 500MHZ (CDC13) 8 = 8.00 (1H, d, J = 2.29 Hz), 8.16 (LH, d, J=2. 29HZ).
85% With N-Bromosuccinimide; In N,N-dimethyl-formamide; for 2h; lambda/-bromosuccinimide (NBS, 39.0Og, 0.22 mol) is added portionwise to a solution of 5-(trifluoromethyl)pyridin-2-ol (30.0Og, 0.18 mol) in DMF (180 ml_), and the resulting mixture is stirred for 2 hours. The mixture is poured into water (1200 mL) and the precipitate was collected by filtration. The crystal is dried in vacuo to give the product as a white solid (1st crystal : 28.1Og). The filtrate is extracted with EtOAc, and the organic layer is concentrated.The residue is poured into water and the precipitate is collected by filtration. The crystal is dried in vacuo to give 3-bromo-5-(trifluoromethyl)pyridin-2-ol (2nd crystal : 9.65 g, total:37.75g, 85 % yield) as a yellow solid.1H-NMR (400MHz, CDCI3), delta (ppm): 7.86 (d, 1H), 8.02 (d, 1H), 13.17 (br, 1H).
With N-Bromosuccinimide; In N,N-dimethyl-formamide; for 2h; V-bromosuccinimide (NBS, 39.0Og, 0.22 mol) is added portionwise to a solution of 5- {trifluoromethyl)pyridin-2-ol (30.0Og, 0.18 mol) in DMF (180 ml_), and the resulting mixture is stirred for 2 hours. The mixture is poured into water (1200 ml.) and the precipitate is collected by filtration. The crystal is dried in vacuo to give the product as a white solid (1st crystal : 28.1Og). The filtrate is extracted with EtOAc, and the organic layer is concentrated. The residue is poured into water and the precipitate is collected by filtration. The crystal is dried in vacuo to give 3-bromo-5-(trifluoromethyl)pyridin-2-ol as a yellow solid. 1H-NMR (400MHz, CDCI3), delta (ppm): 7.86 (d, 1 H), 8.02 (d, 1 H), 13.17 (br, 1 H).
With N-Bromosuccinimide; In N,N-dimethyl-formamide; for 2h; lambda/-bromosuccinimide (NBS, 39.0Og, 0.22 mol) is added portionwise to a solution of 5- (trifluoromethyl)pyridin-2-ol (30.0Og, 0.18 mol) in DMF (180 mL), and the resulting mixture is stirred for 2 hours. The mixture is poured into water (1200 mL) and the precipitate is collected by filtration. The crystal is dried in vacuo to give the product as a white solid (1st crystal : 28.1Og). The filtrate is extracted with EtOAc, and the organic layer is concentrated. The residue is poured into water and the precipitate is collected by filtration. The crystal is dried in vacuo to give 3-bromo-5-(trifluoromethyl)pyridin-2-ol as a yellow solid. <n="45"/>Case 505091H-NMR (400MHz, CDCI3), delta (ppm): 7.86 (d, 1 H), 8.02 (d, 1H), 13.17 (br, 1 H).
With bromine; sodium acetate; In acetic acid; at 80℃; for 2.5h; INTERMEDIATE 4 To a solution of 5-trifluoromethyl-2-pyridinal (51 g, 310 mmol) and sodium acetate (26.2g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C for 2.5 h. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHC03 solution and extracted with ethyl acetate (3 x 200 mL). The organics were combined, dried over MgS04, filtered, and evaporated in vacuo to yield 74.45 g (98%) of the crude product.

  • 3
  • [ 33252-63-0 ]
  • [ 76041-73-1 ]
YieldReaction ConditionsOperation in experiment
98% With bromine; sodium acetate; acetic acid; at 80℃; for 2.5h; INTERMEDIATE 7 Step A; To a solution of 5-trifluoromethyl-2-pyridinal (51 g, 310 mmol) and sodium acetate (26.2g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C for 2.5 h. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHC03 solution and extracted with ethyl acetate (3 x 200 mL). The organics were combined, dried over MgS04, filtered, and evaporated in vacuo to yield 74.45 g (98%) of the crude product. 1H NMR (400 MHz, CDC13) 8 8.04 (d, J=2.6 Hz, 1H), 7.89 (m, 1H).
98% With bromine; sodium acetate; acetic acid; at 80℃; for 2.5h; INTERMEDIATE 7; Step A; To a solution of 5-trifluoromethyl-2-pyridinal (51 g, 310 mmol) and sodium acetate (26.2g, 319 mmol) in glacial acetic acid (200 mL) was added bromine (16.7 mL, 325 mmol) and the resulting mixture was heated at 80 C for 2.5 h. The reaction was allow to cool to room temperature and then was evaporated under reduced pressure. The residue was neutralized with saturated NaHC03 solution and extracted with ethyl acetate (3 x 200 mL). The organics were combined, dried over MgS04, filtered, and evaporated ilz vacuo to yield 74.45 g (98%) of the crude product.
  • 4
  • [ 327056-62-2 ]
  • [ 33252-63-0 ]
  • 5-[5-(trifluoromethyl)pyridin-2-yl]oxy}pyridine-2-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
86% With potassium carbonate; In N,N-dimethyl acetamide; at 100℃; for 3h; Step A: A mixture of 5-(trifluoromethyl)pyridin-2-ol (1.0 g,8.2 mmol), <strong>[327056-62-2]2-cyano-5-fluoropyridine</strong> (1.5 g, 9.0 mmol), K2CO3(1.4 g, 9.8 mmol) and DMA (3.0 mL) was stirred at 100 C for 3 h.After cooling to room temperature, the reaction mixture wasdiluted with water and extracted with AcOEt. The organic layerwas washed with brine, dried over Na2SO4 and concentrated invacuo. The resulting residue was purified by silica gel chromatography(hexane-AcOEt) to give 5-[5-(trifluoromethyl)pyridin-2-yl]oxy}pyridine-2-carbonitrile (1.9 g, 86%) as a colorless solid. 1HNMR (CDCl3) d: 8.80 (1H, d, J = 2.0 Hz), 8.02 (1H, dd, J = 8.4,2.5 Hz), 7.89 (1H, d, J = 9.0 Hz), 7.72 (1H, s), 7.59 (1H, dd, J = 9.8,2.7 Hz), 6.78 (1H, d, J = 9.8 Hz). MS (ESI+) m/z: 266 (M+H)+.
 

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