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Chemical Structure| 349-58-6 Chemical Structure| 349-58-6

Structure of KG-655
CAS No.: 349-58-6

Chemical Structure| 349-58-6

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Product Details of [ 349-58-6 ]

CAS No. :349-58-6
Formula : C8H4F6O
M.W : 230.11
SMILES Code : OC1=CC(C(F)(F)F)=CC(C(F)(F)F)=C1
MDL No. :MFCD00000386
InChI Key :ODSXJQYJADZFJX-UHFFFAOYSA-N
Pubchem ID :67680

Safety of [ 349-58-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Computational Chemistry of [ 349-58-6 ] Show Less

Physicochemical Properties

Num. heavy atoms 15
Num. arom. heavy atoms 6
Fraction Csp3 0.25
Num. rotatable bonds 2
Num. H-bond acceptors 7.0
Num. H-bond donors 1.0
Molar Refractivity 38.47
TPSA ?

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

20.23 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.7
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

3.9
Log Po/w (WLOGP)?

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

5.73
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.

3.59
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

3.44
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

3.67

Water Solubility

Log S (ESOL):?

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

-3.89
Solubility 0.0298 mg/ml ; 0.00013 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.

-4.02
Solubility 0.0218 mg/ml ; 0.0000948 mol/l
Class?

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

Moderately 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

-3.6
Solubility 0.0574 mg/ml ; 0.000249 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

No
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

Yes
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.

-4.93 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<2.0
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)

1.38

Application In Synthesis of [ 349-58-6 ]

* 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 [ 349-58-6 ]

[ 349-58-6 ] Synthesis Path-Downstream   1~54

  • 1
  • [ 34662-31-2 ]
  • [ 349-58-6 ]
  • [ 38710-84-8 ]
  • 3
  • [ 899807-80-8 ]
  • [ 349-58-6 ]
  • [ 899807-81-9 ]
YieldReaction ConditionsOperation in experiment
83% With di-isopropyl azodicarboxylate; triphenylphosphine; In tetrahydrofuran; at 20℃; EXAMPLE 15 (Z)-7-[(1R,2S,3R,5R)-2-(3,5-Bis-trifluoromethyl-phenoxymethyl)-5-chloro-3-hydroxy-cyclopentyl]-hept-5-enoic acid (15c, FIG. 6) Step 1: Mitsunobu Reaction of 21 and Hydroxyaryl to Give 22c DIAD (50 muL, 0.26 mmol) was added to a solution of alcohol 21 (88 mg, 0.22 mmol), triphenylphosphine (88 mg, 0.34 mmol) and 3,5-bis(trifluoromethyl)phenol (40 muL, 0.26 mmol) in CH2Cl2 (1.1 mL). After stirring overnight at rt, the solvent was removed under a stream of nitrogen. The residue was diluted with EtOAc (25 mL), washed with saturated aqueous NaHCO3 (3.x.10 mL) and brine (10 mL) then the organic phase was dried (Na2SO4) filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (10percent EtOAc/hexane) afforded 112 mg (83percent) of the desired ether 22c.
83% With di-isopropyl azodicarboxylate; triphenylphosphine; In tetrahydrofuran; at 20℃; EXAMPLE 15 (Z)-7-[(1R,2S,3R,5R)-2-(3,5-Bis-trifluoromethyl-phenoxymethyl)-5-chloro-3-hydroxy-cyclopentyl]-hept-5-enoic acid (15c, FIG. 6) Step 1: Mitsunobu Reaction of 21 and Hydroxyaryl to Give 22c.; DIAD (50 muL, 0.26 mmol) was added to a solution of alcohol 21 (88 mg, 0.22 mmol), triphenylphosphine (88 mg, 0.34 mmol) and 3,5-bis(trifluoromethyl)phenol (40 muL, 0.26 mmol) in CH2Cl2 (1.1 mL). After stirring overnight at rt, the solvent was removed under a stream of nitrogen. The residue was diluted with EtOAc (25 mL), washed with saturated aqueous NaHCO3 (3.x.10 mL) and brine (10 mL) then the organic phase was dried (Na2SO4) filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (10percent EtOAc/hexane) afforded 112 mg (83percent) of the desired ether 22c.
83% With di-isopropyl azodicarboxylate; triphenylphosphine; In dichloromethane; at 20℃; Step 4: Mitsunobu reaction of 26 and hydroxyaryl to give 27.; DIAD (50 mul_, 0.26 mmol) was added to a solution of alcohol 26 (88 mg, 0.22 mmol), thphenylphosphine (88 mg, 0.34 mmol) and 3,5-bis(thfluoromethyl)phenol (40 mul_, 0.26 mmol) in CH2CI2 (1.1 ml_). After stirring overnight at room temperature, the solvent was removed under a stream of nitrogen. The residue was diluted with EtOAc (25 ml_), washed with saturated aqueous NaHCO3 (3x10 ml_) and brine (10 ml_) then the organic phase was dried (Na2SO4) filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (10percent EtOAc/hexane) afforded 112 mg (83percent) of the desired ether 27.
  • 4
  • [ 29823-18-5 ]
  • [ 349-58-6 ]
  • [ 1021459-88-0 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; Preparation of Compound d1-2 Ethyl 7-bromoheptanoate and 3,5-bis(trifluoromethyl) phenol were added to dimethylformamide (DMF). The solution was added with potassium carbonate and stirred at room temperature. The solution was added with water and extracted twice with ethyl acetate. After the organic layer was washed three times with water and dried over anhydrous magnesium sulfate, the solvent was removed. The residue was purified by silica gel column chromatography to obtain ethyl 7-(3,5-bis (trifluoromethyl)phenoxy)heptanoate.
  • 8
  • [ 685892-24-4 ]
  • [ 349-58-6 ]
  • 9
  • [ 130783-02-7 ]
  • [ 349-58-6 ]
  • 11
  • [ 349-58-6 ]
  • (E)-3-[3-(3,5-Bis-trifluoromethyl-phenoxymethyl)-phenyl]-but-2-en-1-ol [ No CAS ]
  • 13
  • [ 349-58-6 ]
  • 2-{(E)-3-[3-(3,5-Bis-trifluoromethyl-phenoxymethyl)-phenyl]-but-2-enyl}-[1,2,4]oxadiazolidine-3,5-dione [ No CAS ]
  • 16
  • [ 349-58-6 ]
  • (Z)-3-[3-(3,5-Bis-trifluoromethyl-phenoxymethyl)-phenyl]-but-2-en-1-ol [ No CAS ]
  • 19
  • [ 349-58-6 ]
  • <i>N</i>-{3-[3-(3,5-bis-trifluoromethyl-phenoxymethyl)-phenyl]-but-2-enyl}-hydroxylamine [ No CAS ]
  • 20
  • [ 349-58-6 ]
  • 2-{(Z)-3-[3-(3,5-Bis-trifluoromethyl-phenoxymethyl)-phenyl]-but-2-enyl}-[1,2,4]oxadiazolidine-3,5-dione [ No CAS ]
  • 21
  • [ 349-58-6 ]
  • C29H33F6NO6 [ No CAS ]
  • 22
  • [ 349-58-6 ]
  • 4-[3-(3,5-bis-trifluoromethyl-phenoxy)-propyl]-1<i>H</i>-imidazole [ No CAS ]
  • 23
  • [ 349-58-6 ]
  • 4-(3,5-bis-trifluoromethyl-phenoxymethyl)-4,5-dihydro-1<i>H</i>-imidazole; compound with but-2-enedioic acid [ No CAS ]
  • 24
  • [ 349-58-6 ]
  • (S)-5-(3,5-Bis-trifluoromethyl-phenoxy)-3-{(S)-3-methyl-2-[2-(naphthalen-1-yloxy)-acetylamino]-butyrylamino}-4-oxo-pentanoic acid [ No CAS ]
  • 25
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(4-fluoro-phenyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 26
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(3-chloro-phenyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 27
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(3-methyl-benzyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 28
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(2-chloro-benzyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 29
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(3,5-dichloro-phenyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 30
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(3-chloro-benzyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 31
  • [ 349-58-6 ]
  • 2-(3,5-bis-trifluoromethyl-phenoxy)-<i>N</i>-(3,4-dichloro-phenyl)-<i>N</i>-piperidin-4-yl-acetamide [ No CAS ]
  • 32
  • [ 349-58-6 ]
  • [ 190967-23-8 ]
  • 33
  • [ 349-58-6 ]
  • N-[5-(3,5-Bis-trifluoromethyl-phenoxy)-thiophen-2-yl]-methanesulfonamide [ No CAS ]
  • 34
  • [ 349-58-6 ]
  • N-Acetyl-N-[5-(3,5-bis-trifluoromethyl-phenoxy)-thiophen-2-yl]-methanesulfonamide [ No CAS ]
  • 35
  • [ 349-58-6 ]
  • [ 180134-13-8 ]
  • 36
  • [ 349-58-6 ]
  • 2-Methoxy-4,6-bis-trifluoromethyl-benzaldehyde [ No CAS ]
  • 37
  • [ 349-58-6 ]
  • 2-Deutero-3,5-bis(trifluoromethyl)anisole [ No CAS ]
  • 38
  • [ 349-58-6 ]
  • [ 180134-16-1 ]
  • 39
  • [ 349-58-6 ]
  • [ 180134-15-0 ]
  • 40
  • [ 349-58-6 ]
  • 2-Methoxy-3-methyl-4,6-bis-trifluoromethyl-benzoic acid [ No CAS ]
  • 41
  • [ 349-58-6 ]
  • 2-Acetoxy-4,6-bis-trifluoromethyl-benzoic acid [ No CAS ]
  • 42
  • [ 402-31-3 ]
  • [ 349-58-6 ]
  • 43
  • [ 349-58-6 ]
  • [ 38710-94-0 ]
YieldReaction ConditionsOperation in experiment
Examples of Phenols...2-fluoro-3-(trifluoromethyl)phenol;2-fluoro-5-(trifluoromethyl)phenol;3-fluoro-5-(trifluoromethyl)phenol;3,5-dichlorophenol; and3,5-di(trifluoromethyl)phenol.
Purification / work up; EXAMPLES 17 to 31 In the same manner as in Examples 2 to 16, each (fluoroalkyl)benzene derivative was produced. To reduce the impurities, the crystallization was conducted twice in Example 17 and the final distillation was repeated in the other examples. The purity, residual halogen content and residual metal content of the (fluoroalkyl)benzene derivatives are collectively shown in Table 2
  • 45
  • [ 321-14-2 ]
  • [ 349-58-6 ]
  • C15H7ClF6O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
13.9% With trichlorophosphate; In xylene; at 140℃; for 2h; A mixture of 5-chlorosalicylic acid(172.6mg, 1mmol), 3,5-bis(trifluoromethyl)phenol(152 muL, 1mmol), phosphorus oxychloride(40 muL, 0.43mmol) and xylene(3mL) was stirred at 140°C for 2 hours. After the reaction mixture was cooled to room temperature, it was poured into water and extracted with ethyl acetate. After the ethyl acetate layer was washed with brine and dried over anhydrous sodium sulfate, the residue obtained by evaporation of the solvent under reduced pressure was purified by column chromatography on silica gel(n-hexane:ethyl acetate=10:1-->5:1) to give the title compound(53.6mg, 13.9percent) as a white crystal.1H-NMR(CDCl3): delta 7.04(1H, d, J=9.0Hz), 7.54(1H, dd, J=9.0, 2.7Hz), 7.75(2H, s), 7.86(1H, s), 8.02(1H, d, J=2.7Hz), 10.09(1H, s).
13.9% With trichlorophosphate; In xylene; at 140℃; for 2h; A mixture of 5-chlorosalicylic acid(172.6mg, 1mmol), 3,5-bis(trifluoromethyl)phenol(152 muL, 1mmol), phosphorus oxychloride(40 muL, 0.43mmol) and xylene(3mL) was stirred at 140°C for 2 hours. After the reaction mixture was cooled to room temperature, it was poured into water and extracted with ethyl acetate. After the ethyl acetate layer was washed with brine and dried over anhydrous sodium sulfate, the residue obtained by evaporation of the solvent under reduced pressure was purified by column chromatography on silica gel(n-hexane:ethyl acetate=10:1-->5:1) to give the title compound(53.6mg, 13.9percent) as a white crystal.1H-NMR(CDCl3): delta 7.04(1H, d, J=9.0Hz), 7.54(1H, dd, J=9.0, 2.7Hz), 7.75(2H, s), 7.86(1H, s), 8.02(1H, d, J=2.7Hz), 10.09(1H, s).
13.9% With trichlorophosphate; In xylene; at 140℃; for 2h; A mixture of 5-chlorosalicylic acid(172.6mg, 1mmol), 3,5-bis(trifluoromethyl)phenol(152 muL, 1mmol), phosphorus oxychloride(40 muL, 0.43mmol) and xylene(3mL) was stirred at 140°C for 2 hours. After the reaction mixture was cooled to room temperature, it was poured into water and extracted with ethyl acetate. After the ethyl acetate layer was washed with brine and dried over anhydrous sodium sulfate, the residue obtained by evaporation of the solvent under reduced pressure was purified by column chromatography on silica gel(n-hexane:ethyl acetate=10:1-->5:1) to give the title compound(53.6mg, 13.9percent) as a white crystal.1H-NMR(CDCl3): delta 7.44(1H, d, J=9.0Hz), 7.54(1H, dd, J=9.0, 2.7Hz), 7.75(2H, s), 7.86(1H, s), 8.02(1H, d, J=2.7Hz), 10.09(1H, s).
13.9% With trichlorophosphate; In xylene; at 140℃; for 2h; A mixture of 5-chlorosalicylic acid(172.6mg, 1mmol), 3,5-bis(trifluoromethyl)phenol(152 muL, 1mmol), phosphorus oxychloride(40 muL, 0.43mmol) and xylene(3mL) was stirred at 140°C for 2 hours. After the reaction mixture was cooled to room temperature, it was poured into water and extracted with ethyl acetate. After the ethyl acetate layer was washed with brine and dried over anhydrous sodium sulfate, the residue obtained by evaporation of the solvent under reduced pressure was purified by column chromatography on silica gel(n-hexane:ethyl acetate=10:1-->5:1) to give the title compound(53.6mg, 13.9percent) as a white crystal.1H-NMR(CDCl3): delta 7.04(1H, d, J=9.0Hz), 7.54(1H, dd, J=9.0, 2.7Hz), 7.75(2H, s), 7.86(1H, s), 8.02(1H, d, J=2.7Hz), 10.09(1H, s).

  • 46
  • [ 30071-93-3 ]
  • [ 349-58-6 ]
YieldReaction ConditionsOperation in experiment
63% With dihydrogen peroxide; trifluoroacetic anhydride; In chloroform; water; at 0 - 70℃; for 6.5h; A mixture of 100 g (0.39 mol) of 3,5-bis(trifluoromethyl)acetophenone obtained above, 155.2 g of (0.74 mol) of trifluoroacetic anhydride and 400 ml of chloroform was stirred at 0°C in a nitrogen atmosphere. After adding 19.7 g (0.52 mol) of a 90percent hydrogen peroxide aqueous solution from a dropping funnel over 30 min and stirring the mixture for one our, the temperature was raised to 70°C to proceed the reaction for 5 h. After completion of the reaction, the temperature was returned to room temperature. The reaction product solution was poured into a separating funnel containing a saturated brine and washed with water. The organic phase separated was analyzed by gas chromatography. It was confirmed that 57.5 g (0.25 mol) of the aimed 3,5-bis(trifluoromethyl)phenol was produced (yield: 67percent). By vacuum distillation, 53.3 g (0.23 mol) of 3,5-bis(trifluoromethyl)phenol was isolated (yield: 63percent). The purity determined by gas chromatography was 99percent or higher. The results of ICP total elements analysis showed that none of Li, Na, K, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, W, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, In, Si, Sn, Pb, P, Sb and S were detected, and the content of each of group 1 and group 2 elements was 1 ppm or lower.
  • 47
  • [ 349-58-6 ]
  • [ 168123-63-5 ]
  • 2-nitro-3,5-bis(trifluoromethyl)phenol [ No CAS ]
YieldReaction ConditionsOperation in experiment
29.7% With nitric acid; In acetic acid; at 10 - 20℃; for 43h; Fuming nitric acid (8.22 mL, 198.2 mmol) was added dropwise to a solution of 3,5-bis(trifluoromethyl)phenol (28.5 g, 123.9 mmol) in acetic acid (300 mL) at about 10° C. After being elevated to room temperature, the mixture was stirred for 43 hours. The reaction mixture was poured into ice water and the resulting solution was extracted with ethyl acetate. The organic layers were combined, washed successively with water and saturated saline, dried over anhydrous sodium sulfate, and distilled under reduced pressure to remove the solvent. The residue was purified by chromatography on a silica gel column (developing solvent; hexane:acetone=15:1-->10:1) to yield a crude product. The crude product thus obtained was subjected to sublimation separation under reduced pressure (3 mmHg) at 80° C. by using an evaporator to distill off the isomer, that is, 2-nitro-3,5-bis(trifluoromethyl)phenol, whereby 10.1 g (yield: 29.7percent) of 4-nitro-3,5-bis(trifluoromethyl)phenol was obtained as yellow needle-like crystals. Melting point: 156 to 158° C. IR (KBr): 3412, 3111, 3071, 1611, 1549, 1464. 1H-NMR (CDCl3) delta: 6.36 (1H,s), 7.39 (2H,s). EIMS m/z (relative intensity): 275 (M+), 245 (100).
  • 48
  • trans-3-hydroxymethyl-4-phenyl-pyrrolidine-1-carboxylic acid tert-butyl ester [ No CAS ]
  • [ 349-58-6 ]
  • trans-tert-butyl-3-((3,5-bis(trifluoromethyl)phenoxy)methyl)-4-phenylpyrrolidine-1-carboxylate trifluoroacetic acid salt [ No CAS ]
YieldReaction ConditionsOperation in experiment
50% With triphenylphosphine; diethylazodicarboxylate; In tetrahydrofuran; at 20℃; Bis-trifluoromethylphenol (26.1 mg) in THF (0.4 mL) was added to trans-tert-butyl-3-(hydroxymethyl)-4-phenylpyrrolidine-1-carboxylate (28 mg, 0.10 mmol), followed by triphenylphosphine (31 mg, 0.12 mmol) and diethyl azodicarboxylate (20.2 mg, 0.12 mmol). The resulting mixture was stirred at room temperature overnight. The crude material was purified by preparative HPLC to give trans-tert-butyl-3-((3,5-bis(trifluoromethyl)phenoxy)methyl)-4-phenylpyrrolidine-1-carboxylates trifluoroacetic acid salt as a clear colorless sticky oil (31 mg, 50percent yield). HPLC purity (retention time): 100percent (2.39 min, method C). MS: 512.38 (M+Na+). The mixture of trans-tert-butyl-3-((3,5-bis(trifluoromethyl)phenoxy)methyl)-4-phenylpyrrolidine-1-carboxylate as trifluoroacetic acid salt (31 mg) and HCl (1.0 M diethyl ether solution, 0.5 mL) in methanol (0.2 mL) was stirred at room temperature over night. The reaction mixture was concentrated under vacuum and purified by preparative HPLC to yield a white solid as the title compound (18 mg, 90percent yield). 1H NMR (CD3OD, 400 MHz) delta 2.96 (1H, m), 3.38-3.48 (3H, m), 3.75-3.79 (2H, m), 4.16 (2H, ddd, J=4, 8, 24 Hz), 7.29-7.39 (7H, m), 7.51 (1H, s). HPLC purity (retention time): 98percent (1.87 min, method C). MS (ESI) (M+H)+ 390.23.
  • 49
  • [ 349-58-6 ]
  • [ 87964-30-5 ]
YieldReaction ConditionsOperation in experiment
3,5-bis(Trifluoromethyl)phenoxyacetic Acid The titled compound was prepared from 3,5-bis(trifluoromethyl)phenol according to the procedure described in of Intermediate 8.
  • 50
  • [ 1189-71-5 ]
  • [ 349-58-6 ]
  • sulfamic acid 3,5-bis(trifluoromethyl)phenyl ester [ No CAS ]
YieldReaction ConditionsOperation in experiment
6.4 g (48%) In toluene; EXAMPLE 119 Sulfamic acid 3,5-bis(trifluoromethyl)phenyl ester This compound was prepared using the procedure of Example 75 from a mixture of 9.8 g (0.043 mole) of 3,5-bis(trifluoromethyl)phenol and 3.9 ml (0.095 mole) of chlorosulfonyl isocyanate in 50 ml of toluene. The solid product was recrystallized from benzene to yield 6.4 g (48percent) of a pale yellow solid; mp 118°-120° C. Analysis: Calculated for C8 H5 F6 NO3 S: C, 31.08; H, 1.63; N, 4.53. Found: C, 31.11; H, 1.52; N, 4.60.
6.4 g (48%) In toluene; EXAMPLE 128 Sulfamic acid 3,5-bis(trifluoromethyl)phenyl ester This compound was prepared using the procedure of Example 84 from a mixture of 9.8 g (0.043 mole) of 3,5-bis(trifluoromethyl)phenol and 3.9 ml (0.095 mole) of chlorosulfonyl isocyanate in 50 ml of toluene. The solid product was recrystallized from benzene to yield 6.4 g (48percent) of a pale yellow solid; mp 118°-120° C. Analysis: Calculated for C8 H5 F6 NO3 S: C, 31.08; H, 1.63; N, 4.53; Found: C, 31.11; H, 1.52; N, 4.60.
6.4 g (48%) In toluene; EXAMPLE 97 Sulfamic acid 3,5-bis(trifluoromethyl)phenyl ester This compound was prepared using the procedure of Example 56 from a mixture of 9.8 g (0.043 mole) of 3,5-bis(trifluoromethyl)phenol and 3.9 ml (0.095 mole) of chlorosulfonyl isocyanate in 50 ml of toluene. The solid product was recrystallized from benzene to yield 6.4 g (48percent) of a pale yellow solid, mp 118°-120° C. Analysis: Calculated for C8 H5 F6 NO3 S: C, 31.08; H, 1.63; N, 4.53. Found: C, 31.11; H, 1.52; N, 4.60.
  • 51
  • N-benzyloxycarbonyl-L-phenylalanyl-L-alanine bromomethyl ketone [ No CAS ]
  • [ 349-58-6 ]
  • N-benzyloxycarbonyl-L-phenylalanyl-L-alanine 3,5-bis(trifluoromethyl)-phenoxymethyl ketone [ No CAS ]
YieldReaction ConditionsOperation in experiment
(h) N-benzyloxycarbonyl-L-phenylalanyl-L-alanine 3,5-bis(trifluoromethyl)-phenoxymethyl ketone (m.p. 178°-179.5° C.) from N-benzyloxycarbonyl-L-phenylalanyl-L-alanine bromomethyl ketone and 3,5-bis(trifluoromethyl)phenol;
  • 52
  • [ 60-29-7 ]
  • [ 1630-79-1 ]
  • [ 349-58-6 ]
  • 2,3,5,6-tetrakis[3,5-bis(trifluoromethyl)phenoxy]-2,5-bis(dimethylamino)-2,3,5,6-tetrabora-1,4-dioxane diethyl ether 0.667-solvate [ No CAS ]
  • 53
  • [ 349-58-6 ]
  • [ 66222-29-5 ]
  • {(3,5-bis(trifluoromethyl)phenoxy)methyl}tributylstannane [ No CAS ]
  • 54
  • 1,1'-diethylcobaltocenium hexafluorophosphate [ No CAS ]
  • [ 349-58-6 ]
  • potassium 3,5-bis(trifluoromethyl)phenolate [ No CAS ]
  • (C5(C2H5)H4)2Co(1+)*((CF3)2C6H3O)2H(1-)=(C5(C2H5)H4)2Co(OC6H3(CF3)2)2H [ No CAS ]
 

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