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CAS No. : | 653-30-5 | MDL No. : | MFCD00013814 |
Formula : | C8H2F5N | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | YDNOJUAQBFXZCR-UHFFFAOYSA-N |
M.W : | 207.10 | Pubchem ID : | 69554 |
Synonyms : |
|
Num. heavy atoms : | 14 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.12 |
Num. rotatable bonds : | 1 |
Num. H-bond acceptors : | 6.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 35.75 |
TPSA : | 23.79 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.99 cm/s |
Log Po/w (iLOGP) : | 1.57 |
Log Po/w (XLOGP3) : | 2.22 |
Log Po/w (WLOGP) : | 4.55 |
Log Po/w (MLOGP) : | 3.89 |
Log Po/w (SILICOS-IT) : | 4.28 |
Consensus Log Po/w : | 3.3 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.77 |
Solubility : | 0.349 mg/ml ; 0.00168 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.35 |
Solubility : | 0.916 mg/ml ; 0.00442 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -4.29 |
Solubility : | 0.0106 mg/ml ; 0.0000512 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 2.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.68 |
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P260-P264-P270-P271-P280-P301+P310-P302+P352-P304+P340-P305+P351+P338-P311-P312-P321-P322-P330-P332+P313-P337+P313-P361-P362-P363-P403+P233-P405-P501 | UN#: | 3276 |
Hazard Statements: | H301-H311-H315-H319-H331 | Packing Group: | Ⅲ |
GHS Pictogram: |
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* 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 |
---|---|---|
25% | With sodium hydride In N,N-dimethyl-formamide Ambient temperature; | |
With sodium hydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; tetrabutyl-ammonium chloride In tetrachloromethane at 45℃; for 1.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 10% 2: 25% | With perchloryl fluoride; cesium fluoride In N,N-dimethyl-formamide at 40℃; for 0.666667h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With tetrabutyl-ammonium chloride In tetrahydrofuran; water for 0.166667h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 19% 2: 78% | In ethanol at 75 - 80℃; for 0.75h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 78% 2: 19% | With potassium cyanide In ethanol at 75 - 80℃; for 0.75h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | Stage #1: (pentafluorophenyl)acetonitrile With aluminum (III) chloride; lithium aluminium tetrahydride In diethyl ether at 20℃; Stage #2: With water In diethyl ether | 1 370 mg of LiAIH4 are suspended in 10 ml of dry diethyl ether. 1.24 g of AICb are then dissolved in 6 ml of ether and added rapidly to the suspension. After 5 min, 2.00 g of pentafluorophenylacetonitrile dissolved in 6 ml of ether are slowly added dropwise. After stirring at room temperature for one hour, the remaining LiAIH4 is quenched cautiously with water, then 16 ml of 6N sulfuric acid and 8 ml of water are added. In a separating funnel, the ether phase is removed and the aqueous phase is extracted by shaking twice with 20 ml each time of ether. Finally, the aqueous phase is brought to pH 11 with KOH pellets while cooling with an ice bath, and the aqueous phase is once again extracted by shaking three times with 30 ml each time of ether. These three organic phases are combined and dried over sodium sulfate, and the solvent is removed under gentle vacuum.Yield: 1.70 g (0.85 mmol, 85% of theory)1H NMR (400 MHz, CDCI3, TMS): δ = 2.95 (t, 2H, 3J=7.2 Hz), 2.83 (t, 2H, 3J=7.2 Hz) |
81% | With aluminum (III) chloride; lithium aluminium tetrahydride In tetrahydrofuran at 20℃; for 1h; | |
73% | With lithium aluminium tetrahydride; aluminium trichloride In diethyl ether for 1h; |
67% | With sodium tetrahydroborate; trifluoroacetic acid In tetrahydrofuran at 20℃; for 4h; Inert atmosphere; | 2-(Pentafluorophenyl)ethanamine (5). To a stirred suspension of NaBH4 (12.4 g, 324 mmol) in dry THF (200mL) under predried argon was added CF3CO2H (36.9 g, 324 mmol) in dry THF (30 mL) over a period of 10 minat 20 oC. 2,3,4,5,6-Pentafluorophenylacetonitrile (4) (67.07 g, 324 mmol) was then added dropwise in dry THF(30 mL), and the mixture was stirred at rt for 4 h after this addition. The excess reagent was then cautiouslydecomposed with H2O below 10 oC in an ice bath, and the resulting mixture was concentrated to dryness invacuo, and extracted with CH2Cl2. The extract was washed with saturated NaHCO3 solution, H2O, and driedover anhydrous Na2SO4. Concentration in vacuo yielded of 5 as a residual green oily layer (45.74 g, 67%), whichwas used without further purification for the preparation of 4,5,6,7-tetrafluoroindole. In order to characterizethe amine, a small amount was distilled to give a colorless liquid; bp 96-102 oC (33 Torr) (lit.27 bp 80-90 oC (20Torr)); IR (neat) 3350, 2940, 2860, 1660, 1525, 1510 cm-1; 1H NMR (CDCl3) δ 1.25 (m, 2H), 3.25 (m, 2H); UV(95% EtOH) λmax 225, 247 nm. |
65% | With aluminum (III) chloride; lithium aluminium tetrahydride In tetrahydrofuran for 1h; Inert atmosphere; | |
50% | With lithium aluminium tetrahydride; aluminium trichloride In tetrahydrofuran at 0℃; for 1h; | |
With lithium aluminium tetrahydride | ||
With LiAlH4; sulfuric acid In diethyl ether; water | 1 Preparation of 2-pentafluorophenylethylamine Example 1 Preparation of 2-pentafluorophenylethylamine 370 mg of LiAlH4 are suspended in 10 ml of dry diethyl ether. 1.24 g of AlCl3 are then dissolved in 6 ml of ether and added rapidly to the suspension. After 5 min, 2.00 g of pentafluorophenylacetonitrile dissolved in 6 ml of ether are slowly added dropwise. After stirring at room temperature for one hour, the remaining LiAlH4 is quenched cautiously with water, then 16 ml of 6N sulfuric acid and 8 ml of water are added. In a separating funnel, the ether phase is removed and the aqueous phase is extracted by shaking twice with 20 ml each time of ether. Finally, the aqueous phase is brought to pH 11 with KOH pellets while cooling with an ice bath, and the aqueous phase is once again extracted by shaking three times with 30 ml each time of ether. These three organic phases are combined and dried over sodium sulfate, and the solvent is removed under gentle vacuum. Yield: 1.70 g (0.85 mmol, 85% of theory) 1H NMR (400 MHz, CDCl3, TMS): δ=2.95 (t, 2H, 3J=7.2 Hz), 2.83 (t, 2H, 3J=7.2 Hz) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; potassium fluoride; hydrogen 1.) aq. EtOH, r.t., 1-3 atm, 2.) DMF, reflux, 4 h; Yield given. Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; hydrogen In ethanol Ambient temperature; Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; ammonia 1.) EtOH, a) from 0 deg C to RT, b) RT, 72 h, 2.) EtOH, RT, 3 h; Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With disulfur dichloride; tetrabutyl-ammonium chloride In dichloromethane for 240h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With lithium diisopropyl amide In tetrahydrofuran; cyclohexane at -78 - 20℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
126 mg | With potassium hydroxide In dimethyl sulfoxide at 20℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydride In dimethyl sulfoxide at 20℃; for 0.0833333h; Further byproducts given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide In dimethyl sulfoxide at 20℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: NaH 2: H2SO4 / (heating) | ||
Multi-step reaction with 3 steps 1: 25 percent / NaH / dimethylformamide / Ambient temperature 2: 27 percent / H2SO4 / ethanol / 10 h / Heating 3: 62 percent / p-TsOH / formic acid / 90 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: NaH 2: H2SO4 / (heating) 3: H2SO4 | ||
Multi-step reaction with 2 steps 1: 25 percent / NaH / dimethylformamide / Ambient temperature 2: 27 percent / H2SO4 / ethanol / 10 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 10 percent / perchloryl fluoride; cesium fluoride / dimethylformamide / 0.67 h / 40 °C 2: 65 percent / 80percent aq. H2SO4; / acetic acid / 48 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 10 percent / perchloryl fluoride; cesium fluoride / dimethylformamide / 0.67 h / 40 °C 2: 65 percent / 80percent aq. H2SO4; / acetic acid / 48 h / 20 °C 3: 91 percent / diethyl ether / overnight |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 10 percent / perchloryl fluoride; cesium fluoride / dimethylformamide / 0.67 h / 40 °C 2: 65 percent / 80percent aq. H2SO4; / acetic acid / 48 h / 20 °C 3: 60 percent / sulfur tetrafluoride / CH2Cl2 / 6 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 50 percent / AlCl3; LiAlH4 / tetrahydrofuran / 1 h / 0 °C 2: 45 percent / 3 Angstroem molecular sieves / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 50 percent / AlCl3; LiAlH4 / tetrahydrofuran / 1 h / 0 °C 2: 51 percent / 3 Angstroem molecular sieves / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: LDA / cyclohexane; tetrahydrofuran / 1 h / -78 - 20 °C 2: tetrahydrofuran; cyclohexane / 65 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 63 percent / S2Cl2, n-Bu4NCl / CH2Cl2 / 240 h 2: 27 percent / Ph3Sb / liquid sulphur dioxide / 0.08 h / -70 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1.) HCl, 2.) NH3 / 1.) EtOH, a) from 0 deg C to RT, b) RT, 72 h, 2.) EtOH, RT, 3 h 2: Et3N / methanol / 23 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 1.) HCl, 2.) NH3 / 1.) EtOH, a) from 0 deg C to RT, b) RT, 72 h, 2.) EtOH, RT, 3 h 2: Et3N / methanol / 23 h / Heating 3: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 30 min, 2.) THF, hexane, -78 deg C, 30 min |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 73 percent / LiAlH4, AlCl3 / diethyl ether / 1 h 2: 61 percent / KF / dimethylformamide / 4 h / Heating | ||
Multi-step reaction with 2 steps 1: H2, conc. HCl / PtO2 / aq. ethanol / 760 - 2280 Torr / Ambient temperature 2: 61 percent / KF / dimethylformamide / 4 h / Heating | ||
Multi-step reaction with 2 steps 1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: (i) Mg, (ii) /BRN= 636496/ 2: LiAlH4 3: PCl5 4: aq. ethanol | ||
Multi-step reaction with 4 steps 1: (i) Mg, (ii) /BRN= 636496/ 2: LiAlH4 3: aq. HBr, H2SO4 4: aq. ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: LiAlH4 2: PCl5 3: aq. ethanol | ||
Multi-step reaction with 3 steps 1: LiAlH4 2: aq. HBr, H2SO4 3: aq. ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: Cl2 / Irradiation 2: aq. ethanol | ||
Multi-step reaction with 4 steps 1: Cl2 / Irradiation 2: aq. K2CO3 / Heating 3: aq. HBr, H2SO4 4: aq. ethanol | ||
Multi-step reaction with 2 steps 1: Br2 / Irradiation 2: aq. ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: (i) Mg, (ii) /BRN= 906769/ 2: LiAlH4 3: PCl5 4: aq. ethanol | ||
Multi-step reaction with 4 steps 1: (i) Mg, (ii) /BRN= 906769/ 2: LiAlH4 3: aq. HBr, H2SO4 4: aq. ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; tetrabutylammomium bromide In dodecane; water; chlorobenzene at 35℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; tetra-(n-butyl)ammonium iodide In dodecane; water; chlorobenzene at 35℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | With iodine; sodium methylate In methanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ammonia / ethanol; water 2: phosphorus pentoxide / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ammonia / ethanol; water 2: phosphorus pentoxide / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ammonia / ethanol; water 2: phosphorus pentoxide / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | With ammonia In ethanol; water | 1 7.2.1. 3,7-Bis(perfluorophenyl)benzo[1,2-b:4,5-b']difuran-2,6-diamine: 3 2,3,4,5,6-Pentafluorophenylacetonitrile 2 (7.1 ml, 3 equiv, 55.5 mmol) was added to a solution of 1,4-benzoquinone 1 (2.0 g, 18.5 mmol) in ethanol (50 mL) at room temperature. Then addition of an excess of aqueous solution of ammoniac (7.0 mL) resulted in a fast exothermic reaction and precipitation of a white solid. After 1 h stirring the solid was recovered by filtration and was washed with ethanol (25 mL). Drying under vacuum afforded 3.8 g (40%) of 3 as a white powder, which was used in the next step without any further purification.Mp: 260 °C. 1H NMR (DMSO-d6): 6.98 (s, 2H), 6.68 (s, 4H) ppm 19F NMR (DMSO-d6): -139.7 (dd, 4F, J=6.8 Hz, J=22.4 Hz), -162.3 (t, 2F, J=22.4 Hz), -165.8 (td, 4F, J=6.8 Hz, J=22.4 Hz) ppm 13C NMR (DMF-d7): 157.9, 146.9, 124.2, 108.7, 97.6, 75.5 ppm.IR: 3110, 1481 cm-1. Mass (MALDI-TOF):C22H6F10N2O2, Calcd 520.03 (M+), Found 519.4.Anal. Calcd for C22H6F10N2O2: C, 50.70; H,1.15; N, 5.38. Found: C, 50.59; H, 1.40; N, 5.33. |
40% | With ammonium hydroxide | |
With ammonium hydroxide In ethanol |
With ammonium hydroxide In ethanol Inert atmosphere; Green chemistry; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | In ethanol; water at 50℃; for 5h; | |
46% | In ethanol; water at 50℃; for 5h; | As you can see in the above Scheme 12, 2 500 ml - neck (neck) in a flask, potassium cyanide (Potassium cyanide) (2.5 g, 38.3mmol) and the mixture is dissolved in 50 ml water. Ethanol (Ethanol) was added to 2,3,4,5,6-pentafluoro-benzyl bromide dissolved in 110 ml (Pentafluorobenzyl bromide) (10 g, 38.3 mmol) and the mixture was stirred for 5 hours at 50° C . Diethyl ether (Diethyl ether) to the extraction, and then distilled under reduced pressure, and then the dichloromethane (dichloromethane) and hexane (hexane) used for the column chromatography to 3.6 g (46%) of compound was obtained. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
16 % de | With potassium <i>tert</i>-butylate; iodine In tetrahydrofuran at 0 - 20℃; Overall yield = 0.9 g; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 15% 2: 40% | Stage #1: 2,5-diformylfurane; (pentafluorophenyl)acetonitrile With potassium <i>tert</i>-butylate In ethanol at 20℃; for 2.25h; Stage #2: With ammonium chloride In water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
45% | With ammonium hydroxide In ethanol for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ammonium hydroxide / ethanol 2: phosphorus pentoxide / ethyl acetate |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ammonium hydroxide / ethanol 2: phosphorus pentoxide / ethyl acetate |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
66% | With sodium hydride In tetrahydrofuran at 70℃; for 18h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With sulfuric acid; acetic acid In water for 15h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 6 h / 115 °C 2: acetic acid; sulfuric acid / water / 15 h / Reflux | ||
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 48 h / 20 °C 2: sulfuric acid; acetic acid / 16 h / Reflux | ||
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide; water / 3 h / 110 - 120 °C / Inert atmosphere 2: acetic acid; sulfuric acid / Reflux; Inert atmosphere |
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 48 h / 20 °C 2: acetic acid; sulfuric acid / water / 16.5 h / 20 °C / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sodium hydride / tetrahydrofuran / 18 h / 70 °C 2: sodium hydride / tetrahydrofuran / 48 h / 80 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium hydride / tetrahydrofuran / 18 h / 70 °C 2: sodium hydride / tetrahydrofuran / 48 h / 80 °C 3: toluene-4-sulfonic acid / toluene / 9 h / 85 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sodium hydride / tetrahydrofuran / 18 h / 70 °C 2: sodium hydride / tetrahydrofuran / 48 h / 80 °C 3: toluene-4-sulfonic acid / toluene / 9 h / 85 °C 4: bromine / water / 1.5 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium hydride / tetrahydrofuran / 18 h / 70 °C 2: sodium hydride / tetrahydrofuran / 48 h / 80 °C 3: bromine / water / 1 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With pyridine; titanium tetrachloride In dichloromethane at -78 - 20℃; for 16h; | In the above reaction scheme 14. As you can see, 500 ml 2 - neck (neck) to the flask obtained in scheme 7 compound (2.0 g, 5.4mmol), the compound obtained in Scheme 12 (11.2 g, 54 mmol) were placed in dichloromethane (dichloromethane ) was dissolved in 300 ml, titanium (IV) chloride (5.9 ml, 54 mmol) and pyridine (pyridine) (8.7 ml, was added dropwise 108 mmol) slowly at -78 in turn. And the mixture was stirred under reflux for 16 hours. After the dropwise addition of distilled water under an ice bath (Ice bath) to terminate the reaction, distilled water and dichloromethane (dichloromethane) in the work-up (work up) and then with dichloromethane (dichloromethane) and hexane (hexane) by column chromatography. 1.0 g was obtained of the compound A41 (25%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
44% | With pyridine; titanium tetrachloride In dichloromethane at -78 - 20℃; for 16h; | As shown in Scheme 13 above, 500 ml 2- neck (neck) of the compound obtained in Reaction Scheme 9, to the flask (0.84 g, 2.0mmol), compound (2.1 g, 10 mmol) obtained in Scheme 12 into dichloromethane (dichloromethane ) was dissolved in 250 ml, it was added dropwise titanium (IV) chloride (1.1 ml, 10 mmol) and pyridine (pyridine) (1.6 ml, 20 mmol) slowly at -78° C in turn. And the mixture was stirred under reflux for 16 hours. After the dropwise addition of distilled water under an ice bath (Ice bath) to terminate the reaction, distilled water and dichloromethane (dichloromethane) in the work-up (work up) and then with dichloromethane (dichloromethane) and hexane (hexane) by column chromatography. compound A40 was obtained in 0.54 g (44%) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | Stage #1: (pentafluorophenyl)acetonitrile With sodium hydride In tetrahydrofuran; mineral oil at 0 - 20℃; for 1h; Stage #2: 5,10-dibromo-naphtho[1,2-b:5,6-b']dithiophene With 1,1'-bis-(diphenylphosphino)ferrocene; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran; mineral oil for 10h; Heating; | 3 Synthesis of Compound 3 Acetonitrile Aryl (207 mg, 1.0 mmol) and THF (5 mL) and dissolved in sodium hydride (60% in oil, 50 mg, 1.3 mmol) in at 0 ° C was added slowly and then for 1 hour at room temperature, stirring was dongan. Tetrakis (triphenylphosphine) palladium (58 mg, 0.05 mmol), 1,1'-bis (diphenylphosphino) ferrocene (55 mg, 0.1 mmol), 5,10-dibromonaphtho [1,2-b: 5,6-b '] added dithiophene (200 mg, 0.5 mmol) and the resulting mixture was stirred under heating for 10 hours. After the reaction was completed, it cooled to room temperature to give put water (10 mL) and HCl (1 M, 3 mL) was stirred for 1 hour. The resulting solid product was filtered and then washed with water and methanol. Was added to acetonitrile (10mL) added to the obtained solid to give an aqueous solution of bromine (2 mL) was stirred for 30 minutes. Again filtered and washed with acetonitrile, ethanol, hexane. Next, wash with hot chlorobenzene to obtain a solid-state compounds of three reddish black. (0.221mg, 68% yield) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
309 mg | With piperidine In chloroform Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: piperidine / chloroform / Reflux 2: metal tert-butoxide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (pentafluorophenyl)acetonitrile With lithium hydride In diethylene glycol dimethyl ether at 0 - 20℃; for 0.25h; Stage #2: tetrachlorocyclopropane In diethylene glycol dimethyl ether at 0 - 20℃; for 44h; Stage #3: With hydrogen bromide; nitric acid; acetic acid for 1.5h; | Synthesis of radiotriene compounds General procedure: Lithium hydride (98%) was suspended in 600 ml of glyme and cooled to 0 ° C. 152 mmol of arylacetonitrile (k-o) was slowly added dropwise60 ml of glycolDimethyl ether. The ice bath was removed, and the mixture was heated to room temperature. After 15 minutes of stirring at room temperature, the mixture was recooled to 0 ° C and 40 mmol of tetrachlorocyclopropane was slowly added dropwise to 40 ml of glycolDimethyl ether. Stirring was continued for 44 hours after heating to room temperature. The mixture was then added to 1.2 liters of ice water and acidified with hydrochloric acid (ρ H = 1). The aqueous solution was extracted three times with 500 ml each of ethyl acetate and the cleaned organic phase was first washed with a saturated edible salt solution, then with water, then with sodium bicarbonate solution and finally with water. Dried over magnesium sulfate and the solvent removed in vacuo. The retained dark brown oil was used in the next synthesis without purification. The material was dissolved in 1.4 liters of glacial acetic acid and mixed in a dropwise manner with stirring under a pre-prepared mixture of 360 ml (48%) of hydrobromic acid and 120 ml (65%) of nitric acid. Stir for 1.5 hours and then filter. The red solid was washed with water,Dried in vacuum and subsequently purified by gradient sublimation (p_t) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With sulfuric acid; acetic acid In water at 20℃; for 16.5h; Reflux; | 2.2 Step2: Add in the reactorIntermediate A-2-1 (2.79 g, 10 mmol),50% acetic acid (4.10 mL) and sulfuric acid (0.2 mL),Stir after 16 hours of reflux,After the mixture is cooled to room temperature,The reaction was terminated by dropwise addition of 10 mL of cold distilled water.After stirring for 0.5 h,The reaction mixture was extracted with distilled water and chloroform.It was then concentrated to give intermediate A-2-2 (1.95 g, 97%). |
82% | With sulfuric acid; acetic acid Reflux; Inert atmosphere; | 2,3,4,5,6-Pentafluorophenylacetonitrile (4). Ethyl a-cyanopentafluorophenylacetate (105.3 g, 397 mmol) was refluxed for 12 h in 50% AcOH (300 mL) containing H2SO4 (conc., 10 mL). The mixture was then cooled to rt,diluted with an equal volume of H2O, stirred, and a viscous, dark layer settled to the bottom of the flask. The mixture was chilled in an ice bath, the top layer was decanted until the remaining mixture consisted mostly of the dark layer, which was then transferred to a separatory funnel, where the remaining water layer was removed. The dark layer was then extracted with Et2O, and the ethereal layers were combined, washed withH2O, saturated NaHCO3 solution, and dried (MgSO4) to yield 79.74 g of crude pentafluorophenylacetonitrile.Distillation gave 67.1 g (324 mmol, 82%) of 4: bp 65 oC (0.20 Torr) (lit.27 bp 105-107 oC (8 Torr)). IR (neat) 2975,2260, 1660, 1540, 1140 cm-1; mass spectrum, m/e 207 (M+, 100%), 188, 181, 161, 157, 117, 93, 69. |
With sulfuric acid; acetic acid for 16h; Reflux; | Aryl cyanoacetate (FJ) of the whole amount in 84ml of acetic acid (50%) with 4.15ml of concentrated sulfuric acid were heated together to reflux for 16 hours manner.After cooling, pour the entire amount was poured onto 120ml of ice water and stirred for 30 minutes.Phase separation occurs and the aqueous phase extracted with chloroform use 100ml.Purified organic phase and subsequent use 100ml water to wash use 100ml saturated sodium bicarbonate.After drying over magnesium sulfate and the solvent was removed, in accordance with the vacuum distillation as a colorless oil (ko). |
With sulfuric acid; acetic acid for 16h; Reflux; | Synthesis of 3-carboxylene Compounds General procedure: The whole amount of arylcyanoacetate (f-j) was heated with reflux of 415 ml of concentrated sulfuric acid in 84 ml of acetic acid (50%) for 16 hours. After cooling, the whole amount was poured into 120 ml of ice water and stirred for 30 minutes. The phases were separated and the aqueous phase was extracted with 10 ml of chloroform. The organic phase was then washed with 100 m of ice and washed with 100 ml of saturated sodium carbonate solution. After drying with magnesium sulfate and after removal of the solvent, the remaining material was distilled in vacuo to give a colorless oil (k-o). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (pentafluorophenyl)acetonitrile With lithium hydride at 0 - 20℃; for 0.25h; Stage #2: 1,2,3,3-tetrachlorocyclopropene at 0 - 40℃; | Synthesis of 3-carboxylene Compounds General procedure: lithium hydride (98%) was suspended in 600 mL of polyethylene glycol dimethyl ether and cooled to 0 °C. A 52 mmo aryl acetonitrile (k-o) was added dropwise to 60 mL of polyethylene glycol dimethyl ether. Remove the ice bath and allow the reaction to warm to room temperature. After stirring at room temperature for 15 minutes' the mixture was again cooled to 0 °C and 40.0 °C was slowly added dropwise to 40 mL of polyethylene glycol dimethyl ether. The mixture was then forced to 1.2 U water and acidified with hydrochloric acid (ρΗ = 1). Will be extracted three times by shaking the aqueous solution, each of which is extracted with 50 mL of ethyl acetate and the organic phase is washed first in a saturated saline solution and then washed with water and then with sodium bicarbonate Wash 'and finally wash again with water. It was dried over magnesium sulfate and the solvent was removed in vacuo. Will be left deepThe brown oil was used in the following synthesis without further purification The material was dissolved in 1.4 U7JC acetic acid and the previously prepared mixture of 360 mL hydrobromic acid (48%) and 120 mL nitric acid (65%) was added dropwise with stirring. The mixture was stirred for 1.5 hours and then filtered. The resulting red solid was washed with water, dried in vacuo, and then purified by gradient sublimation (p-t). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With pyridine; titanium tetrachloride In dichloromethane for 24h; | 2 Example 2: Preparation of Compound HT1 4.01 g (10 mmol) of intermediate A-1, 9.53 g (46 mmol)2,3,4,5,6-pentafluorophenylacetonitrile,17.26 g (91 mmol) of titanium tetrachloride was added to the reaction flask.Add 7.2 ml (91 mmol) of pyridine and 58 ml of dichloromethane.Reaction for 24 hours,Filtering,The filtrate is distilled off under reduced pressure to remove the organic solvent.Purification by column chromatography with ethyl acetate/cyclohexane system.Finally recrystallized in a dichloromethane/petroleum ether system,4.75 g (6.1 mmol) of compound HT1 (yield 61%) was obtained. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2.1: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere 3.1: sodium hydroxide / water / 10 h / 20 °C / Inert atmosphere 4.1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 12 h / Reflux; Inert atmosphere 5.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 4 h / -50 - 20 °C / Inert atmosphere 5.2: -100 - 20 °C / Inert atmosphere 6.1: potassium carbonate / water; methanol / 4.5 h / Inert atmosphere; Reflux | ||
Multi-step reaction with 6 steps 1.1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2.1: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere 3.1: manganese(IV) oxide / benzene / 60 h / 20 - 30 °C / Molecular sieve; Inert atmosphere 4.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 8.67 h / -78 - 20 °C / Inert atmosphere 4.2: -78 - 20 °C / Inert atmosphere 5.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 4 h / -50 - 20 °C / Inert atmosphere 5.2: -100 - 20 °C / Inert atmosphere 6.1: potassium carbonate / water; methanol / 4.5 h / Inert atmosphere; Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2.1: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere 3.1: manganese(IV) oxide / benzene / 60 h / 20 - 30 °C / Molecular sieve; Inert atmosphere 4.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 8.67 h / -78 - 20 °C / Inert atmosphere 4.2: -78 - 20 °C / Inert atmosphere 5.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 4 h / -50 - 20 °C / Inert atmosphere 5.2: -100 - 20 °C / Inert atmosphere 6.1: potassium carbonate / water; methanol / 4.5 h / Inert atmosphere; Reflux 7.1: acetic anhydride / 24 h / 80 - 90 °C / Inert atmosphere | ||
Multi-step reaction with 7 steps 1.1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2.1: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere 3.1: sodium hydroxide / water / 10 h / 20 °C / Inert atmosphere 4.1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 12 h / Reflux; Inert atmosphere 5.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 4 h / -50 - 20 °C / Inert atmosphere 5.2: -100 - 20 °C / Inert atmosphere 6.1: potassium carbonate / water; methanol / 4.5 h / Inert atmosphere; Reflux 7.1: acetic anhydride / 24 h / 80 - 90 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium tetrahydroborate; trifluoroacetic acid / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere 2: potassium fluoride / N,N-dimethyl-formamide / 3 h / Reflux; Inert atmosphere 3: sodium hydroxide / water / 10 h / 20 °C / Inert atmosphere |
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