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CAS No. : | 636-32-8 | MDL No. : | MFCD19441381 |
Formula : | C6H6O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | UYQMSQMCIYSXOW-UHFFFAOYSA-N |
M.W : | 142.11 | Pubchem ID : | 69464 |
Synonyms : |
|
Num. heavy atoms : | 10 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 4.0 |
Num. H-bond donors : | 4.0 |
Molar Refractivity : | 34.53 |
TPSA : | 80.92 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | Yes |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | Yes |
Log Kp (skin permeation) : | -6.81 cm/s |
Log Po/w (iLOGP) : | 0.41 |
Log Po/w (XLOGP3) : | 0.5 |
Log Po/w (WLOGP) : | 0.51 |
Log Po/w (MLOGP) : | -0.4 |
Log Po/w (SILICOS-IT) : | -0.06 |
Consensus Log Po/w : | 0.19 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -1.48 |
Solubility : | 4.7 mg/ml ; 0.0331 mol/l |
Class : | Very soluble |
Log S (Ali) : | -1.77 |
Solubility : | 2.42 mg/ml ; 0.017 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -0.07 |
Solubility : | 120.0 mg/ml ; 0.847 mol/l |
Class : | Soluble |
PAINS : | 1.0 alert |
Brenk : | 2.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.02 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
74% | at 110℃; for 1 h; | To a solution of 2,5-dihydroxy-1,4-dibenzoquinone 7 (2.0 g, 1.0 equiv.) in HCl (110 mL) tin granulate (2.068 g, 1.2 equiv.) was added slowly. The reaction was warmed to 110 °C for 1 hour, and when temperature decrease (50-60 °C), was filtered and cooled to 0 °C, to obtain, after crystallization, compound 8 (1.450 g, 74percent) as colorless crystals. 1H NMR (MeOD, 300 MHz) δ 5.0 (br, 4H), 5.90 (s, 2H). ESI-MS: m/z 145.03 [M+]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
14.07 mmol, 49.3% | With hydrogenchloride In water | EXAMPLE 54 1,2,4,5-Tetrahydroxybenzene STR76 2,5-Dihydroxy-1,4-benzoquinone (4.00 g, 28.55 mmol) was suspended in water (50 ml, distilled) followed by Na2 S2 O4 (10.00 g, 57.47 mmol) and HCl (5.5 g, 55.75 mmol conc. soln.). The mixture was stirred 30 min. at room temperature and evaporated to dryness. The residue was washed with THF (40 ml) and filtered. The THF was evaporated yielding 2.00 g (14.07 mmol, 49.3percent) of the title substance. 1 H NMR (DMSO6, 300 MHz) δ: 7.59 (bs, OH, 4H),6.23 (s, CH, 2H). 13 C NMR (DMSOd6, 75 MHz) δ: 136,96, 104.65. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With hydrogenchloride; tin; at 110℃; for 1h; | To a solution of 2,5-dihydroxy-1,4-dibenzoquinone 7 (2.0 g, 1.0 equiv.) in HCl (110 mL) tin granulate (2.068 g, 1.2 equiv.) was added slowly. The reaction was warmed to 110 C for 1 hour, and when temperature decrease (50-60 C), was filtered and cooled to 0 C, to obtain, after crystallization, compound 8 (1.450 g, 74%) as colorless crystals. 1H NMR (MeOD, 300 MHz) delta 5.0 (br, 4H), 5.90 (s, 2H). ESI-MS: m/z 145.03 [M+]. |
65% | With hydrogenchloride; tin; for 1h;Reflux; | To a flask was added 2,5-dihydroxy-[1,4] benzoquinone (1.0 g, 7.15 mmol), concentrated HCl(20 mL). The mixture was constantly stirred with slowly adding to tinpowder (1.02 g, 8.58 mmol), refluxed for 1 h. The reaction mixture at50 C was filtered off, and the filtrate was cooled at 0 C to yield whitesolid. The crude product was recrystallized from THF to yield tetrahydroxybenzene(0.65 g, 65%). |
With hydrogenchloride; iron; In water; | EXAMPLE 55 1,2,4,5-Tetrahydroxybenzene STR77 2,5-Dihydroxy-1,4-benzoquinone (10.00 g, 71.43 mmol) was suspended in water (200 ml, distilled) followed by HCl (6 mL, 142.86 mmol, conc.). Iron (4.00 g, 71.43 mmol, powder) was added and the mixture was stirred 30 minutes at room temperature. The solution was filtered and the solution evaporated to dryness. The product was isolated as a grey brown powder containing some iron complexes. Yield 14.80 g. The product is used as such in the reaction with acetone and P2 O5 (Example 5) with no negative effects. |
With palladium 10% on activated carbon; hydrogen; In ethanol; under 3750.38 Torr; for 72h; | A suspension of 2,5-dihydroxycyclohexa-2,5-diene-1,4-dione (1) (10 g, 3.6 mmol) in 100 mL ethanol was hydrogenated in the presenceof 10% Pd/C (1.2 g) under in an initial hydrogen pressure of 0.5 MPa for 3 days. After completion of the reaction (LC-MS), the mixture was filtered off, the filtrate was concentrated under reduced pressure to afford compound a-1. To a round-bottom flask fitted with Dean-Stark apparatus were added compound a-1 (9.9 g, 70 mmol), Pyridiniumtoluene-4-sulfonate (2 g, 8 mmol), 2-Methoxypropene (30 mL, 0.31 mol), and toluene (300 mL).The mixture was heated to reflux for 3 h. A second portion of 2-methoxypropene (20 mL, 0.21 mol) was added and heating continued for 12 h. After cooling, the reaction mixture was washed with aqueous NaOH (6 mol/L) and brine, dried over Na2SO4, and concentrated under reduced pressure. Thecrude product was purified by chromatography on silica gel (PE/EtOAc = 100/1) to afford compound a-2 with the yield of 80%. n-BuLi (1.6 M in hexane, 1.6 mL, 2.5 mmol) at -10 oC under nitrogen was added to a solution of a-2 (0.43 g, 2.2 mmol) in THF (10 mL). After stirring for 30 min at -10 oC, alkyl bromide (2.5 mmol) was added to the solution slowly. After 10 min, the mixture was warm to 25 oC and stirred overnight. After completion of the reaction (TLC), saturated ammonium chloride (2 mL) was added to the solution. The mixture was extracted with diethyl ether, washed with brine,dried over Na2SO4, and concentrated under reduced pressure. The crude product was purified by chromatography on silica gel to give intermediates 4a-8a. Then the intermediate was dissolved in dioxane (5 mL), followed by the addition of hydrochloride acid (6 mol/L, 2 mL). The mixture was stirred at reflux under the air for 8h. After cooling, the solution was extracted with diethyl ether, washed with brine, dried over Na2SO4, and concentrated under reduced pressure. The crude product was purified by chromatography on silica gel (acidated by 0.1 mol/L oxalic acid) to give the pure product. | |
With palladium on activated charcoal; hydrogen; In ethanol; under 2280.15 - 3800.26 Torr; | The starting materials for the preparation of the following compounds are all Compound A,It was prepared from 2,5-diphenylyl-1,4-benzothiophene followed by H2 / Pd-C reduction,To obtain 1,2,4,5-benzenetetraol,And then with 2-methyl propylene,Pyridine p-toluenesulfonate (PPTS) | |
With (iPr4PCP)IrH4; hydrogen; In toluene; at 100℃; under 760.051 Torr; for 2h; | General procedure: To a Teflon stoppered tube shaped glass ampoule ?4.8mL in volume, 0.166mmol of the desired para-benzoquinone, a stir bar, and 0.25mL toluene containing 0.5mg iPrPCPIrH4 are added. Then the solution is freeze-pump-thaw degassed twice, and 1atm H2 applied. The sealed vessel is heated at a given temperature in an aluminum heat block with stirring for a prescribed period of time. When the reaction is ceased, volatiles are removed until only several muL toluene remain, and then the ampoule is quickly sealed. After this, 0.5mL THF-d8 is added and the solution transferred to an NMR tube for analysis. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tin; In hydrogenchloride; | Example 3 Tin 32.8 g was added to a solution prepared by dissolving 32.2 g of 2,5-dihydroxybenzene in 700 mL of hydrochloric acid (37% by weight), and the mixture was stirred at 50 C. for 2 hours and then refluxed for 15 minutes. This solution was cooled down to 0 C., and crystal was deposited. This crystal was filtered and dried, and then it was recrystallized from tetrahydrofuran to obtain 24.6 g of 1,2,4,5-tetrahydroxybenzene. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
2.00 g (14.07 mmol, 49.3%) | With hydrogenchloride; In water; | EXAMPLE 54 1,2,4,5-Tetrahydroxybenzene STR76 2,5-Dihydroxy-1,4-benzoquinone (4.00 g, 28.55 mmol) was suspended in water (50 ml, distilled) followed by Na2 S2 O4 (10.00 g, 57.47 mmol) and HCl (5.5 g, 55.75 mmol conc. soln.). The mixture was stirred 30 min. at room temperature and evaporated to dryness. The residue was washed with THF (40 ml) and filtered. The THF was evaporated yielding 2.00 g (14.07 mmol, 49.3%) of the title substance. 1 H NMR (DMSO6, 300 MHz) delta: 7.59 (bs, OH, 4H),6.23 (s, CH, 2H). 13 C NMR (DMSOd6, 75 MHz) delta: 136,96, 104.65. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Example 4 9,10-dimethyl-5,7,12,14-tetrahydroazapentacene was prepared. This compound is illustrated as Formula (3) below: 1,2-Phenylene diamine (761 mg, 7.04 mmol, 1 eq) and <strong>[636-32-8]1,2,4,5-<strong>[636-32-8]tetrahydroxybenzene</strong></strong> (1.00 grams, 7.04 mmol, 1 eq) were ground together using a mortar and pestle and transferred to an amber jar and purged thoroughly with Ar. The jar was sealed and placed in a 180 C. oven for 3 hours. The jar was cooled to room temperature and the material was blended with 4,5-dimethylphenylenediamine (958 mg, 7.04 mmol, 1 eq) in a mortar and pestle. The jar was purged with Argon, sealed, and placed in a 180 C. oven for 3 hours. The sample was removed from the oven and cooled to room temperature. The sample was a mass of black (shimmery green) solid. The sample weighed 2.03 grams indicating a yield of 92%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | Example 4; 9,10-dimethyl-5,7,12,14-tetrahydroazapentacene was prepared. This compound is illustrated as Formula (5) below: 1,2-Phenylene diamine (761 mg, 7.04 mmol, 1 eq) and <strong>[636-32-8]1,2,4,5-<strong>[636-32-8]tetrahydroxybenzene</strong></strong> (1.00 grams, 7.04 mmol, 1 eq) were ground together using a mortar and pestle and transferred to an amber jar and purged thoroughly with Ar. The jar was sealed and placed in a 180 C. oven for 3 hours. The jar was cooled to room temperature and the material was blended with 4,5-dimethylphenylenediamine (958 mg, 7.04 mmol, 1 eq) in a mortar and pestle. The jar was purged with Argon, sealed, and placed in a 180 C. oven for 3 hours. The sample was removed from the oven and cooled to room temperature. The sample was a mass of black (shimmery green) solid. The sample weighed 2.03 grams indicating a yield of 92%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 180℃; for 1h;Inert atmosphere; Sealed tube; | Example 1; TH-TAP was prepared. 1,2-diaminobenzene (8.37 grams, 77 mmol, 2.2 equivalents) and <strong>[636-32-8]1,2,4,5-<strong>[636-32-8]tetrahydroxybenzene</strong></strong> (5 grams, 35.2 mmol, 1 equivalent) were ground together using a mortar and pestle and transferred to an amber jar and purged with argon. The jar was sealed and placed in a 180 C. bath for 1 hour. The material never dissolved. The material was heated with a propane torch for 5 to 10 minutes. The crude material was collected by filtration and washed with acetone. Soxhlet extraction of the solid (tetrahydrofuran, 1,2-dichlorobenzene) did not afford much material. Dimethyl sulfoxide (DMSO) extracts afforded some purple solid. Ethanol extracts afforded very little material.The purple solid was recovered from the soxhlet thimble and dried in a vacuum oven. Train vacuum sublimation with a first zone at 360 C. and a second zone at 340 C. afforded a metallic green solid.Proton nuclear magnetic resonance spectroscopy, i.e. 1H NMR, was conducted at a frequency of 300 MHz after dissolving metallic green solid in DMSO-d6. The solution was fluorescent reddish-pink. The signal was weak and the 1H NMR spectrum (FIG. 1) showed aromatic protons at chemical shifts below and above 7 ppmDifferential scanning calorimetry (DSC) was conducted and showed no thermal event below 350 C. Thermal gravimetric analysis was also conducted and showed less than 1% loss at 300 C. and about 4% loss at 450 C. Major product loss started at about 550 C. These results indicate the high thermal stability of these compounds.The calculated elemental analysis for a 100% pure 5,7,12,14-tetrahydro-5,7,12,14-tetraazapentacene (C18H14N4) is 75.5 wt % carbon, 4.93 wt % hydrogen, and 19.57 wt % nitrogen. The observed sample included 75.2 wt % carbon, 4.2 wt % hydrogen, and 19.9 wt % nitrogen.Matrix-assisted laser desorption/ionization was performed using a time-of-flight mass spectrometer (MALDI-TOF). The calculated mass of 5,7,12,14-tetrahydrotetraazapentacene is 286.1218 Da. The observed mass using MALDI-TOF was 285.8100. FIG. 2 is the MALDI-TOF spectrum. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 180℃; for 4h;Inert atmosphere; Sealed tube; | Example 3; 2,3,9,10-tetramethyl-5,7,12,14-tetrahydrotetraazapentacene was prepared. This compound is illustrated as Formula (4) below: <strong>[636-32-8]1,2,4,5-<strong>[636-32-8]tetrahydroxybenzene</strong></strong> (2.0 grams, 14.1 mmol) and 4,5-dimethyl-1,2-phenylenediamine (3.83 grams, 28.2 mmol) were ground together with a mortar and pestle, and placed in a tightly sealed vial under an argon atmosphere. The vial was heated in a 180 C. oven for 4 hours, then opened to air and allowed to cool. The resulting material was washed with acetone several times, filtered, and dried.A portion (2 grams) of the isolated sample was slowly added to trifluoroacetic acid (175 mL) over a 30 minute period and allowed to dissolve for 45 minutes. The resulting solution was filtered to remove insoluble impurities. The filtrate (a dark blue mixture) was added slowly to ice-cold deionized water (700 mL). The resulting precipitate was collected by filtration, reslurried in deioized water, filtered, and dried in a vacuum oven at 50 C. to afford the product as a black-purple solid (1.52 grams). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 180℃; for 4h;Inert atmosphere; Sealed tube; | Example 5; A compound of Formula (6) was prepared: 1,2,4,5-tetrahydroxybenzene (158 mg, 1.11 mmol, 1.0 eq.) was ground to a fine powder using a mortar and pestle and then added to a glass vial containing N,N'-dimethyl-o-phenylenediamine (303 mg, 2.22 mmol, 2.0 eq.). The vial was flushed thoroughly with argon, sealed, and then heated slightly under a flame gun to make a homogeneous solid. The reaction was heated to 180 C. for 4 hours to afford a brown solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 2h; | To a flask was added 2,3,5,6-Tetrafluoro-1,4-benzenedicarbonitrile1(800 mg, 4.0 mmol), tetrahydroxybenzene 2(280 mg, 2.0 mmol) and potassium carbonate (2.21 g, 16.0 mmol), andDMF (30 mL). The mixture was stirred at room temperature for 2 h. Themixture was filtered and the solvent was removed on a rotary evaporator.The residue was poured into water and was extracted withdichloromethane. After the combined organic phase was dried overanhydrous sodium sulfate and filtered, the filtrate was evaporated togive the crude product, which was recrystallized from DMF to furnish 3as yellow acicular crystal. After the crystal was stirred to 100 mL diethylether solvent to remove DMF and filtered, the filter cake was driedto give pure 3 as yellow solid (813 mg, 88%). Mp > 280 C; 1H NMR(400 MHz, DMF-d7) delta 7.42 (s, 2H) ppm. 13C NMR (100 MHz, Acetoned6)delta 149.2, 146.4, 142.4, 138.4, 109.4, 107.8; IR (KBr) nu 3060, 2922,2243, 1649, 1529, 1481, 1412, 1389, 1315, 1266, 1176, 1015, 942,892, 714, 651 cm-1; HR-MS (ESI+) m/z calculated for C22H2F4N4O4[M]+ 462.0012, found 462.0017 [M]+. |
Tags: 636-32-8 synthesis path| 636-32-8 SDS| 636-32-8 COA| 636-32-8 purity| 636-32-8 application| 636-32-8 NMR| 636-32-8 COA| 636-32-8 structure
[ 865836-87-9 ]
Triphenylene-2,3,6,7,10,11-hexaol hydrate
Similarity: 0.83
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H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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