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CAS No. : | 22395-22-8 | MDL No. : | MFCD00017462 |
Formula : | C16H12O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | QKNDCRMJDZLFEG-UHFFFAOYSA-N |
M.W : | 252.26 | Pubchem ID : | 466268 |
Synonyms : |
|
Num. heavy atoms : | 19 |
Num. arom. heavy atoms : | 16 |
Fraction Csp3 : | 0.06 |
Num. rotatable bonds : | 2 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 74.41 |
TPSA : | 39.44 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | Yes |
CYP2C9 inhibitor : | Yes |
CYP2D6 inhibitor : | Yes |
CYP3A4 inhibitor : | Yes |
Log Kp (skin permeation) : | -5.03 cm/s |
Log Po/w (iLOGP) : | 2.83 |
Log Po/w (XLOGP3) : | 3.95 |
Log Po/w (WLOGP) : | 3.47 |
Log Po/w (MLOGP) : | 1.91 |
Log Po/w (SILICOS-IT) : | 4.02 |
Consensus Log Po/w : | 3.24 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -4.38 |
Solubility : | 0.0104 mg/ml ; 0.0000413 mol/l |
Class : | Moderately soluble |
Log S (Ali) : | -4.48 |
Solubility : | 0.00838 mg/ml ; 0.0000332 mol/l |
Class : | Moderately soluble |
Log S (SILICOS-IT) : | -6.26 |
Solubility : | 0.000138 mg/ml ; 0.000000548 mol/l |
Class : | Poorly soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.93 |
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 |
---|---|---|
92% | With malic acid In neat (no solvent) at 140℃; for 0.0833333 h; Microwave irradiation; Green chemistry | General procedure: The mixture of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanedione 1a (0.5 g) and malic acid (1.0 eq.) was heatedeither in an oil bath, preheated at 140 °C for 10 min or in amicrowave reactor for 5 min. After the completion of reaction(TLC check), the reaction mixture was allowed to cool;at room temperature water (10 mL) and ethyl acetate (10mL) were added. Reaction mixture was neutralized by additionof solid NaHCO3. Organic layer was separated and theaqueous layer was extracted in ethyl acetate (2 10 mL).Combined organic extract was dried over anhydrous sodiumsulfate and concentrated in vacuo. The crude product waspurified by column chromatography on silica gel using hexane-ethylacetate solvent system to give the correspondingflavones in high yield. |
91% | With ammonium acetate In neat (no solvent) at 114℃; for 0.0833333 h; Microwave irradiation | General procedure: The mixture of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanedione 1a (0.5 g, 2.08 mmol) and ammonium acetate (0.16 g, 2.08 mmol) was heated either in an oil bath, preheated at 114°C for 10 min or in a microwave reactor for 5min. After the pH of the reaction mixture was brought back to 7.0 by the careful addition of NaHCO3 solution. The aqueous layer was extracted with ethyl acetate, dried(Na2SO4), and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using hexane-ethyl acetate solvent system to give the corresponding flavones in high yield. |
88% | at 180℃; | General procedure: The mixture of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanedione 4a-q (0.5g, 2.08 mmol) and L-ascorbic acid(3.7g, 2.08 mmol) was heated on a preheated oil bath or undermicrowave irradiation at 180 °C for 2-3 min. After completionof reaction (TLC check), the reaction mixture wascooled to room temperature and the flask was sonicated byadding excess water. The crude product was filtered oversuction-pump and washed with excess of water to removeL-ascorbic acid. The solid obtained was dried and crystallizedby using ethanol to give the corresponding flavones inhigh yield. The purity of products was confirmed by satisfactoryspectroscopic data. |
70% | With sodium acetate In acetic acid | EXAMPLE 2 Synthesis of 7-Methoxy-2-phenyl-chromen-4-one (Compound 2) 240 mg (0.89 mmol) of 1-(2-hydroxy-4-methoxy-phenyl)-3-phenyl-propan-1,3-dione was dissolved in acetic acid, and 0.73 g (8.9 mmol) of sodium acetate was added thereto. The mixture was refluxed overnight. Acetic acid was removed by distillation under reduced pressure, and then the residue was purified by silica gel column chromatography (eluent: n-hexane/ethylacetate=5/1, v/v) to give the title compound in a yield of 70percent. 1H NMR (500 MHz, CDCl3): δ 8.20 (m, 1H), 7.91 (m, 2H), 7.55 (m, 3H), 6.97 (m, 3H), 3.90 (s, 3H); MS (FAB): 253 (M+H+). |
57% | at 100℃; for 1 h; | General procedure: Compounds 4a–j (1.8 g) glycerol triacetate (10 mL) and concentrated sulfuric acid (0.4 mL) wereplaced in a round bottomed flask equipped with a reflux condenser, stirred about 1 h at 100 C andthen the mixture was poured into a beaker containing 50 g of crushed ice, where solids were formedafter stirring and then filtered from the solution, Next the solids were washed with water until the acidwas removed. Finally, the solids were purified and separated by column chromatography eluting witha mixed petroleum ether and ethyl acetate solvent until the final products 5a–j were obtained. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With pyrrolidine; iodine In dimethyl sulfoxide at 150℃; for 10 h; | General procedure: 2'-Hydroxyacetophenone (1 mmol) and substituted aromatic aldehyde (1 mmol) were mixed together along with pyrrolidine (0.5 mmol) and iodine (0.05 mmol) in DMSO solvent (10 mL). The resulting mixture was then heated at 150 °C for the given time. After completion of reaction (monitored by TLC) the reaction mass was allowed to cool and diluted with ethyl acetate (20 mL). Resulting solution was then washed with water and saturated sodium thiosulfate solution followed by drying over anhydrous sodium sulfate and concentrating under reduced pressure to furnish the crude product. The residue obtained was purified by column chromatography using petroleum ether-ethyl acetate as an eluent to afford flavones (3a–r). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With dmap In N,N-dimethyl-formamide at 0 - 30℃; for 4 h; Inert atmosphere | General procedure: To a solution of o-alkynoylphenol 3 or 6 in DMF (4 mL/mmol) was added DMAP (10 mol percent) at 0 °C under argon. After being stirred at 30 °C, the reaction mixture was diluted with water. The aqueous layer was extracted twice with ethyl acetate. The organic layer was washed with 1 M HCl, saturated aqueous NaHCO3, brine, dried over MgSO4, and filtered. The filtrate was concentrated in vacuo, and then the resulting residue was purified by column chromatography on silica gel to afford flavone 1 or 7. Spectral data of flavones 1a-1n and 7a-7c have been reported previously10. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | at 70℃; for 6 h; | In 10 ml in the reaction kettle, successively added 0.3183g (3mmol) benzaldehyde, 0.3323g (2mmol) 4-methoxy-2-hydroxy acetophenone and 0.2630g (0.6mmol) of the ionic liquid catalyst [Bmim]2[MoO4] (structural formula refer to embodiment 1), and 0.8170g (8mmol) tetrahydrofururyl alcohol solvent, stirring after mixing, heating to reaction temperature 70 °C, in 0.4 MPa stir to react under oxygen atmosphere 6h, cooled to the room temperature after the reaction, the solvent is removed by reduced pressure distillation after of tetrahydrofurfuryl alcohol, adding ethyl acetate and water extraction, the split-phase, passes through the column again chromatography and recrystallization of relative separation to obtain the target product 7-methoxy-flavone, the yield is 90percent, the nuclear magnetic resonance hydrogen spectrum, carbon spectrum and high-resolution mass spectrometry to determine its structural formula is: |
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