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525-82-6

Basic Information
CAS No.: 525-82-6
Name: 4H-1-Benzopyran-4-one,2-phenyl-
Molecular Structure:
Molecular Structure of 525-82-6 (4H-1-Benzopyran-4-one,2-phenyl-)
Formula: C15H10O2
Molecular Weight: 222.07
Synonyms: 2-Phenyl-4H-1-benzopyran-4-one;2-Phenyl-4H-chromen-4-one;2-Phenyl-g-benzopyrone;Chromocor;NSC 19028;
EINECS: 208-383-8
Density: 1.24 g/cm3
Melting Point: 94-97 °C(lit.)
Boiling Point: 367.013 °C at 760 mmHg
Flash Point: 171.058 °C
Solubility: Soluble in acetone (25 mg/ml), methanol, alcohol, and chloroform. Insoluble in water.
Appearance: white crystalline powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36
Transport Information:
PSA: 30.21000
LogP: 3.46000
Synthetic route
1469-94-9

1-(2-hydroxyphenyl)-3-phenyl-1,3-propanedione

525-82-6

FLAVONE

Conditions
ConditionsYield
copper dichloride In ethanol at 80℃; for 0.0833333h; microwave irradiation;98%
With potassium hydrogensulfate at 120℃; for 2h; Temperature; Green chemistry;98%
With gallium(III) triflate In nitromethane at 80℃; for 2h;97%
533-58-4

2-Iodophenol

201230-82-2

carbon monoxide

536-74-3

phenylacetylene

525-82-6

FLAVONE

Conditions
ConditionsYield
With C22H28Br2N4Pd; diethylamine In N,N-dimethyl-formamide at 80℃; under 3000.3 Torr; for 24h; Autoclave;98%
With diethylamine In N,N-dimethyl-formamide at 100℃; under 10343.2 Torr; for 24h; Sonogashira Cross-Coupling; Autoclave;96%
With (trihexyl)(tetradecyl)phosphonium bromide; triethylamine; palladium dichloride at 110℃; under 760.051 Torr; for 24h; Autoclave;95%
100-52-7

benzaldehyde

582-24-1

1-phenyl-2-hydroxyethanone

525-82-6

FLAVONE

Conditions
ConditionsYield
With 1-butyl-3-methylimidazolium molybdate In hexan-1-ol at 70℃; for 3h;98%
487-26-3

Flavanone

525-82-6

FLAVONE

Conditions
ConditionsYield
With pyrrolidone hydrotribromide In dimethyl sulfoxide at 80℃; for 2h;97%
With thallium(III) acetate In acetic acid for 3h; Heating;96%
With thallium(III) acetate In acetic acid for 3h; Heating;96%
888-12-0

(E)-2'-hydroxy-chalcone

525-82-6

FLAVONE

Conditions
ConditionsYield
With indium(III) bromide; silica gel at 130 - 140℃; for 0.75h;96%
With iodine In dimethyl sulfoxide for 1h; Reflux;85%
With iodine In 2,2'-[1,2-ethanediylbis(oxy)]bisethanol at 150℃; for 4h; Product distribution; Further Variations:; Solvents; Temperatures; reaction times;83%
16619-68-4

1-(2-hydroxyphenyl)-3-phenylprop-2-yn-1-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With dmap In N,N-dimethyl-formamide at 0 - 30℃; for 1.5h; Morita-Baylis-Hillman reaction; Inert atmosphere; regioselective reaction;96%
With thallium(III) toluene-p-sulfonate In methanol at 65℃; for 6h; Reagent/catalyst; Solvent; Time; regioselective reaction;91%
With lithium tert-butoxide In N,N-dimethyl-formamide at 20℃; for 0.166667h; Reagent/catalyst; Time; Temperature;90%
81995-11-1

1-(2-hydroxyphenyl)-2-(triphenylphosphoranylidene)ethanone

98-88-4

benzoyl chloride

525-82-6

FLAVONE

Conditions
ConditionsYield
With pyridine In toluene for 5h; Heating;96%
1214-47-7

1-(2-hydroxyphenyl)-3-phenylprop-2-en-1-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With Iodine monochloride; dimethyl sulfoxide at 50℃; for 0.5h; Temperature; Reagent/catalyst; Sonication; Green chemistry;96%
With cerium (IV) sulfate tetrahydrate; silica gel In neat (no solvent) at 100℃; for 4h; Concentration; Time; Green chemistry;94%
With copper(l) iodide; oxygen at 50℃; under 760.051 Torr; for 48h; oxa-Michael-oxidation; Ionic liquid;92%
223511-19-1

1-[2-(tert-butyldimethylsilyloxy)phenyl]-3-phenylprop-2-yn-1-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With diethylamine In ethanol for 24h; Heating;96%
16619-51-5

2'-allyloxychalcone

525-82-6

FLAVONE

Conditions
ConditionsYield
With iodine In dimethyl sulfoxide at 120℃; for 0.5h; regioselective reaction;96%
Multi-step reaction with 2 steps
1: acetic acid / 24 h / 20 °C
2: iodine / dimethyl sulfoxide / 0.5 h / 130 °C
View Scheme
491-37-2

2,3-dihydro-4H-1-benzopyran-4-one

98-80-6

phenylboronic acid

525-82-6

FLAVONE

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 5-Nitro-1,10-phenanthroline; oxygen In dimethyl sulfoxide at 100℃; for 48h; Reagent/catalyst; Solvent;96%
16619-68-4

1-(2-hydroxyphenyl)-3-phenylprop-2-yn-1-one

A

525-82-6

FLAVONE

B

36685-41-3

(Z)-4'-methoxyaurone

Conditions
ConditionsYield
With silver nitrate In methanol Ambient temperature;A 5%
B 95%
16619-68-4

1-(2-hydroxyphenyl)-3-phenylprop-2-yn-1-one

A

525-82-6

FLAVONE

B

37542-14-6

aurone

Conditions
ConditionsYield
With silver nitrate In methanol Ambient temperature;A 5%
B 95%
With 2-pyridone sodium salt In tetrahydrofuran at 20℃; for 6h; Reagent/catalyst; Solvent; Temperature; Time; regioselective reaction;A 3%
B 93%
With tricyclohexylphosphine In ethanol at 30℃; for 2h;A n/a
B 55%
16619-67-3

1-(2-acetoxy-phenyl)-3-phenyl-2-propyn-1-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With piperazine In acetonitrile at 25℃; for 3h; Schlenk technique;95%
With piperazine In acetonitrile at 20℃; for 6h; Schlenk technique;95%
With 18-crown-6 ether; potassium methanolate In tetrahydrofuran at 20℃; for 0.25h; Reagent/catalyst; Time; Temperature; Solvent;76%
13463-40-6

iron pentacarbonyl

533-58-4

2-Iodophenol

536-74-3

phenylacetylene

525-82-6

FLAVONE

Conditions
ConditionsYield
With piperazine; palladium diacetate In acetonitrile at 50℃; for 12h; Schlenk technique;95%
93514-42-2, 6053-99-2

2-phenylchromene

525-82-6

FLAVONE

Conditions
ConditionsYield
With tert.-butylhydroperoxide; copper(ll) bromide In decane; toluene at 80℃; for 0.0833333h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere;94%
With thallium(III) nitrate In methanol Ambient temperature; overnight;20%
491-38-3

1-benzopyran-4(4H)-one

98-80-6

phenylboronic acid

525-82-6

FLAVONE

Conditions
ConditionsYield
Stage #1: 1-benzopyran-4(4H)-one; phenylboronic acid With iron(III) trifluoromethanesulfonate; palladium diacetate; Trimethylacetic acid at 60℃; under air;
Stage #2: With potassium nitrite; 2,3-dicyano-5,6-dichloro-p-benzoquinone
94%
Stage #1: 1-benzopyran-4(4H)-one With 1,10-Phenanthroline; oxygen; palladium diacetate In N,N-dimethyl-formamide for 0.0833333h; Heck type reaction;
Stage #2: phenylboronic acid In N,N-dimethyl-formamide at 100℃; for 24h; Heck type reaction; regioselective reaction;
86%
491-37-2

2,3-dihydro-4H-1-benzopyran-4-one

24388-23-6

2-phenyl-4,4,5,5-tetramethyl-1,3,2-dioxoborole

525-82-6

FLAVONE

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 5-Nitro-1,10-phenanthroline; oxygen In dimethyl sulfoxide at 100℃; for 48h;93%
With palladium(II) trifluoroacetate; 5-Nitro-1,10-phenanthroline; oxygen In dimethyl sulfoxide at 100℃; Heck Reaction;93%
36695-24-6

2'-benzyloxy-2-bromo-acetophenone

A

525-82-6

FLAVONE

B

4010-33-7

2-acetylphenyl benzoate

Conditions
ConditionsYield
pyrex In benzene Irradiation;A 4%
B 92%
32865-61-5

2-iodophenyl acetate

201230-82-2

carbon monoxide

536-74-3

phenylacetylene

525-82-6

FLAVONE

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene; diethylamine; thiourea; bis-triphenylphosphine-palladium(II) chloride; 1,3-bis-(diphenylphosphino)propane at 40℃; for 48h; Addition; cyclization;92%
98153-12-9

3-iodo-2-phenyl-4H-1-benzopyran-4-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With sodium formate; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 90℃;92%
With copper(l) iodide; potassium carbonate; isopropyl alcohol at 90℃; for 12h; Green chemistry; regioselective reaction;92%
137527-18-5

4-oxo-2-phenyl-4H-chromen-6-yl 4-methylbenzenesulfonate

525-82-6

FLAVONE

Conditions
ConditionsYield
With dimethylamine borane; potassium carbonate; triphenylphosphine; nickel In N,N-dimethyl-formamide at 120℃; for 12h;92%
1025-86-1

3-bromo-2-phenyl-chromen-4-one

525-82-6

FLAVONE

Conditions
ConditionsYield
With copper(l) iodide; potassium carbonate; isopropyl alcohol at 90℃; for 12h; Catalytic behavior; Reagent/catalyst; Green chemistry; regioselective reaction;92%
67139-31-5

trans-3-mesyloxyflavanone

A

525-82-6

FLAVONE

B

37542-14-6

aurone

Conditions
ConditionsYield
With dibutylamine In dimethyl sulfoxide for 72h; Ambient temperature;A 91.5%
B 6.2%
With sodium acetate In dimethyl sulfoxide at 25℃; for 144h;A 80.1%
B 10.9%
With sodium acetate In dimethyl sulfoxide at 25℃; for 144h; Product distribution; other reaction temperatures, solvents, reaction time, reagents, catalists, other amount of catalists and use other 3-mesyloxy-flavanone;A 80.1%
B 10.9%
With potassium cyanate; 18-crown-6 ether In benzene for 21h; Heating;A 31.3%
B 48%
With isopropylamine In dimethyl sulfoxide for 72h; Ambient temperature;A 57.5 % Spectr.
B 32.9 % Spectr.
98153-26-5

1-(2-Hydroxy-4-methoxyphenyl)-3-phenylpropyn-1-one

A

525-82-6

FLAVONE

B

22395-22-8

7-methoxoyflavone

Conditions
ConditionsYield
With silver nitrate In methanol Ambient temperature;A 91%
B n/a
108378-93-4

3-<(4-Methylphenyl)sulphinyl>-4H-1-benzopyran-4-one

phenylmagnesium bromide

525-82-6

FLAVONE

Conditions
ConditionsYield
With copper(I) bromide dimethylsulfide complex In tetrahydrofuran at -78 - 0℃; for 2.5h;91%
36081-80-8

1-(2'-bromophenyl)-3-phenylpropane-1,3-dione

525-82-6

FLAVONE

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 100℃; for 1h; Ullmann type reaction; under air;91%
With tert-butylisonitrile; palladium diacetate; potassium carbonate; bis[2-(diphenylphosphino)phenyl] ether In N,N-dimethyl-formamide at 120℃; for 2h; Reagent/catalyst; Solvent; chemoselective reaction;86%
1657006-73-9

C18H16Br2O2

525-82-6

FLAVONE

Conditions
ConditionsYield
With iodine In dimethyl sulfoxide at 130℃; for 0.5h;91%
5465-04-3

4-thioflavone

525-82-6

FLAVONE

Conditions
ConditionsYield
With Clayfen for 0.025h; microwave irradiation;90%
With tetraethylammonium perchlorate; ethidium Bromide In N,N-dimethyl-formamide cathodic reduction;
With air In ethanol at 20℃; Photolysis;
75630-53-4

2'-hydroxychalcone dichloride

525-82-6

FLAVONE

Conditions
ConditionsYield
at 210 - 220℃; for 1.5h;90%
525-82-6

FLAVONE

134051-30-2

1a,7a-Dihydro-1a-phenyl-7H-oxireno<1>benzopyran-7-one

Conditions
ConditionsYield
With 3,3-dimethyldioxirane In dichloromethane; acetone at 0℃; for 36h;100%
With 3,3-dimethyldioxirane In dichloromethane; acetone at 0℃; for 36h;100%
With Oxone; 1,1,1-trifluoro-2-propanone; edetate disodium; sodium hydrogencarbonate In acetonitrile at 0 - 1℃; for 1.25h;99%
525-82-6

FLAVONE

407-47-6

2,2,2-trifluoroethyl acrylate

2,2,2-trifluoroethyl (E)-3-(2-phenyl-4-oxo-4H-chromen-5-yl)acrylate

Conditions
ConditionsYield
With silver hexafluoroantimonate; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; copper(II) acetate monohydrate In tert-Amyl alcohol at 20 - 100℃; for 12.33h; Schlenk technique; Sealed tube; regioselective reaction;99%
Conditions
ConditionsYield
Stage #1: FLAVONE With Dimethylphenylsilane; C50H52N2; bis(pentafluorophenyl)borohydride In toluene at 20℃; for 1h; Inert atmosphere; Glovebox;
Stage #2: With trifluoroacetic acid In toluene at 20℃; for 0.166667h; Inert atmosphere; Glovebox; enantioselective reaction;
A n/a
B 99%
525-82-6

FLAVONE

56-53-1

diethylstilbestrol

C18H20O2*2C15H10O2

Conditions
ConditionsYield
In methanol at 20℃; Solvent;98.72%
525-82-6

FLAVONE

13178-98-8

3-chloro-2-phenyl-chromen-4-one

Conditions
ConditionsYield
With sulfuryl dichloride; Montmorillonite-K-10 clay In dichloromethane for 0.25h; Ambient temperature;98%
With pyridine; chloro-trimethyl-silane; [bis(acetoxy)iodo]benzene In dichloromethane at 0℃; for 3.5h;82%
With sulfuryl dichloride In tetrachloromethane63%
525-82-6

FLAVONE

71840-34-1, 71840-35-2, 82908-23-4

(2R*,2’R*)-2,2’-diphenyl-[2,2’-bichromane]-4,4’-dione

Conditions
ConditionsYield
With samarium diiodide In tetrahydrofuran; methanol at -40℃; for 24h; Reagent/catalyst; Temperature; Solvent; Inert atmosphere; stereoselective reaction;98%
525-82-6

FLAVONE

71840-35-2

(2R*,2’S*)-2,2’-diphenyl-[2,2’-bichromane]-4,4’-dione

Conditions
ConditionsYield
With samarium diiodide In tetrahydrofuran; methanol at 68℃; for 24h; Inert atmosphere; stereoselective reaction;98%
525-82-6

FLAVONE

98153-13-0

3-Mercapto-2-phenyl-4H-1-benzopyran-4-one

Conditions
ConditionsYield
With sulfur; lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 0.583333h;97%
Conditions
ConditionsYield
With methanol; sodium tetrahydroborate; cobalt(II) 5,10,15,20-tetraphenylporphyrin; oxygen at 20℃; for 0.166667h; Kinetics; Reagent/catalyst; Time;97%
525-82-6

FLAVONE

2-phenylchromanol

Conditions
ConditionsYield
With sodium tetrahydroborate In methanol at 20℃; for 3h; Inert atmosphere;95%
941-55-9

4-toluenesulfonyl azide

525-82-6

FLAVONE

1607017-87-7

4-methyl-N-(4-oxo-2-phenyl-4H-chromen-5-yl)benzenesulfonamide

Conditions
ConditionsYield
With bis[dichloro(pentamethylcyclopentadienyl)iridium(III)]; lithium carbonate; acetic acid; silver(I) triflimide In 1,2-dichloro-ethane at 25℃; for 12h; Inert atmosphere;95%
525-82-6

FLAVONE

19726-12-6

3-(2-hydroxyphenyl)-5-phenyl-pyrazole

Conditions
ConditionsYield
With hydrazine hydrate In ethanol at 90℃;95%
930-88-1

N-methylmaleimide

525-82-6

FLAVONE

1-methyl-3-(4-oxo-2-phenyl-4H-chromen-5-yl)pyrrolidine-2,5-dione

Conditions
ConditionsYield
With silver hexafluoroantimonate; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; Trimethylacetic acid In 1,2-dichloro-ethane at 80℃; for 20h; Sealed tube;94%
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    525-82-6

    Flavone

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  • Flavone     CAS: 525-82-6

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    525-82-6

    Flavone CAS: 525-82-6

    Min.Order: 5 Metric Ton

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    Product Name FLAVONE CAS 525-82-6 MF C15H10O2 MW 222.24 EINECS 208-383-8 Product Categories Biochemistry;Flavonoids;Building block;Inhibitors Appearance: white powder Storage:Store in cool and dry place, away from sun light. Package:

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  • TIANFU-CHEM CAS:525-82-6 FLAVONE

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    525-82-6

    TIANFU-CHEM CAS:525-82-6 FLAVONE

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    FLAVONE Basic information Product Name: FLAVONE Synonyms: FLAVONE;2-PHENYLCHROME;2-PHENYLCHROMONE;2-PHENYL-4H-CHROMEN-4-ONE;2-PHENYL-4H-1-BENZOPYRAN-4-ONE;2-Phenyl-4-chromone;2-phenyl-4h

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  • Casno:

    525-82-6

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  • 4H-1-Benzopyran-4-one,2-phenyl- 525-82-6

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    525-82-6

    4H-1-Benzopyran-4-one,2-phenyl- 525-82-6

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  • FLAVONE CAS 525-82-6

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    525-82-6

    FLAVONE CAS 525-82-6

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  • Casno:

    525-82-6

    Good Quality Lotus leaf Extract

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  • Flavone

  • Casno:

    525-82-6

    Flavone

    Min.Order: 1 Kilogram

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Chemistry

Synonyms :2-Phenyl-4H-1-benzopyran-4-one; 2-Phenylchromone
MF: C15H10O2
MW: 222.24
EINECS: 208-383-8
2-PHENYLCHROMONE(525-82-6),its melting point is about  94-97 °C(lit.),boiling point is  185 °C / 1mmHg .
Following is the molecular structure of 2-PHENYLCHROMONE(525-82-6):

Toxicity Data With Reference

1.   

dni-hmn:fbr 100 mg/L

   BCPCA6    Biochemical Pharmacology. 33 (1984),3823.
2.   

orl-mus LD50:2500 mg/kg

   JHTCAO    Journal of Heterocyclic Chemistry. 21 (1984),193.
3.   

ipr-mus LD50:380 mg/kg

   FRPSAX    Farmaco, Edizione Scientifica. 13 (1958),561.
4.   

scu-mus LD >400 mg/kg

   ANTCAO    Antibiotics and Chemotherapy. 3 (1953),603.

RTECS : DJ3100630

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion and subcutaneous routes. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors.

Other safty informations about 2-PHENYLCHROMONE(525-82-6):
Hazard Codes:  Xi (Irritant)
Risk Statements 
R 36/37/38 (Irritating to eyes, respiratory system and skin )
Safety Statements :
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36 :Wear suitable protective clothing
WGK Germany : 2