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525-82-6

Basic Information
CAS No.: 525-82-6
Name: 4H-1-Benzopyran-4-one,2-phenyl-
Article Data: 312
Cas Database
Molecular Structure:
Molecular Structure of 525-82-6 (4H-1-Benzopyran-4-one,2-phenyl-)
Formula: C15H10O2
Molecular Weight: 222.243
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: N/A
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
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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