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alpha-Naphthofluorene
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Name

alpha-Naphthofluorene

 EINECS N/A
CAS No. 238-84-6 Density 1.185g/cm3
PSA 0.00000 LogP 4.41100
Solubility 45ug/L(25 oC) Melting Point 185-190 °C
Formula C17H12 Boiling Point 398.3°Cat760mmHg
Molecular Weight 216.282 Flash Point 185.4°C
Transport Information N/A Appearance N/A
Safety Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors. Risk Codes 11-23/24/25-39/23/24/25
Molecular Structure Molecular Structure of 238-84-6 (1,2-BENZOFLUORENE) Hazard Symbols
Synonyms

1,2-Benzofluorene;Benzo[a]fluorene; Chrysofluorene; NSC 89262

Article Data 52

alpha-Naphthofluorene Synthetic route

11H-benzo[a]fluorene-11-carboxylic acid methyl ester

11H-benzo[a]fluorene-11-carboxylic acid methyl ester

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With potassium hydroxide In methanol for 4h; Heating;89%
90-11-9

1-Bromonaphthalene

501-65-5

diphenyl acetylene

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
Stage #1: 1-Bromonaphthalene; diphenyl acetylene With 1,8-diazabicyclo[5.4.0]undec-7-ene; cesium pivalate; 1,2-bis-(diphenylphosphino)ethane; palladium dichloride In 1,4-dioxane at 130℃; for 24h; Sealed tube; Inert atmosphere;
Stage #2: With 18-crown-6 ether; potassium tert-butylate; hydrazine hydrate; potassium hydroxide In 1,4-dioxane at 110℃; for 12h; Temperature; Inert atmosphere; Sealed tube;		88%
114325-52-9

C17H14O

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With hydrogen cation85%
With hydrogenchloride In ethanol for 24h; Heating;20 mg
108-86-1

bromobenzene

20199-29-5

bis(1-naphthyl)acetylene

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
Stage #1: bromobenzene; bis(1-naphthyl)acetylene With 1,8-diazabicyclo[5.4.0]undec-7-ene; cesium pivalate; 1,2-bis-(diphenylphosphino)ethane; palladium dichloride In 1,4-dioxane at 130℃; for 24h; Sealed tube; Inert atmosphere;
Stage #2: With 18-crown-6 ether; potassium tert-butylate; hydrazine hydrate; potassium hydroxide In 1,4-dioxane at 110℃; for 12h; Inert atmosphere; Sealed tube;		80%

trimethyl[2-(naphthalen-1-ylmethyl)phenyl]silane

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With (R)-10-camphorsulfonic acid; tetrahydrothiophene gold(III) bromide; bis-[(trifluoroacetoxy)iodo]benzene In methanol; chloroform at 27℃; for 1h; Schlenk technique; Inert atmosphere;80%
78649-20-4

2',3'-Dihydro-1,1'-spirobiinden

A

238-84-6

benzo[a]fluorene

B

78649-21-5

6,11-dihydro-5H-benzofluorene

Conditions
ConditionsYield
In diphenylether at 200℃;A 7%
B 79%
In cyclohexane at 10℃; Irradiation;A 13%
B 74%
1086-09-5

(+/-)-11-hydroxy-11H-benzo[a]fluorene

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With hydrogen iodide; acetic acid
60599-30-6

5-hydroxy-benzo[a]fluoren-11-one

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With zinc
With zinc bei der Destillation;
137675-27-5

11a-methyl-6,6a,11,11a-tetrahydro-5H-benzo[a]fluorene

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With selenium at 310 - 320℃;
109695-76-3

11H-benzo[a]fluorene-11-carboxylic acid

238-84-6

benzo[a]fluorene

Conditions
ConditionsYield
With N,N-dimethyl-formamide

alpha-Naphthofluorene Chemical Properties

IUPAC Name:11H-Benzo[a]fluorene
Synonyms: 11H-benzo[a]fluorene ; a-Naphthofluorene ; Benzo(a)fluorene ; 1,2-Benzofluorene ; 11H-Benzo(a)fluorene ; 11H-Benzo[a]fluorene solution
CAS NO: 238-84-6
Molecular Formula of alpha-Naphthofluorene (CAS NO.238-84-6) : C17H12
Molecular Weight of alpha-Naphthofluorene (CAS NO.238-84-6) : 216.28
Molecular Structure of alpha-Naphthofluorene (CAS NO.238-84-6) :
EINECS: 205-944-9
Mol File: 238-84-6.mol
Index of Refraction: 1.714
Surface Tension: 52.2 dyne/cm
Density: 1.185 g/cm3
Flash Point: 185.4 °C
Enthalpy of Vaporization: 62.35 kJ/mol
Boiling Point: 398.3 °C at 760 mmHg
Vapour Pressure: 3.43E-06 mmHg at 25°C
Melting point: 185-190 °C

alpha-Naphthofluorene Toxicity Data With Reference

1.    

mma-sat 50 µg/plate

     MUREAV    Mutation Research. 174 (1986),247.

alpha-Naphthofluorene Consensus Reports

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 32 ,1983,p. 177.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human No Adequate Data IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 32 ,1983,p. 177.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210)

alpha-Naphthofluorene Safety Profile

Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors.
Hazard Codes FlammableF,ToxicT
Risk Statements 11-39-23/24/25
R11:Highly flammable. 
R39:Danger of very serious irreversible effects. 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
Safety Statements 36/37-45
S36/37:Wear suitable protective clothing and gloves. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)  
RIDADR 2811
WGK Germany 3
RTECS DF6382000
HazardClass 6.1(b)
PackingGroup III

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