alpha-Naphthofluorene supplier

Name
1,2-BENZOFLUORENE
EINECS
CAS No. 238-84-6
Article Data52
CAS DataBase
Density 1.185g/cm³
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
Appearance
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
Hazard Symbols
Synonyms 1,2-Benzofluorene;Benzo[a]fluorene; Chrysofluorene; NSC 89262
PSA 0.00000
LogP 4.41100

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

Conditions	Yield
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

Conditions	Yield
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%

Yield

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

Conditions	Yield
With hydrogen cation	85%
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

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
With hydrogen iodide; acetic acid

: 60599-30-6
5-hydroxy-benzo[a]fluoren-11-one

: 238-84-6
benzo[a]fluorene

Conditions

Conditions	Yield
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

Conditions	Yield
With selenium at 310 - 320℃;

: 109695-76-3
11H-benzo[a]fluorene-11-carboxylic acid

: 238-84-6
benzo[a]fluorene

Conditions

Conditions	Yield
With N,N-dimethyl-formamide

: 2051-10-7
5,6-chrysenedione

: 238-84-6
benzo[a]fluorene

Conditions

Conditions	Yield
With soda lime
Multi-step reaction with 3 steps 1: alkali 2: chromic acid mixture 3: concentrated hydriodic acid; red phosphorus View Scheme

: 98470-83-8
1,2;4,5-Bis-tetramethylen-inden-(1)

: 238-84-6
benzo[a]fluorene

Conditions

Conditions	Yield
With palladium on activated charcoal

: 1182-03-2
1,2-Benzo-fluorenon-azin

: 238-84-6
benzo[a]fluorene

Conditions

Conditions	Yield
With hydrazine

: 36736-96-6
10,11-dihydro-5,10-ethano-5H-dibenzocyclohepten-12-ol

A: 238-84-6
benzo[a]fluorene

B: 23416-98-0
9,10-Dihydro-9,10-propenoanthracene

C: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

D: 78649-21-5
6,11-dihydro-5H-benzofluorene

Conditions

Conditions	Yield
With boric acid at 250℃; under 1 Torr; for 0.5h; Yield given. Yields of byproduct given;

...Expand

: 36736-96-6
10,11-dihydro-5,10-ethano-5H-dibenzocyclohepten-12-ol

A: 238-84-6
benzo[a]fluorene

B: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

C: 78649-21-5
6,11-dihydro-5H-benzofluorene

D: 140710-60-7
11,11a-dihydro-6aH-benzofluorene

Conditions

Conditions	Yield
With boric acid at 250℃; under 1 Torr; for 0.5h; Yield given. Yields of byproduct given;

...Expand

: 52703-44-3
2:3,6:7-Dibenzobicyclo[6.1.0]nona-2,4,6-trien

A: 238-84-6
benzo[a]fluorene

B: 78649-21-5
6,11-dihydro-5H-benzofluorene

: 11,11a-dihydro-6aH-benzofluorene

Conditions

Conditions	Yield
at 600℃; under 1 Torr; Product distribution; Mechanism; var. temperature;

...Expand

: 23416-98-0
9,10-Dihydro-9,10-propenoanthracene

A: 120-12-7
anthracene

B: 238-84-6
benzo[a]fluorene

C: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

D: 78649-21-5
6,11-dihydro-5H-benzofluorene

Conditions

Conditions	Yield
at 550℃; Yield given. Further byproducts given. Yields of byproduct given;

...Expand

: 23416-98-0
9,10-Dihydro-9,10-propenoanthracene

A: 120-12-7
anthracene

B: 238-84-6
benzo[a]fluorene

C: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

D: 78649-21-5
6,11-dihydro-5H-benzofluorene

E: 140710-60-7
11,11a-dihydro-6aH-benzofluorene

Conditions

Conditions	Yield
at 550℃; under 1 Torr; Product distribution; Mechanism; other dibenzohydrocarbons, other temperatures;

...Expand

: 23416-98-0
9,10-Dihydro-9,10-propenoanthracene

A: 238-84-6
benzo[a]fluorene

B: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

C: 78649-21-5
6,11-dihydro-5H-benzofluorene

D: 140710-60-7
11,11a-dihydro-6aH-benzofluorene

Conditions

Conditions	Yield
at 550℃; Yield given. Yields of byproduct given;

...Expand

: 24330-16-3
11-Acetoxy-9,10-propano-9,10-dihydroanthracene

A: 120-12-7
anthracene

B: 238-84-6
benzo[a]fluorene

C: 23416-98-0
9,10-Dihydro-9,10-propenoanthracene

D: 19978-15-5
1,1a,6,10b-Tetrahydro-1,6-methano-dibenzocyclopropacycloheptene

Conditions

Conditions	Yield
at 650℃; under 1 Torr; Yield given. Further byproducts given. Yields of byproduct given;

...Expand

: 130727-57-0
(E,E,E)-1,7-diphenyl-1,3,5-heptatriene

: benzofluorene cesium salt

A: 238-84-6
benzo[a]fluorene

B: 153788-45-5
C19H17Cs

Conditions

Conditions	Yield
In tetrahydrofuran at 25℃; Thermodynamic data; ΔH0, ΔS0;

...Expand

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

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 F, Toxic T
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

Product Name

1,2-BENZOFLUORENE

Synthetic route

alpha-Naphthofluorene Chemical Properties

alpha-Naphthofluorene Toxicity Data With Reference

alpha-Naphthofluorene Consensus Reports

alpha-Naphthofluorene Safety Profile

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