Toxicity data
(The meaning of any toxicological abbreviations which
Safety Statements | 24/25 |
WGK Germany | 3 |
F | 10-23 |
dimethyl 2-methylbenzylphosphonate
terephthalaldehyde,
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol; N,N-dimethyl-formamide at 60℃; for 0.5h; | 35% |
1-chloromethyl-2-methylbenzene
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: CH3ONa / methanol; benzene / 0.5 h / Heating 2: 35 percent / KOH / ethanol; dimethylformamide / 0.5 h / 60 °C View Scheme |
1,4-bis(bromomethyl)benzene
2-methylphenyl aldehyde
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
Stage #1: 1,4-bis(bromomethyl)benzene With triphenylphosphine at 20℃; for 3h; Reflux; Large scale; Stage #2: 2-methylphenyl aldehyde With potassium isopropoxide at 20℃; Reagent/catalyst; Large scale; | 133.6 kg |
diethyl 2-methylbenzylphosphonate
terephthalaldehyde,
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
Stage #1: diethyl 2-methylbenzylphosphonate With sodium hydride In tetrahydrofuran; mineral oil at 0 - 20℃; for 1h; Stage #2: terephthalaldehyde, In tetrahydrofuran; mineral oil at 0℃; for 1h; |
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
A
terephthalaldehyde,
B
2-methylphenyl aldehyde
Conditions | Yield |
---|---|
With oxygen at 130℃; for 12h; Sealed tube; | A 83% B 82% |
With oxygen at 130℃; for 12h; Sealed tube; Overall yield = 89.7 percent; | |
With oxygen at 110℃; for 12h; Green chemistry; |
silver perchlorate monohydrate
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
In toluene under Ar; soln. of Ag salt in toluene added to ligand; stirred for 10 min; layered with n-pentane; sealed under Ar; wrapped with tin foil; crystd. at room temp. in the dark for 3 d; elem. anal.; | 31% |
silver tetrafluoroborate
1,4-bis[2-(2-methyl-phenyl)ethenyl]-benzene
Conditions | Yield |
---|---|
In 1,3,5-trimethyl-benzene under Ar; soln. of Ag salt in mesitylene added to ligand; stirred for 5 min; filtered; filtrate layered with n-pentane; sealed under Ar; wrapped withtin foil; crystd. at room temp. in the dark for 3 d; elem. anal.; | 28% |
IUPAC Name: 1,4-Bis[(E)-2-(2-methylphenyl)ethenyl]benzene
Molecular Formula: C24H22
Molecular Weight: 310.46
Density: 1.076 g/cm3
Properties: yellow-green crystals
Melting Point: 180-182 °C(lit.)
Boiling Point: 463.1 °C at 760 mmHg
Flash Point: 231.3 °C
Freely Rotating Bonds: 4
Polar Surface Area: 0 Å2
Index of Refraction: 1.693
Molar Refractivity: 110.69 cm3
Molar Volume: 288.3 cm3
Polarizability: 43.88× 10-24 cm3
Surface Tension: 46.2 dyne/cm
Enthalpy of Vaporization: 69.66 kJ/mol
Vapour Pressure: 2.58E-08 mmHg at 25°C
Stability: Stable. Incompatible with strong oxidizing agents.
The Cas Register Number of 4-Bis(2-methylstyryl)benzene is 13280-61-0.The chemical synonyms of 4-Bis(2-methylstyryl)benzene (CAS NO.13280-61-0) are 1,4-Di(2-methylstyryl)benzene ; 1,4-Bis(2-methylstyryl)benzene ; Bis(msb) ;1 ,4-bis[2-(2-methylphenyl)ethenyl]-benzen ; 1,4-Bis[2-(2-methylphenyl)ethenyl]-Benzene ; Benzene,1,4-bis[2-(2-methylphenyl)ethenyl]-;p-bis(o-methylstyryl)benzene ; 2-Menthylstyrene .Product categories of 4-Bis(2-methylstyryl)benzene (CAS NO.13280-61-0) are Scintillators ; Stilbenes .The molecular structure of 4-Bis(2-methylstyryl)benzene (CAS NO.13280-61-0) is.
4-Bis(2-methylstyryl)benzene (CAS NO.13280-61-0) is used in organic synthesis.
Its raw materials are N,N-Dimethylformamide ; Trimethyl phosphite ; 1,4-Phthalaldehyde ; 2-Methylbenzyl bromide .
Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: Xn
Safety Statements: 24/25-36-26
S24/25: Avoid contact with skin and eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
WGK Germany: 3
F: 10-23
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