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| CAS No.: | 873-51-8 |
|---|---|
| Name: | PHENYLBORON DICHLORIDE |
| Molecular Structure: | |
|
|
|
| Formula: | C6H5 B Cl2 |
| Molecular Weight: | 158.823 |
| Synonyms: | Borine,dichlorophenyl- (6CI); Dichlorophenylborane; NSC 93889; Phenylboron dichloride;Phenyldichloroborane; Phenyldichloroboron |
| Density: | 1.224 g/mL at 25 °C(lit.) |
| Melting Point: | 7 °C |
| Boiling Point: | 66 °C11 mm Hg(lit.),186.2 °C at 760 mmHg |
| Flash Point: | ?5 °F |
| Solubility: | Soluble in water (Reacts violently). |
| Appearance: | Colourless or yellow transparent liquid. |
| Hazard Symbols: |
F C
|
| Risk Codes: | 11-34-37 |
| Safety: | The hot borane ignites in air. When heated to decomposition it emits toxic fumes of Cl−. See also BORANES. |
| Transport Information: | UN 2924 3 |
| PSA: | 0.00000 |
| LogP: | 1.85940 |

| Conditions | Yield |
|---|---|
| In neat (no solvent) byproducts: ClSi(CH3)3; 60°C, 12h, ampul; | 98% |
| In dichloromethane byproducts: ClSi(CH3)3; in inert atmosphere, dropwise addn. of trimethylphenylsilane to a stirred soln. of BCl3 at -78°C, stirring (-78°C, 1 h), slow warming to room temp.; evapn. in vac. at 30°C.; | 92% |

boron trichloride


diborane


benzene

A

phenylborondichloride

B

hydrogen

| Conditions | Yield |
|---|---|
| byproducts: boron hydride; High Pressure; under N2; diborane and trihalogen-borane was added to benzene at -130°C, then in a closed autoclave the mixture was heated to 130°C for 90 min; at -195.8°C H2 was removed, at room temp. the residue of trihalogen-borane and diborane were removed; | A 46% B 77% |


| Conditions | Yield |
|---|---|
| In octane boroxine was added under Ar to a soln. of AlCl3, the mixt was heated at about 100 °C for 10 h (stirring);; filtration, residue washed with hexane, dried in vac. at 20°C, recrystd. from benzene; elem. anal.;; | A 68% B n/a |


ethylbenzene


boron trichloride


diborane

A

ethyl-dichloro-borane

B

phenylborondichloride

C

(3-ethylphenyl)dichloroborane

D

(4-ethylphenyl)dichloroborane

E

hydrogen

| Conditions | Yield |
|---|---|
| With sodium hydroxide byproducts: benzene, boron hydride, CH3CH2C6H5; High Pressure; under N2; diborane and trihalogen-borane was added to ethylbenzene at -130°C, then in a closed autoclave the mixture was heated to 125°C for 85 min; at -195.8°C H2 was removed, at room temp. the residue of trihalogen-borane and diborane were removed; | A 16% B 4.5% C n/a D n/a E 68% |


| Conditions | Yield |
|---|---|
| iron(III) chloride In dichloromethane byproducts: BCl2(OC2H5); slow addn. of boronate to BCl3 soln. contg. FeCl3 under N2, 0°C, within 10 min; stirring at 0°C, 1 h and at 25°C, 1 h; evapn.; extn. (CH2Cl2); evapn.; distn.; | 67% |

Isopropylbenzene


boron trichloride


diborane

A

dichloro-isopropyl-borane

B

m-Dichlor(isopropylphenyl)boran

C

p-Dichlor(isopropylphenyl)boran

D

phenylborondichloride

E

hydrogen

| Conditions | Yield |
|---|---|
| byproducts: boron hydride, benzene, C3H8; High Pressure; under N2; diborane and trihalogen-borane was added to cumene at -130°C, then in a closed autoclave the mixture was heated to 130°C for 90 min; at -195.8°C H2 was removed, at room temp. the residue of trihalogen-borane and diborane were removed, unseparable isomers; elem. anal.; | A 4% B n/a C n/a D 20% E 61% |


| Conditions | Yield |
|---|---|
| In benzene BCl3 cooled at -78°C and quickly added to Sn(C6H5)4, cooled at 5°C while stirring; warming at ambient temp., boiled for 3.5 h using back-flow; best lab. method; solvent must be distd. below 140°C (immersion thermometer!); crude product distd. between 150-200°C; fractional vac. distn.; | 56% |
| In benzene BCl3 cooled at -78°C and quickly added to Sn(C6H5)4, cooled at 5°C while stirring; warming at ambient temp., boiled for 3.5 h using back-flow; best lab. method; solvent must be distd. below 140°C (immersion thermometer!); crude product distd. between 150-200°C; fractional vac. distn.; | 56% |

| Conditions | Yield |
|---|---|
| In neat (no solvent, solid phase) N2 atmosphere, (room temp., 1E-3 Torr); pptn. (petroleum ether, room temp., 2 d), recrystn. (decane); elem. anal.; | A n/a B 26% |

| Conditions | Yield |
|---|---|
| With hydrogenchloride In dichloromethane-d2 byproducts: B3Cl3O3; under N2, stirred at room temp. for 2 h; decanted in an NMR tube, cooled to -196°C and sealed; NMR, IR, mass spectra; | A 25% B n/a |

| Conditions | Yield |
|---|---|
| With boron trichloride | |
| With phosphorus pentachloride |
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Product Name: Dichlorophenylborane (CAS NO.873-51-8)

Molecular Formula: C6H5BCl2
Molecular Weight: 158.82g/mol
Mol File: 873-51-8.mol
Appearance: Clear colorless liquid
Melting Point: 7 °C
Boiling point: 186.2 °C at 760 mmHg
Storage Temperature: 2-8°C
Flash Point: 66.4 °C
Density: 1.224 g/mL at 25 °C(lit.)
Refractive index: n20/D 1.545(lit.)
Sensitive: Moisture Sensitive
Surface Tension: 29.8 dyne/cm
Enthalpy of Vaporization: 40.52 kJ/mol
Vapour Pressure: 0.92 mmHg at 25°C
Safety Information of Dichlorophenylborane (CAS NO.873-51-8):
Hazard Codes: F
,C ![]()
Risk Statements: 11-34-37
11: Highly Flammable
34: Causes burns
37: Irritating to the respiratory system
Safety Statements: 16-26-36/37/39-45
16: Keep away from sources of ignition - No smoking
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
37: Wear suitable gloves
39: Wear eye/face protection
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
Dichlorophenylborane ,its CAS NO. is 873-51-8,the synonyms is Borane,dichlorophenyl- ; C6h5bcl2 ; Phenyldichloroborane ; Phenylboron dichloride ; Dichlorophenylborane ; Dichlorophenyl boron .