| Identification | More | [Name]
2,2'-DIBROMO-1,1'-BINAPHTHYL | [CAS]
74866-28-7 | [Synonyms]
2,2'-DIBROMO-1,1'-BINAPHTHYL
2,2'-DIBROMO-1,1'-DINAPHTHYL
RACEMIC-2,2'-DIBROMO-1,1'-BINAPHTHYL
rac-2,2'-Dibromo-1,1'-binaphthyl,
rac-2,2'-Dibromo-1,1'-binaphthyl,99%
2,2'-Dibromo-1,1'-binapthyl
racemic-2,2'-Dibromo-1,1'-binaphthyl,99%
1,1'-Bi(2-bromonaphthalene)
2,2'-Dibromo-1,1'-binaphthalene | [EINECS(EC#)]
626-733-1 | [Molecular Formula]
C20H12Br2 | [MDL Number]
MFCD00188005 | [Molecular Weight]
412.12 | [MOL File]
74866-28-7.mol |
| Chemical Properties | Back Directory | [Melting point ]
178-183 °C | [Boiling point ]
178-183°C | [density ]
1.614±0.06 g/cm3(Predicted) | [Fp ]
178-183°C | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
soluble in Toluene | [form ]
Powder | [color ]
white to off-white | [Water Solubility ]
Sparingly Soluble in water. | [Detection Methods]
HPLC | [CAS DataBase Reference]
74866-28-7(CAS DataBase Reference) | [Storage Precautions]
Moisture sensitive |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R22:Harmful if swallowed. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [WGK Germany ]
3 | [HS Code ]
2903.99.8001 |
| Hazard Information | Back Directory | [Uses]
The synthesis of this class of compounds relies on the lithiation of racemic 2,2'-dibromo-1,1'-binaphthyl with t-BuLi followed by addition of Ph 2 PCl. | [Purification Methods]
Purify the binaphthyl by chromatography through a silica gel column (70-230mesh) using hexane as eluent. It gives pale yellow crystals from EtOH with m 187.3-187.9o. The R-(+)-enantiomer [86688-08-6] crystallises from hexane with m 157-157.5o and [] D +32.9o (c 1, pyridine) [Brown et al. J Org Chem 50 4345 1985]. [Okamoto et al. J Am Chem Soc 103 69711981, Beilstein 5 III 2465.] |
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