2,2'-DIBROMO-1,1'-BINAPHTHYL
- CAS NO.：74866-28-7
- Empirical Formula: C20H12Br2
- Molecular Weight: 412.12
- MDL number: MFCD00188005
- EINECS: 626-733-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:46
What is 2,2'-DIBROMO-1,1'-BINAPHTHYL?
The Uses of 2,2'-DIBROMO-1,1'-BINAPHTHYL
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.]
Properties of 2,2'-DIBROMO-1,1'-BINAPHTHYL
| Melting point: | 178-183 °C |
| Boiling point: | 178-183°C |
| Density | 1.614±0.06 g/cm3(Predicted) |
| Flash point: | 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. |
| CAS DataBase Reference | 74866-28-7(CAS DataBase Reference) |
Safety information for 2,2'-DIBROMO-1,1'-BINAPHTHYL
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H413:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. |
Computed Descriptors for 2,2'-DIBROMO-1,1'-BINAPHTHYL
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