TRANS-TOLUYLENE
Diphenylethylenediamine
CAS: 16635-95-3
Molecular Formula: C14H16N2
TRANS-TOLUYLENE - Names and Identifiers
| Name | Diphenylethylenediamine |
| Synonyms | TRANS-STILBENE TRANS-TOLUYLENE TRANS-BIBENZYLIDENE Diphenylethylenediamine TRANS-A B-DIPHENYLETHYLENE TRANS-1,2-DIPHENYLETHYLENE 1,2-Diphenylethylenediamine 1,2-diphenylethane-1,2-diamine (±)-1,2-Diphenylethylenediamine DL-1,2-Diphenyl-1,2-ethanediamine TRANS-1,1'-(1,2-ETHENEDYL)BIS(BENZENE) (1R,2R)-1,2-diphenylethane-1,2-diamine TRANS-1,1'-(1,2-ETHENEDIYL)BIS(BENZENE) |
| CAS | 16635-95-3 |
| EINECS | 605-438-1 |
| InChI | InChI=1/C14H16N2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10,13-14H,15-16H2/t13-,14-/m1/s1 |
TRANS-TOLUYLENE - Physico-chemical Properties
| Molecular Formula | C14H16N2 |
| Molar Mass | 212.29 |
| Density | 0.97g/mLat 25°C(lit.) |
| Melting Point | 123-125°C(lit.) |
| Boling Point | 305-307°C744mm Hg(lit.) |
| Flash Point | 199.9°C |
| Solubility | soluble in Methanol |
| Vapor Presure | 3.48E-05mmHg at 25°C |
| Appearance | powder to crystal |
| Color | White to Yellow to Orange |
| pKa | 9.78±0.10(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
| Refractive Index | 1.619 |
| MDL | MFCD00709169 |
TRANS-TOLUYLENE - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | 2735 |
| WGK Germany | 2 |
| RTECS | WJ4926500 |
TRANS-TOLUYLENE - Reference Information
| introduction | 1,2-diphenylethylenediamine is a racemate prepared by resolution (1R,2R)-( )-1,2-diphenylethylenediamine and (1S,2S)-(-)-1,2-diphenylethylenediamine chiral ligand, chiral (±)-1, 2-Diphenylethylenediamine has broad application prospects in chiral drugs, chiral pesticides, chiral liquid crystals, chiral fragrances, etc. |
| preparation | add 1,2-diphenylethylenedioxime (48g, 0.20mol) and 260ml methanol to a 500ml four-mouth flask equipped with condenser, stir to dissolve them completely, then add 2g activated carbon (120 mesh),0.5g Raney nickel, and raise the temperature to 60 ℃, slowly add 80% hydrazine hydrate (28.75g,0.46mol) dropwise, keep the reaction temperature between 58 ℃ and 62 ℃, nitrogen is released in the reaction process, and the dropping acceleration is controlled at the rate of nitrogen release. it is better to track the reaction process by liquid chromatography, end the reaction when the raw material 1,2-diphenylethylenedioxime disappears, and cool the mixed liquid, raney nickel and activated carbon are filtered and stored with a small amount of water for application. the filtrate is distilled methanol is recovered. the residue is added with 200ml petroleum ether and heated to dissolve it completely. after cooling for 24 hours, the product (+)-1,2-diphenylethylenediamine 41.55g is filtered to obtain 98% yield and 99.57% chemical purity. |
Last Update：2024-04-10 22:29:15
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View History
TRANS-TOLUYLENE
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