| 2-Methyl-2-propyl-1,3-propanediol Basic information |
| Synthesis |
| Product Name: | 2-Methyl-2-propyl-1,3-propanediol |
| Synonyms: | methyl-2-propyl-2-propanediol-1,3;2-METHYL-2-PROPYL-1,3-PROPANEDIOL,99%;2-METHYL-2-PROPYL-1,3-PROPANDIOL;Carisoprodol intermediate H;NSC 26233;1,3-Propanediol, 2-methyl-2-propyl-;2-methyl-2-propyl-1,3-propandiol (intermediate of meprobamate or carisoprodol);DURANOL |
| CAS: | 78-26-2 |
| MF: | C7H16O2 |
| MW: | 132.2 |
| EINECS: | 201-099-5 |
| Product Categories: | Building Blocks;Chemical Synthesis;(intermediate of meprobamate or carisoprodol);Pharmaceutical Intermediates;Organic Building Blocks;Oxygen Compounds;Polyols;Intermediates & Fine Chemicals;Pharmaceuticals |
| Mol File: | 78-26-2.mol |
| 2-Methyl-2-propyl-1,3-propanediol Chemical Properties |
| Melting point | 57-59 °C (lit.) |
| Boiling point | 230 °C/753 mmHg (lit.) |
| density | 0.9744 (rough estimate) |
| refractive index | 1.4474 (estimate) |
| Fp | >230 °F |
| storage temp. | Refrigerator |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| pka | 14.57±0.10(Predicted) |
| form | Solid |
| color | White |
| BRN | 1734432 |
| CAS DataBase Reference | 78-26-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Propanediol, 2-methyl-2-propyl-(78-26-2) |
| EPA Substance Registry System | 1,3-Propanediol, 2-methyl-2-propyl- (78-26-2) |
| Safety Information |
| Hazard Codes | Xn |
| Risk Statements | 36-22 |
| Safety Statements | 22-24/25-39-26 |
| WGK Germany | 1 |
| RTECS | TY9386000 |
| HS Code | 2905399590 |
| MSDS Information |
| Provider | Language |
|---|---|
| 2,2-Bis(hydroxymethyl)pentane | English |
| SigmaAldrich | English |
| ACROS | English |
| 2-Methyl-2-propyl-1,3-propanediol Usage And Synthesis |
| Synthesis | 2-Methyl-2-pentenal was hydrogenated at 100°C and 1.3-1.5MPa with a yield of 80%. After obtaining 2-methylpentenal, it was added to 36% formaldehyde, and the reaction was carried out at room temperature. Sodium hydroxide solution was added dropwise. The reaction was exothermic, and the temperature was naturally raised to 70 °C, then heated to 90 °C, added for 1 h, cooled to 60 °C and left to separate layers. The upper layer was washed with water, the washings were combined with the lower layer, and extracted with benzene. The extract and the upper layer were combined, and benzene was recovered by distillation, followed by distillation under reduced pressure to collect a fraction at 160°C (14.7kPa), which was 2-methyl-2-propyl-1,3-propanediol,yield 93%. |
| Chemical Properties | Whgite Crystalline Solid |
| Uses | An intermediate in the synthesis of Carisoprodol. |
| Uses | A intermediate in the synthesis of Carisoprodol |
| 2-Methyl-2-propyl-1,3-propanediol Preparation Products And Raw materials |
| Raw materials | Methyl valeraldehyde |
| Preparation Products | Carisoprodol |
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