2508-29-4
5-Amino-1-pentanol
CAS: 2508-29-4
Molecular Formula: C5H13NO
2508-29-4 - Names and Identifiers
| Name | 5-Amino-1-pentanol |
| Synonyms | Pentanolamine Aminopentanol 5-aminopentan-1-ol 5-Amino-1-pentanol 5-Aminopentane-1-ol 5-hydroxypentan-1-aminium 5-Hydroxypentylamine, 1-Amino-5-hydroxypentane 2-chloro-1,3-dibromobenzene 2,6-dibromo-1-chlorobenzene |
| CAS | 2508-29-4 |
| EINECS | 219-718-2 |
| InChI | InChI=1/C5H13NO/c6-4-2-1-3-5-7/h7H,1-6H2/p+1 |
| InChIKey | LQGKDMHENBFVRC-UHFFFAOYSA-N |
2508-29-4 - Physico-chemical Properties
| Molecular Formula | C5H13NO |
| Molar Mass | 103.16 |
| Density | 0.949 g/mL at 25 °C (lit.) |
| Melting Point | 33-35 °C (lit.) |
| Boling Point | 120-122 °C/16 mmHg (lit.) |
| Flash Point | 150°F |
| Water Solubility | miscible |
| Solubility | Chloroform, Ethyl Acetate |
| Vapor Presure | 0.0208mmHg at 25°C |
| Appearance | Oil |
| Color | Yellow |
| BRN | 1732302 |
| pKa | 15.16±0.10(Predicted) |
| PH | 13.2 (500g/l, H2O, 20℃) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Sensitive | Air Sensitive |
| Refractive Index | n20/D 1.4615(lit.) |
2508-29-4 - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R22 - Harmful if swallowed R34 - Causes burns R35 - Causes severe burns |
| Safety Description | 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3259 8/PG 3 |
| WGK Germany | 2 |
| FLUKA BRAND F CODES | 10-34 |
| HS Code | 29221980 |
| Hazard Note | Irritant |
| Hazard Class | 8 |
| Packing Group | III |
2508-29-4 - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| introduction | 5-amino-1-pentanol is an amino alcohol. Amino alcohol is an important bifunctional compound containing both hydroxyl and amino groups in the molecule. It is widely used in the synthesis of medicines and pesticides, and is often used as an organic synthetic block. In addition, amino alcohols are structural elements of a variety of natural product molecules, usually have biological activity, and have high medicinal value. |
| preparation | (1) synthesis of 2-hydroxytetrahydropyran: weigh 40g 3,4-dihydro-2H-pyran, add 360g of deionized water to 600mL reaction kettle, seal the kettle, replace it with N2 for 3 times, then charge and press it for 3MPa, raise the temperature to 60 ℃, quickly stir and react for 10 hours, and then finish. After gas chromatography analysis, the conversion rate of 3, 4-dihydro-2H-pyran was 99.1%, the selective 91.4% of 2-hydroxytetrahydropyran, and the remaining by-products were dimers of 2-hydroxytetrahydropyran. (2) prepared by impregnation method with oxide composition of 20% NiO-1%B2O3/79% SiO2-Al2O3 catalyst precursor weighing 7.786g Ni(NO3) 3.6H2O, 0.178g H3BO3, adding a proper amount of deionized water, stirring and dissolving, adding 7.9 gSiO2-Al2O3 carrier, stirring and mixing evenly, standing at room temperature for 2h, placing in an oven, drying at 110 ℃ for 12h. The dry sample was calcined at 450 ℃ for 2h in N2 atmosphere to obtain the catalyst precursor of the required component. The calcined catalyst precursor was reduced to 450 ℃ for 2h in H2 atmosphere (flow rate was 100 mL/min) to obtain the active catalyst. (3) reduction amination reaction of 2-hydroxytetrahydropyran: weigh 150g of 2-hydroxytetrahydropyran and 150g of 25% ammonia water synthesized in step (1) and add them to a 600mL reaction kettle, then add 3g of active catalyst in step (2), seal the kettle, raise the H2 pressure to 3MPa after being replaced by H2 for 3 times, raise the temperature to 100 ℃ for 2 hours, and maintain the pressure constant by supplementing H2 during the reaction, after the reaction, the cooling water cooled down, the conversion rate of 2-hydroxytetrahydropyran in the reaction solution analyzed by gas chromatography was 100%, and the yield of 5-amino-1-pentanol reached 90.1%. |
Last Update：2024-04-09 20:52:54
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