Methyl-2-oxocyclopentane carboxylate
Methyl 2-cyclopentanonecarboxylate
CAS: 10472-24-9
Molecular Formula: C7H10O3
Methyl-2-oxocyclopentane carboxylate - Names and Identifiers
Methyl-2-oxocyclopentane carboxylate - Physico-chemical Properties
| Molecular Formula | C7H10O3 |
| Molar Mass | 142.15 |
| Density | 1.145g/mLat 25°C(lit.) |
| Melting Point | 123-125 °C |
| Boling Point | 105°C19mm Hg(lit.) |
| Flash Point | >230°F |
| Solubility | Chloroform, Ethyl Acetate |
| Vapor Presure | 0.2mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 1.12 |
| Color | Clear colorless to slight yellow |
| BRN | 971717 |
| pKa | 12.00±0.20(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.456(lit.) |
| Physical and Chemical Properties | Density 1.054 boiling point 102-104 ° C. (11 mmHg) refractive index 1.455-1.457 flash point 79 ° C. |
Methyl-2-oxocyclopentane carboxylate - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R10 - Flammable |
| Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29183000 |
Methyl-2-oxocyclopentane carboxylate - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | 2-methoxycarbonyl cyclopentanone is an organic intermediate, it can be prepared from cyclopentanone and dimethyl carbonate by one-step reaction, or from dimethyl adipate by cyclization of sodium hydrogen or sodium methoxide. |
| preparation | add 126g cyclopentanone, 567g of dimethyl carbonate and 12.6g of solid base catalyst KF/Al2O3, wherein the solid base catalyst loading was 10(w/w)%, and the reaction was refluxed for 3H. The catalyst was cooled, filtered off, and the filtrate was distilled off under reduced pressure and distilled. The fraction 167G was collected at a pressure of 11mmHg and a temperature of 102 ° C. To 104 ° C. To obtain a colorless transparent liquid 2-methoxycarbonylcyclopentanone. |
Last Update：2024-04-09 15:16:45
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