HuagongsheHuagongshe Chemistry Print Report · For research reference only
Carbamic acid, ethyl ester → Ethyl (3-oxobutanoyl)carbamate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Carbamic acid, ethyl ester | HCID 5641 | — |
| Reactant | Diketene | HCID 12661 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | Ethyl (3-oxobutanoyl)carbamate | HCID 582816 | 42.7% |
Reaction Steps
A mixture of diketene (25 g), urethane (20 g), and acetic acid (75 ml) was refluxed for 25 minutes. Evaporation of the acetic acid under reduced pressure gave a syrup which crystallized on scratching. Recrystallization from benzene gave 16.6 g (32.5%) of N-carbethoxyacetoacetamide as colorless needles.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04247712 |
| Source dataset | uspto-grants-1981_01 |
| ORD ID | ord-cf22466544634adc877fa2fb75ba53a4 |
| Source note | uspto-grants-1981_01 |