HuagongsheHuagongshe Chemistry Print Report · For research reference only
Diethyl butylmalonate → HCID 54237698, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Diethyl butylmalonate | HCID 67244 | — |
| Reactant | 1-Methoxy-2,2,6,6-tetramethyl-piperidin-4-ol | HCID 10997770 | — |
| Catalyst | Lithium amide | HCID 24532 | — |
| Solvent | O-Xylene | HCID 7237 | — |
| Product | HCID 54237698 | HCID 54237698 | 98.4% |
Reaction Steps
A mixture of diethyl n-butylmalonate (11.55 g, 53.4 mmol), 4-hydroxy-1-methoxy-2,2,6,6-tetramethylpiperidine (20.0 g, 107 mmol), lithium amide (120 mg), and xylene (100 ml) is distilled until the distillate reaches a constant temperature of 137° C. Xylene is evaporated and the residue is dissolved in heptane. Acetic acid is added and the resulting precipitate is filtered. The filtrate is concentrated to obtain 26.2 g (98% yield) of a light yellow oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05204473 |
| Source dataset | uspto-grants-1993_04 |
| ORD ID | ord-20b921b2568c4c88ab22a6e9bf4f0c09 |
| Source note | uspto-grants-1993_04 |