HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Acetic Acid → 3,5-Di-tert.butyl-4-hydroxybenzyl-malonic acid-bis(2,2,6,6-tetramethyl-4-piperidinyl)ester
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Acetic Acid | HCID 176 | — |
| Edukt | Lithium amide | HCID 24532 | — |
| Edukt | Phenol, 4-[(dimethylamino)methyl]-2,6-bis(1,1-dimethylethyl)- | HCID 66609 | — |
| Edukt | Bis(2,2,6,6-tetramethylpiperidin-4-yl) propanedioate | HCID 1244568 | — |
| Lösungsmittel | Toluene | HCID 1140 | — |
| Produkt | 3,5-Di-tert.butyl-4-hydroxybenzyl-malonic acid-bis(2,2,6,6-tetramethyl-4-piperidinyl)ester | HCID 14093876 | — |
Reaktionsschritte
26 g (0.068 mole) of bis-(2,2,6,6-tetramethyl-4-piperidinyl) malonate and 17.8 g (0.068 mole) of N-(3,5-di-tert.butyl-4-hydroxybenzyl)dimethylamine are dissolved in 200 ml of toluene. After the addition of 0.5 g of lithium amide, the mixture is refluxed for 3 hours. After cooling, the mixture is neutralised with 1.5 ml of 1% acetic acid, and the organic phase repeatedly washed with water. After drying over Na2SO4, the solution is concentrated in vacuo to obtain, as oily residue, 3,5-di-tert.butyl-4-hydroxybenzyl-malonic acid-bis(2,2,6,6-tetramethyl-4-piperidinyl)ester.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US04221701 |
| Quelldatensatz | uspto-grants-1980_09 |
| ORD ID | ord-a6dd02c1463b481ca35a80ea5c2279cf |
| Quellennotiz | uspto-grants-1980_09 |