HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Methanol → 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Methanol | HCID 887 | — |
| Edukt | Sodium Hydroxide | HCID 14798 | — |
| Edukt | 2,4-Bis(1,1-dimethylethyl)-6-[2-(2-nitrophenyl)diazenyl]phenol | HCID 104110 | — |
| Edukt | HCID 178418361 | HCID 178418361 | — |
| Katalysator | Nickel | HCID 935 | — |
| Lösungsmittel | Tributyl Phosphate | HCID 31357 | — |
| Produkt | 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole | HCID 77455 | 85,8% |
Reaktionsschritte
Using the general procedure 6, 35.5 grams of 2-nitro-2'-hydroxy-3',5'-di-tert-butylazobenzene was suspended in 100 grams of tributyl phosphate, 50 grams of methanol and 4 grams of sodium hydroxide. To the suspension was then added 8 grams of Raney nickel catalyst and hydrogenation was carried out under 1 atmosphere of hydrogen at 45° C. for 7 hours. The catalyst was separated by filtration at 80° C. The above named product was obtained in the usual manner in a yield of 85.8%.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US04219480 |
| Quelldatensatz | uspto-grants-1980_08 |
| ORD ID | ord-7689c388765c4881b0b07f82f8a08e49 |
| Quellennotiz | uspto-grants-1980_08 |