HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Benzoin → 2-Bromo-1,2-di-(4-chlorophenyl)ethanone
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Benzoin | HCID 8400 | — |
| Edukt | Bromine | HCID 24408 | — |
| Edukt | 1,2-Bis(4-chlorophenyl)ethanone | HCID 587318 | — |
| Lösungsmittel | Diethyl Ether | HCID 3283 | — |
| Produkt | 2-Bromo-1,2-di-(4-chlorophenyl)ethanone | HCID 11221618 | — |
Reaktionsschritte
The benzoin starting material can be prepared by adding bromine (18.1g) dropwise to a stirred solution of 4,4'-dichlorodeoxybenzoin (30g) in dry diethylether (400ml). The solution is stirred for a further hour and evaporated to provide crude α-bromo-4,4'-dichlorodeoxybenzoin (40g) which when recrystallised from methanol has a melting point of 81°-83°.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US04035499 |
| Quelldatensatz | uspto-grants-1977_07 |
| ORD ID | ord-430831fadbfb44189894a8a63183ea83 |
| Quellennotiz | uspto-grants-1977_07 |