4-Bromo-2-nitrobenzene-1-thiol → 2-Amino-4-bromobenzene-1-thiol
Reaktionsgleichung
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([SH:8])=[C:4]([N+:9]([O-])=O)[CH:3]=1.[H][H]>C1COCC1.[Ni]>[NH2:9][C:4]1[CH:3]=[C:2]([Br:1])[CH:7]=[CH:6][C:5]=1[SH:8]Komponenten
5
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
The mixture of 4-bromo-2-nitro-benzenethiol and its disulfide from Example 2A (14.9 g, 53.5 mmol) in THF (450 mL) was mixed with Raney Ni (30 g, 100% wt). The mixture was hydrogenated in a 1000 mL Paar shaker at a hydrogen pressure of 40 psi at 50° C. for 41 hours. When the reaction was complete, the solids were filtered. The solid filter-cake was dissolved in pyridine (600 mL) at 100° C. and filtered to remove the Ni residue. This pyridine solution contained mostly the 2-amino-4-bromophenyldisulfide. Crude yield=11.9 g (92%)
Aufarbeitung
- filtrationthe solids were filtered
- filtrationThe solid filter-cake
- dissolutionwas dissolved in pyridine (600 mL) at 100° C.
- filtrationfiltered
- customto remove the Ni residue
Quellen und Nachweise
- ORD-Eintrag
- ord-aaf3c3a58dd04389ae0f87b7edd64968
- Quelldatensatz
- uspto-grants-2010_10
- Patentnummer
- US07807697B2
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