Biphenyl → Dibenzothiophene

HRID 1447829

Reaktionsgleichung

Reaktionsgleichung von HRID 1447829
[CH:1]1[C:6](N)=[CH:5][C:4]2[S:8]([C:11]3[CH:16]=[C:15](N)[CH:14]=[CH:13][C:12]=3[C:3]=2[CH:2]=1)(=O)=O.C1(C2C=CC=CC=2)C=CC=CC=1.[S].[Cl-].[Al+3].[Cl-].[Cl-]>>[CH:2]1[C:3]2[C:12]3[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=3[S:8][C:4]=2[CH:5]=[CH:6][CH:1]=1

Komponenten

5

Edukt 4

HCID 7095BiphenylHCID 804123,7-Diaminodibenzothiophene-5,5-dioxideHCID 5362487SulfurHCID 6451240Aluminum(III) Chloride

Produkt 1

HCID 3023Dibenzothiophene

Versuchsvorschrift

Benzidine sulfone used as the diamine component in the synthesis of the novel copolyamide is a known compound, and it can be prepared, for example, by a method comprising reacting biphenyl with sulfur in the presence of anhydrous aluminum chloride to form dibenzothiophene, oxidizing dibenzothiophene with hydrogen peroxide to form dibenzothiophene-5,5'-dioxide, nitrating the dioxide with concentrated nitric acid to form 3,7-dinitrodibenzothiophene-5,5'-dioxide and reducing the so formed dioxide with stannous chloride in the state acidified by hydrochloric acid to form benzidine sulfone.

Quellen und Nachweise

ORD-Eintrag
ord-b1b21ccb867e4cb5aed565436a45e393
Quelldatensatz
uspto-grants-1979_12
Patentnummer
US04178431

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