Salicylaldehyde → Benzofuran, 2,2'-[1,1'-biphenyl]-4,4'-diylbis-

HRID 1164668

Reaktionsgleichung

Reaktionsgleichung von HRID 1164668
Cl[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:14]=[CH:13][C:12]([CH2:15]Cl)=[CH:11][CH:10]=2)=[CH:5][CH:4]=1.[CH:17](=O)[C:18]1[C:19](=[CH:21][CH:22]=[CH:23][CH:24]=1)[OH:20]>>[O:20]1[C:2]([C:3]2[CH:8]=[CH:7][C:6]([C:9]3[CH:14]=[CH:13][C:12]([C:15]4[O:20][C:19]5[CH:21]=[CH:22][CH:23]=[CH:24][C:18]=5[CH:17]=4)=[CH:11][CH:10]=3)=[CH:5][CH:4]=2)=[CH:17][C:18]2[CH:24]=[CH:23][CH:22]=[CH:21][C:19]1=2

Komponenten

3

Edukt 2

HCID 6998SalicylaldehydeHCID 742754,4'-Bis(chloromethyl)-1,1'-biphenyl

Produkt 1

HCID 11760843Benzofuran, 2,2'-[1,1'-biphenyl]-4,4'-diylbis-

Versuchsvorschrift

In accordance with the statements of German Offenlegungsschrift No. 2,238,734, 4,4'-bis-(chloromethyl)biphenyl (42) is reacted with salicylaldehyde to give 4,4'-bis-(benzo[b]furan-2-yl)-biphenyl and this product is reacted further with oleum to give a mixture of the corresponding tri- and tetra-sulphonic acids. This mixture can also be used for the optical brightening of cotton and polyamide.

Quellen und Nachweise

ORD-Eintrag
ord-c99a132406d04256b7f9f9815dc12fb5
Quelldatensatz
uspto-grants-1983_01
Patentnummer
US04370486

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