4-Hydroxybenzaldehyde → 3-Buten-2-one, 4-(4-hydroxyphenyl)-

HRID 1165351

Reaktionsgleichung

Reaktionsgleichung von HRID 1165351
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=O)=[CH:4][CH:3]=1>CC(C)=O>[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[CH:3][C:2](=[O:1])[CH3:9])=[CH:4][CH:3]=1

Komponenten

3

Edukt 1

HCID 1264-Hydroxybenzaldehyde

Produkt 1

HCID 956483-Buten-2-one, 4-(4-hydroxyphenyl)-

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

It has also been disclosed that 4-hydroxy-benzaldehyde can be condensed with acetone to give 4-hydroxy-benzalacetone, which is then hydrogenated to 4-(4-hydroxy-phenyl)-butan-2-one (cf. J. Am. Chem. Soc. 70 (1948), 3360). The 4-hydroxy-benzaldehyde required as the starting compound for this two-stage process is, however, difficult to prepare and therefore very expensive. Furthermore, the overall yield of 1-(4-hydroxy-phenyl)-butan-3-one obtained by this process is unsatisfactory.

Quellen und Nachweise

ORD-Eintrag
ord-c6245e7859df4aaa8b30b87fecd27e60
Quelldatensatz
uspto-grants-1990_03
Patentnummer
US04908481

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