Patent · US Active

Method for producing M-substituted phenylalkanols by means of isomerization

US8686193B2 · kind B2 · utility

1Cited by

1References

17Claims

0Family size

Assignee

BASF SE

Inventors

Andreas Lanver · Mannheim, DE
Klaus Ebel · Lampertheim, DE
Karl Beck · Langen, DE
Ralf Pelzer · Rastenberg, DE
Jörg Botzem · Schifferstadt, DE
Ulrich Griesbach · Mannheim, DE

Key dates

Filing date	Oct 19, 2010
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Oct 19, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11B9/0061
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of m-substituted phenylalkanols of the formula (I)in which R1 is C1-C5-alkyl and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein a p-substituted phenylalkanol of the formula (II)in which R1, R2, R3, R4 and R5 having the meanings given under formula (I), is isomerized in the presence of a Friedel-Crafts catalyst to give an m-substituted phenylalkanol of the formula (I). From the m-substituted phenylalkanols of the formula (I) it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which are known as fragrances and aroma chemicals.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.