Andreas Lanver,Klaus Ebel,Karl Beck,Ralf Pelzer,Jörg Botzem,Ulrich Griesbach
申请号：
US13503488
公开号：
US08686193B2
申请日:
2010.10.19
申请国别(地区):
US
年份:
2014
代理人:
摘要：
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.
