| 摘要 |
Process for esterification of farnesol in an initial mixture comprising alpha-bisabolol, farnesol and optionally other components, with the following steps: 1. Preparation or production of the initial mixture, 2. Adding (i) a transesterification catalyst and (ii) one or more compounds of formula (B) <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>2</SUP><img id="PRIVATE-USE-CHARACTER-00001" he="7.20mm" wi="8.47mm" file="US20070100160A1-20070503-Brketopenst.TIF" alt="private use character Brketopenst" img-content="character" img-format="tif" />Y<img id="PRIVATE-USE-CHARACTER-00002" he="6.77mm" wi="8.47mm" file="US20070100160A1-20070503-Brketclosest.TIF" alt="private use character Brketclosest" img-content="character" img-format="tif" /><SUB>n</SUB>CO<SUB>2</SUB>R<SUP>1</SUP> (B) <?in-line-formulae description="In-line Formulae" end="tail"?> in which the following applies: R<SUP>1 </SUP>stands for an alkyl residue with 1 to 12 C atoms; R<SUP>2 </SUP>stands for hydrogen, an alkyl residue with 1 to 20 C atoms, a cycloalkyl residue with 5 to 20 C atoms, an aryl residue with 6 to 20 C atoms or a heteroaryl residue with 5 to 20 C atoms; and Y stands for CH<SUB>2</SUB>, CH(Me), CH(Et), C(Me)<SUB>2</SUB>, CH<SUB>2</SUB>-CH(Me), CH(Me)-CH<SUB>2 </SUB>or CH<SUB>2</SUB>-CH(Me)-CH<SUB>2 </SUB>and n stands for a whole number from 0 to 6; or R<SUP>2 </SUP>stands for a group CO<SUB>2</SUB>R<SUP>3</SUP>, R<SUP>3 </SUP>standing for an alkyl residue with 1 to 12 C atoms; and Y stands for CH<SUB>2</SUB>, CH(Me), CH(Et), C(Me)<SUB>2</SUB>, CH<SUB>2</SUB>-CH(Me), CH(Me)-CH<SUB>2 </SUB>or CH<SUB>2</SUB>-CH(Me)-CH<SUB>2 </SUB>and n stands for a whole number from 0 to 8, or Y stands for an optionally substituted phenyl or naphthyl ring with a total of at most four substituents on the ring, n=1 applying.
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