Invention Grant
US08367875B2 Process for the preparation of m-substituted alkyltoluenes by isomerization with ionic liquids as catalysts
有权
通过用离子液体作为催化剂异构化制备间取代的烷基甲苯的方法
- Patent Title: Process for the preparation of m-substituted alkyltoluenes by isomerization with ionic liquids as catalysts
- Patent Title (中): 通过用离子液体作为催化剂异构化制备间取代的烷基甲苯的方法
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Application No.: US13024786Application Date: 2011-02-10
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Publication No.: US08367875B2Publication Date: 2013-02-05
- Inventor: Andreas Lanver , Klaus Ebel , Karl Beck , Ralf Pelzer , Jörg Botzem , Ulrich Griesbach
- Applicant: Andreas Lanver , Klaus Ebel , Karl Beck , Ralf Pelzer , Jörg Botzem , Ulrich Griesbach
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Connolly Bove Lodge & Hutz LLP
- Main IPC: C07C45/45
- IPC: C07C45/45 ; C07C5/22
Abstract:
The invention relates to a process for the preparation of m-substituted alkyltoluenes of the formula (I) in which R1 is C1-C5-alkyl, wherein a p-substituted alkyltoluene of the formula (II) in which R1 has the meaning given under formula (I), is isomerized in the presence of ionic liquids to give an m-substituted alkyltoluene of the formula (I). The m-substituted alkyltoluenes obtainable according to the invention are starting compounds for the preparation of fragrances and aroma substances.
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