PROCESS TO PURIFY DIALKYL SULFIDES

    公开(公告)号:CA2730707A1

    公开(公告)日:2010-01-21

    申请号:CA2730707

    申请日:2009-07-10

    Applicant: BASF SE

    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.

    PURIFICATION OF DIALKYL SULFIDES WITH BASIC METAL ALCOHOLATES AND/OR ALKALI OR ALKALINE EARTH METALS

    公开(公告)号:CA2730707C

    公开(公告)日:2016-09-13

    申请号:CA2730707

    申请日:2009-07-10

    Applicant: BASF SE

    Abstract: The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent. The process comprises bringing a dialkyl sulfide into contact with a base, and/or at least one alkali or alkaline earth metal. The base may be a metal alcoholate a metal oxide, a metal or alkylammonium hydroxide, a metal or alkylammonium carbonate, a metal enolate, a metal amide or a metal hydride. The process may contain a step of reacting the product with an electrophile and a further step of distilling out the dialkyl sulfide.

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