1.
    发明专利
    未知

    公开(公告)号:DE59705963D1

    公开(公告)日:2002-02-14

    申请号:DE59705963

    申请日:1997-10-28

    Applicant: BASF AG

    Inventor: JULIUS DR

    Abstract: A process for the acetylation of the sterically non- hindered amino group in diamines (I) with a sterically hindered amino group and another non-hindered amino group comprises reacting the diamine with ketene. Preferably the reaction is carried out at -30 to 65 degrees C in an aprotic solvent, preferably THF. The sterically hindered amine function is part of a heterocycle. Preferred (I) is TAD.

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