4.
    发明专利
    未知

    公开(公告)号:DE60223683T2

    公开(公告)日:2008-10-30

    申请号:DE60223683

    申请日:2002-06-12

    Applicant: UBE INDUSTRIES

    Abstract: Preparation of a 5-amino-4-nitrosopyrazole derivative (IV) comprises reacting a 3,3-dialkoxy-2-hydroxyiminopropionitrile derivative (I) with a hydrazine compound (III). Preparation of a 5-amino-4-nitrosopyrazole derivative of formula (IV) or its salt comprises reacting a 3,3-dialkoxy-2-hydroxyiminopropionitrile derivative of formula (I) with a hydrazine compound of formula H 2NNHR 4 (III) in the presence of an acid. [Image] R 1, R 21-8C alkyl; and R 4H, optionally substituted alkyl or aryl. Independent claims are also included for: (1) compounds (III); (2) a process for preparing (IV) comprising reacting a 3-alkoxyacrylonitrile compound of formula (II) with nitrosoyl halide in the presence of an alcohol and then reacting with (III) in the presence of an acid. [Image] R 31-4C alkyl.

    8.
    发明专利
    未知

    公开(公告)号:DE60126298D1

    公开(公告)日:2007-03-15

    申请号:DE60126298

    申请日:2001-09-10

    Applicant: UBE INDUSTRIES

    Abstract: The present invention relates to a novel compound 4,8-dodecadienedinitrile represented by the following formula (1): wherein means a cis or trans bond, and a process for preparing 4,8-dodecadienedinitrile which comprises reacting a 2-alkoxy-5,9-cyclododecadienone oxime or a 2-halogeno-5,9-cyclododecadienone oxime with formic acid and hydroxylamine.

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