中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

19 records (took 0.021 seconds)

    11.
    发明专利
    未知

    公开(公告)号：DE1217948B

    公开(公告)日：1966-06-02

    申请号：DEF0036622

    申请日：1962-04-21

    Applicant: HOECHST AG

    Inventor： KUEHNE DR RUDOLF ,  DIERY DR HELMUT ,  GROSSMANN DR MAX

    IPC: C07C309/20 ,  C07C311/02 ,  C07D295/26

    Abstract: The invention comprises (a) N-substituted alkenyl-sulphonamides that contain at least two radicals of the formula wherein R1 and R2 each represent hydrogen, an alkyl radical or a halogenated alkyl radical and is derived by removal of a hydrogen atom from a primary or secondary aliphatic, cycloaliphatic, or araliphatic polyamine or a secondary amine in which the nitrogen atom is part of a hydrogenated heterocyclic ring system which may contain as further hetero atoms an oxygen or nitrogen atom and which may be condensed on to an aromatic nucleus in which case the nitrogen atom of the secondary amino group must not be directly linked to the aromatic moiety, and (b) a process for the preparation of compounds containing at least one alkenyl-sulphonamide group comprising reacting a carbyl sulphate of the general formula wherein R1 and R2 are as defined above, with a primary or secondary aliphatic, cycloaliphatic or araliphatic amine or a secondary amine in which the nitrogen atom is a part of a hydrogenated heterocyclic ring system which may contain as further hetero atoms an oxygen or nitrogen atom and which may also be condensed on to an aromatic nucleus in which case the nitrogen atom of the secondary amino group must not be directly linked to the aromatic moiety, or with ammonia in an aqueous medium and in the presence of an alkaline earth metal hydroxide. The reaction, which is generally effected at - 10 DEG C. to + 100 DEG C., is advantageously performed in the presence of an organic solvent, preferably one that is immiscible or only slightly miscible with water.

Patent Agency Ranking