93.
    发明专利
    未知

    公开(公告)号:ES2043636T3

    公开(公告)日:1994-01-01

    申请号:ES87118201

    申请日:1987-12-09

    Applicant: BASF AG

    Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150 DEG to 350 DEG C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.

    96.
    发明专利
    未知

    公开(公告)号:DE3872949D1

    公开(公告)日:1992-08-27

    申请号:DE3872949

    申请日:1988-05-26

    Applicant: BASF AG

    Abstract: Prodn. of 4-nitro-5-imidazolyl (thio) ethers of formula (I) is effected by reacting a 4,5-dinitroimidazole of formula (II) with an alcohol or thiol of formula R3XH (III) in a solvent at a pH of 4-16: R1=alkyl, alkoxy or cycloalkyl, aryl, aralkyl or alkaryl; R2=H, alkyl, cycloalkyl, aryl, aralkyl or alkaryl; R3= alkyl, alkoxy or cycloalkyl, aryl, aralkyl, alkaryl, heterocyclyl, heteroaryl or a cation, or R3 may be H when X=S; X=O or S; organic gps. are opt. inertly substd.

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