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3 records (took 0.018 seconds)

    1.
    发明专利
    未知

    公开(公告)号：AT18206T

    公开(公告)日：1986-03-15

    申请号：AT82201472

    申请日：1982-11-19

    Applicant: STAMICARBON

    Inventor： VAN DER STOEL ROLAND E ,  BOSMA MARCEL A R ,  JANSSEN PETRUS H J ,  VAN DE MOESDIJK CORNELIS G M

    IPC: B01J23/58 ,  C07D201/08

    Abstract: Process for preparing a lactam which consists essentially in the reductive amination in the gas phase of an oxoalkane carboxylic acid having the formula R - @ - (CH2)n - COOH or an alkyl ester thereof, wherein R is an alkyl group having from 1 to 4 carbon atoms and n varies from 2 to 3, and wherein the reaction is carried out: A. in an atmosphere of hydrogen, and B. in the presence of a gas phase reactant selected from the group consisting of gaseous ammonia and a vaporized primary amine, and C. in the presence of a hydrogenation catalyst promoted with an alkali metal. The alkali metal particularly preferred as a promoter is sodium.

    PROCESS FOR THE PREPARATION OF A LACTAM
    2.
    发明专利
    PROCESS FOR THE PREPARATION OF A LACTAM 未知

    公开(公告)号：DE3269484D1

    公开(公告)日：1986-04-03

    申请号：DE3269484

    申请日：1982-11-19

    Applicant: STAMICARBON

    Inventor： VAN DER STOEL ROLAND E ,  BOSMA MARCEL A R ,  JANSSEN PETRUS H J ,  VAN DE MOESDIJK CORNELIS G M

    IPC: B01J23/58 ,  C07D201/08

    Abstract: Process for preparing a lactam which consists essentially in the reductive amination in the gas phase of an oxoalkane carboxylic acid having the formula R - @ - (CH2)n - COOH or an alkyl ester thereof, wherein R is an alkyl group having from 1 to 4 carbon atoms and n varies from 2 to 3, and wherein the reaction is carried out: A. in an atmosphere of hydrogen, and B. in the presence of a gas phase reactant selected from the group consisting of gaseous ammonia and a vaporized primary amine, and C. in the presence of a hydrogenation catalyst promoted with an alkali metal. The alkali metal particularly preferred as a promoter is sodium.

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