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    2-Pyrrolidone production
    21.
    发明授权
    2-Pyrrolidone production 失效
    2-吡咯烷酮生产

    公开(公告)号：US4181662A

    公开(公告)日：1980-01-01

    申请号：US891430

    申请日：1978-03-29

    Applicant: W. Alan Sweeney

    Inventor： W. Alan Sweeney

    IPC: C07D201/08 ,  C07D207/26

    CPC classification number: C07D201/08

    Abstract: A process for production of 2-pyrrolidone which comprises (a) contacting succinonitrile with water at a temperature between 150.degree. and 300.degree. C. and a pressure between 50 and 10,000 psig to thereby hydrolyze succinonitrile and (b) contacting the hydrolyzed succinonitrile with hydrogen in the presence of a heterogeneous hydrogenation catalyst and at a temperature between 200.degree. and 300.degree. C. and a pressure between 100 and 10,000 psig to thereby obtain 2-pyrrolidone.

    Abstract translation: 一种制备2-吡咯烷酮的方法，其包括（a）在150-300℃的温度和50至10,000psig之间的压力下使丁腈腈与水接触，从而水解琥珀腈和（b）使水解的琥珀腈与氢气接触 在非均相加氢催化剂的存在下，在200-300℃的温度和100至10,000psig之间的压力下，由此得到2-吡咯烷酮。

    Preparation of butyrolactam and valerolactam
    23.
    发明授权
    Preparation of butyrolactam and valerolactam 失效
    丁酸和戊酸酯的制备

    公开(公告)号：US3745164A

    公开(公告)日：1973-07-10

    申请号：US3745164D

    申请日：1971-07-27

    Applicant: DU PONT CANADA

    Inventor： ADAMEK E

    IPC: C07D201/08 ,  C07D211/76 ,  C07D27/08

    CPC classification number: C07D201/08 ,  C07D211/76

    Abstract: THE MANUFACTURE OF THE LACTAMS CONTAINING 4 OR 5 CARBON ATOMS (4-BUTYROLACTAM AND 5-VALEROLACTAM) IN WHICH SUCCINIMIDE AND GLUTARIMIDE, OR MIXTURES THEREOF, ARE REACTED WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST AT A PRESSURE OF ABOUT FROM 1 TO 1000 ATOMSPHERES AND AT A TEMPERATURE OF ABOUT FROM 230 TO 300* C. IN THE ABSENCE OF A SOLVENT, AND ISOLATING THE LACTAMS FORMED.

    Process for producing 2-pyrrolidinones
    25.
    发明授权
    Process for producing 2-pyrrolidinones 失效
    生产2-吡咯烷酮的方法

    公开(公告)号：US3567736A

    公开(公告)日：1971-03-02

    申请号：US3567736D

    申请日：1967-12-18

    Applicant: TEXACO INC

    Inventor： LARKIN JOHN M ,  KREUZ KENNETH L

    IPC: C07D201/08 ,  C07D27/08

    CPC classification number: C07D201/08

    Abstract: A METHOD FOR PREPARING A 2-PYRROLIDINONE BY CONTACTING A DINITROALCOHOL HAVING AT LEAST 5 CARBON ATOMS CORRESPONDING TO THE FORMULA:

    R-C(-R1)(-NO2)-C(-R2)(-R3)-C(-R4)(-R5)-CH(-OH)-

    C(-R6)(-NO2)-R7

    WITH AN ACIDIC OXIDIZING AGENT AT A PH NOT EXCEEDING 4 THEREBY FORMING A 4-NITROALKANOIC ACID OF THE FORMULA:

    R-C(-R1)(-NO2)-C(-R2)(-R3)-C(-R4)(-R5)-COOH

    AND THEREAFTER HYDROGENATING THE 4-NITROALKANOIC ACID IN AN ALCOHOLIC MEDIUM IN THE PRESENCE OF A MINOR AMOUNT OF A MINERAL ACID AND A HYDROGENATION CATALYST PREFERABLY SELECTED FROM THE GROUPS OF PLATINUM METALS AT TEMPERATURES RANGING FROM ABOUT 20 TO 200*C. AND UNDER HYDROGEN PRESSURES OF FROM 1 TO 100 ATMOSPHERES. THE 2-PYRROLIDINONES CONTEMPLATED CORRESPOND TO THE FORMULA:

    2-R,2-R1,3-R2,3-R3,4-R4,4-R5-PYRROLIDIN-5-ONE

    AND ARE USEFUL AS SOLVENTS FOR POLYMERS, INSECTICIDES AND PETROLEUM PROCESSING AND SEPARATION; AS PLASTICIZERS FOR ACRYLIC POLYMERS AND COPOLYMERS; AND AS DECOLORIZING AGENTS.

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