Peroxidation of secondary carbon in alkanes and cycloalkanes
    1.
    发明授权
    Peroxidation of secondary carbon in alkanes and cycloalkanes 失效
    烷烃和环烷烃中二次碳的过氧化

    公开(公告)号:US5334771A

    公开(公告)日:1994-08-02

    申请号:US091780

    申请日:1993-07-14

    摘要: A secondary carbon atom in an alkane, including alkyl groups attached to aromatic rings, or cycloalkane is peroxidized by molecular oxygen to the corresponding hydroperoxide in the absence of a catalyst. The peroxidation is carried out in the presence of a tertiary hydroperoxide initiator which provides the free radicals needed to maintain the reaction. The amount of tertiary alcohol in the initiator is limited. The initial product of the peroxidation contains the secondary hydroperoxide as well as unreacted hydrocarbon, unreacted tertiary hydroperoxide and tertiary alcohol. The tertiary alcohol is removed as an azeotrope with part of the unreacted hydrocarbon which may be then separated from the alcohol and recycled. A second azeotropic distillation follows where the unreacted tertiary hydroperoxide is removed as an azeotrope with the rest of the unreacted hydrocarbon. This azeotrope is directly recycled to the peroxidation reaction.

    摘要翻译: 在不存在催化剂的情况下,烷烃中的仲碳原子(包括连接到芳环上的烷基)或环烷烃通过分子氧过氧化成相应的氢过氧化物。 过氧化反应在叔氢过氧化物引发剂的存在下进行,其提供维持反应所需的自由基。 引发剂中叔醇的量受到限制。 过氧化物的初始产物含有次级过氧化氢以及未反应的烃,未反应的叔氢过氧化物和叔醇。 叔醇作为与部分未反应烃的共沸物除去,然后将其与醇分离并再循环。 进行第二次共沸蒸馏,其中未反应的叔氢过氧化物作为与其余未反应烃的共沸物除去。 这种共沸物直接再循环到过氧化反应中。

    Initiated peroxidation of secondary carbon in alkanes and cycloalkanes
    3.
    发明授权
    Initiated peroxidation of secondary carbon in alkanes and cycloalkanes 失效
    在烷烃和环烷烃中引发二次碳的过氧化

    公开(公告)号:US5220075A

    公开(公告)日:1993-06-15

    申请号:US915897

    申请日:1992-07-17

    申请人: George Ember

    发明人: George Ember

    摘要: A secondary carbon atom in an alkane, including alkyl groups attached to aromatic rings, or cycloalkane is oxidized by molecular oxygen to the corresponding hydroperoxide in the absence of a catalyst. The oxidation is carried out in the presence of a tertiary hydroperoxide initiator which provides the free radicals needed to maintain the reaction. The amount of tertiary alcohol in the initiator is limited.

    摘要翻译: 在不存在催化剂的情况下,链烷烃中的仲碳原子(包括连接到芳环上的烷基)或环烷烃被分子氧氧化成相应的氢过氧化物。 在叔氢过氧化物引发剂的存在下进行氧化,其提供维持反应所需的自由基。 引发剂中叔醇的量受到限制。