Process for the acylation of aromatic ethers
    21.
    发明授权
    Process for the acylation of aromatic ethers 失效
    芳香醚酰化的方法

    公开(公告)号:US6013840A

    公开(公告)日:2000-01-11

    申请号:US765533

    申请日:1997-01-09

    CPC classification number: B01J29/084 C07C45/46

    Abstract: The present invention concerns a process for the acylation of an aromatic ether.Preferably the invention relates to a process for the acylation of a substituted aromatic ether, in particular veratrol.The acylation process of the invention consists of reacting the ether with an acylation agent in the presence of a zeolitic catalyst, and is characterized in that the acylation reaction is carried out in the presence of an effective quantity of a catalyst comprising a faujasite type zeolite or a Y zeolite with the following physico-chemical characteristics:an atomic ratio denoted "global Si/Me.sup.1 " between the number of atoms of the element silicon and the number of atoms of every trivalent element Me.sup.1 contained in the zeolite in the range 2.4 to 90, preferably in the range 2.4 to 75, and more preferably in the range 2.4 to 60;an Me.sup.2 alkali metal content such that the atomic ratio Me.sup.2 /Me.sup.1(IV) between the number of atoms of alkali metal Me.sup.2 and the number of atoms of every trivalent element Me.sup.1(IV) included in the zeolitic network is less than 0.2, preferably less than 0.1, and more preferably less than 0.05.

    Abstract translation: PCT No.PCT / FR96 / 00716 Sec。 371日期1997年1月9日 102(e)日期1997年1月9日PCT提交1996年5月10日PCT公布。 出版物WO96 / 35655 日期:1996年11月14日本发明涉及一种酰化芳族醚的方法。 优选地,本发明涉及酰化取代的芳族醚,特别是藜芦醇的方法。 本发明的酰化方法包括在沸石催化剂存在下使醚与酰化剂反应,其特征在于酰化反应在有效量的含有八面沸石型沸石的催化剂或 具有以下物理化学特性的Y沸石:在元素硅的原子数与沸石中所含的每个三价元素Me1的原子数在2.4至90之间的原子比表示为“全局Si / Me1” ,优选在2.4至75范围内,更优选在2.4至60范围内; Me2碱金属含量使得碱金属Me2的原子数与沸石网络中包含的每个三价元素Me1(IV)的原子数之间的原子比Me2 / Me1(IV)小于0.2,优选较少 小于0.1,更优选小于0.05。

    Process for the acylation of aromatic ethers
    22.
    发明授权
    Process for the acylation of aromatic ethers 失效
    芳香醚酰化的方法

    公开(公告)号:US5817878A

    公开(公告)日:1998-10-06

    申请号:US765537

    申请日:1997-01-09

    CPC classification number: B01J29/04 C07C45/46

    Abstract: The present invention concerns a process for the acylation of an aromatic ether. Preferably, the invention relates to a process for the acylation of an unsubstituted aromatic ether, in particular anisole. The acylation process of the invention consists of reacting the ether with an acylation agent in the presence of a zeolitic catalyst, and is characterized in that the acylation reaction is carried out in the presence of an effective quantity of a catalyst comprising a beta zeolite with an atomic ratio denoted "global Si/Me.sup.1 " between the number of atoms of the element silicon and the number of atoms of every trivalent element Me.sup.1 contained in the zeolite of no less than 15, preferably in the range 15 to 55, and more preferably in the range 18 to 35.

    Abstract translation: PCT No.PCT / FR96 / 00717 Sec。 371日期1997年1月9日 102(e)日期1997年1月9日PCT提交1996年5月10日PCT公布。 WO96 / 35656PC PCT出版物 日期:1996年11月14日本发明涉及一种酰化芳族醚的方法。 优选地,本发明涉及酰化未取代芳族醚,特别是苯甲醚的方法。 本发明的酰化方法包括在沸石催化剂存在下使醚与酰化剂反应,其特征在于酰化反应在有效量的包含β沸石的催化剂存在下进行, 原子比在元素硅的原子数与沸石中所含的每个三价元素Me1的原子数之间的“全局Si / Me1”表示为不小于15,优选在15至55的范围内,更优选在 范围18到35。

    Process for the preparation of lactams
    23.
    发明授权
    Process for the preparation of lactams 失效
    制备内酰胺的方法

    公开(公告)号:US5723603A

    公开(公告)日:1998-03-03

    申请号:US665520

    申请日:1996-06-17

    CPC classification number: C07D201/08 Y02P20/52 Y02P20/582

    Abstract: The present invention relates to a process for the preparation of lactams from dinitriles. It consists more precisely of a process for the preparation of lactam, linking two stages in series, one of hemihydrogenation of dinitrile to aminonitrile, the other of cyclizing hydrolysis of the aminonitrile after only one simple purification operation. Aliphatic lactams, such as especially epsilon-caprolactam, are base compounds for the preparation of polyamides (polyamide 6 from caprolactam).

    Abstract translation: 本发明涉及从二腈制备内酰胺的方法。 它更精确地包括制备内酰胺的方法,将两个连续的两个阶段连接在一起,一个是二腈与氨基腈的半氢化,另一个在只有一个简单的纯化操作之后氨基腈的环化水解。 脂肪族内酰胺,如特别是ε-己内酰胺,是制备聚酰胺(来自己内酰胺的聚酰胺6)的基础化合物。

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