Process for preparing 2-halo-5-substituted pyridines
    13.
    发明授权
    Process for preparing 2-halo-5-substituted pyridines 失效
    制备2-卤代-5-取代吡啶的方法

    公开(公告)号:US5508410A

    公开(公告)日:1996-04-16

    申请号:US160037

    申请日:1993-11-30

    IPC分类号: C07D213/61

    CPC分类号: C07D213/61

    摘要: Described are preferred processes for preparing 2-halo-5-substituted pyridine compounds. Preferred processes can be conducted in a one-step, one-pot fashion, and involve the reaction of a formamide and a halogenating agent with a nitrile such as cis-2-pentenonitrile or with a combination of reactants including an aldehyde such as n-propionaldehyde and a nitrile or an amide. Preferred processes provide for convenient and advantageous preparations of 2-chloro-5-methylpyridine, which serves as an intermediate to important insecticidal compounds.

    摘要翻译: 描述了制备2-卤代-5-取代的吡啶化合物的优选方法。 优选的方法可以以一步一锅方式进行,并且涉及甲酰胺和卤化剂与腈如顺式-2-戊烯腈的反应或与包括醛的反应物的组合, 丙醛和腈或酰胺。 优选的方法提供方便和有利的2-氯-5-甲基吡啶的制备,其用作重要杀虫化合物的中间体。

    Water-based polymerization for linear polyvinylpyridine
    14.
    发明申请
    Water-based polymerization for linear polyvinylpyridine 审中-公开
    用于直链聚乙烯吡啶的水基聚合

    公开(公告)号:US20070213487A1

    公开(公告)日:2007-09-13

    申请号:US11370334

    申请日:2006-03-08

    IPC分类号: C08F4/28

    CPC分类号: C08F226/08

    摘要: The present application relates to processes for producing linear polyvinylpyridines without the use of hazardous solvents, and in a manner that allows control over the rate of heat generated by the reaction and the temperature of the reactor vessel. The processes involve the use of an initiator to initiate polymerization of vinylpyridine monomers in water. Processes of the invention provide good reaction rates and conversions, and are particularly advantageous in achieving control of the molecular weights of the final product polymers.

    摘要翻译: 本申请涉及不使用有害溶剂生产线性聚乙烯吡啶的方法,并且以能够控制由反应产生的热量和反应容器的温度的方式。 该方法涉及使用引发剂引发乙烯基吡啶单体在水中的聚合。 本发明的方法提供良好的反应速率和转化率,并且在实现对最终产物聚合物的分子量的控制方面特别有利。

    Process for the preparation of 3,5-diethyl-1,2-dihydro-1-phenyl-2-propylpyridine
    15.
    发明授权
    Process for the preparation of 3,5-diethyl-1,2-dihydro-1-phenyl-2-propylpyridine 有权
    3,5-二乙基-1,2-二氢-1-苯基-2-丙基吡啶的制备方法

    公开(公告)号:US07151181B2

    公开(公告)日:2006-12-19

    申请号:US11351783

    申请日:2006-02-10

    IPC分类号: C07D211/02

    CPC分类号: C07D211/82

    摘要: Methods are provided for improving production of 3,5-diethyl-1,2-dihydro-1-phenyl-2-propylpyridine (DHP). In one illustrative embodiment, the methods involve controlling the rate of reaction and temperature of the reaction during formation of DHP. In another illustrative embodiment, the methods involve neutralizing the acid catalyst subsequent to DHP formation.

    摘要翻译: 提供了用于改善3,5-二乙基-1,2-二氢-1-苯基-2-丙基吡啶(DHP)的生产的方法。 在一个说明性实施方案中,所述方法包括在形成DHP期间控制反应速率和反应温度。 在另一说明性实施方案中,所述方法包括在DHP形成之后中和酸催化剂。

    Preparation of heterocycles using 1,3-dihalopropenes
    16.
    发明授权
    Preparation of heterocycles using 1,3-dihalopropenes 有权
    使用1,3-二卤代丙烯制备杂环

    公开(公告)号:US06365738B1

    公开(公告)日:2002-04-02

    申请号:US09342294

    申请日:1999-06-29

    IPC分类号: C07D23936

    摘要: Described are preferred processes for preparing heterocycles having one or more nitrogen and/or oxygen heteroatoms, utilizing a 1,3-dihalopropene as an effective 3-carbon fragment. Preferred processes yield pyridines, quinolines, oxazoles, pyrimidines and pyrazoles, depending upon the other reactant or reactants utilized with the 1,3-dihalopropene.

    摘要翻译: 描述的是制备具有一个或多个氮和/或氧杂原子的杂环的优选方法,利用1,3-二卤代丙烯作为有效的3-碳片段。 取决于与1,3-二卤丙烯一起使用的其它反应物或反应物,优选的方法产生吡啶,喹啉,恶唑,嘧啶和吡唑。