Process for the preparation of butane triols
    1.
    发明授权
    Process for the preparation of butane triols 失效
    制备丁三醇的方法

    公开(公告)号:US06479714B1

    公开(公告)日:2002-11-12

    申请号:US09242899

    申请日:1999-02-26

    IPC分类号: C07C2700

    CPC分类号: C07C29/147 C07C31/22

    摘要: A process for the preparation of butane triols is provided. In the process, a malic acid diester is reduced with sodium borohydride in the presence of an ether and an alcohol. Preferably, the malic acid diester is an ethyl or methyl ester, the ether is tetrahydrofuran or bis(2-methoxyethyl) ether (diglyme), and the alcohol comprises ethanol. Advantageously, the reaction is carried out at ambient temperature.

    摘要翻译: 提供了制备丁三醇的方法。 在此过程中,在醚和醇的存在下,用硼氢化钠还原苹果酸二酯。 优选地,苹果酸二酯是乙基或甲酯,醚是四氢呋喃或双(2-甲氧基乙基)醚(二甘醇二甲醚),醇包括乙醇。 有利地,反应在环境温度下进行。

    Process for the preparation of substituted aromatic compounds
    2.
    发明授权
    Process for the preparation of substituted aromatic compounds 失效
    取代芳族化合物的制备方法

    公开(公告)号:US06218564B1

    公开(公告)日:2001-04-17

    申请号:US09284284

    申请日:1999-06-10

    IPC分类号: C07C25550

    摘要: A process for the preparation of a substituted aromatic compound in which a chloroaromatic compound and an alkyl-, alkenyl- or aryl-boronic acid ester or anhydride are coupled in the presence of palladium and a lipophilic aliphatic phosphine comprising at least one branched aliphatic group or a lipophilic aliphatic Dis(phosphine). Preferred phosphines include triisopropyl, triisobutyl and tricyclohexylphosphine.

    摘要翻译: 一种制备取代芳族化合物的方法,其中氯化芳族化合物和烷基 - ,烯基 - 或芳基 - 硼酸酯或酸酐在钯的存在下偶联,并且包含至少一个支链脂族基团的亲脂性脂族膦或 亲脂性脂肪族Dis(膦)。 优选的膦包括三异丙基,三异丁基和三环己基膦。