Process for the preparation of secondary amines
    8.
    发明授权
    Process for the preparation of secondary amines 失效
    仲胺的制备方法

    公开(公告)号:US6107521A

    公开(公告)日:2000-08-22

    申请号:US460560

    申请日:1999-12-14

    摘要: N,N-disubstituted amines in which the amino nitrogen atom is bound to the carbon atom of an aromatic ring disubstituted in the positions ortho to the carbon atom, are prepared by allowing a primary amine and a compound in which an ortho, ortho-disubstituted aromatic compound carrying a nucleofuge substituent, to react in a basic environment in the presence of a catalytic palladium(0) complex and a ligand, the ratio of palladium complex to ligand being greater than at least 1:1. A typical embodiment involves the reaction of 2-methyl-6-ethylphenyl-trifluoromethylsulfonate and (S)-1-methoxy-2-aminopropane in the presence of bis(dibenzylideneacetone)palladium, tri-tert.-butylphosphine, and sodium tert.-butoxide to yield (S)-N-(1-methoxyprop-2-yl)-2-methyl-6-ethylphenylamine.

    摘要翻译: 其中氨基氮原子与在碳原子邻位置的二取代的芳环的碳原子结合的N,N-二取代的胺通过使伯胺和其中邻位,邻 - 二取代的 携带核苷取代基的芳族化合物在催化钯(0)络合物和配体的存在下在碱性环境中反应,钯配合物与配体的比例大于至少1:1。 典型的实施方案是在双(二亚苄基丙酮)钯,三叔丁基膦和叔丁基膦的存在下,2-甲基-6-乙基苯基 - 三氟甲基磺酸酯与(S)-1-甲氧基-2-氨基丙烷的反应, 得到(S)-N-(1-甲氧基-2-丙基)-2-甲基-6-乙基苯基胺。

    Metal-catalyzed amination of organic sulfonates to organic amines
    10.
    发明授权
    Metal-catalyzed amination of organic sulfonates to organic amines 失效
    将有机磺酸盐金属催化胺化成有机胺

    公开(公告)号:US5817877A

    公开(公告)日:1998-10-06

    申请号:US933658

    申请日:1997-09-19

    CPC分类号: C07D295/023 C07C209/18

    摘要: A process of preparing an organic amine having at least one unsaturated group, such as an arylamine, involving contacting an unsaturated organic sulfonate, such as an aryl sulfonate, with a reactant amine, such as an alkyl or aryl amine, in the presence of a base and a transition metal catalyst under reaction conditions. The transition metal catalyst contains a Group 8 metal and a chelating ligand, for example a Group 15-substituted arylene or Group 15-substituted metallocene, such as 1,1'-bis(diphenylphosphino)-2,2'-binaphthyl or 1,1'-bis(diphenylphosphino)-ferrocene, respectively. The aryl sulfonate can be prepared from a phenol and sulfonating agent.

    摘要翻译: 制备具有至少一个不饱和基团的有机胺的方法,例如芳基胺,包括使不饱和有机磺酸酯如芳基磺酸酯与反应物胺如烷基或芳基胺在存在下进行接触 碱和过渡金属催化剂。 过渡金属催化剂含有第8族金属和螯合配体,例如第15族取代的亚芳基或第15族取代的茂金属,例如1,1'-双(二苯基膦基)-2,2'-联萘或1,1-二 1'-双(二苯基膦基) - 二茂铁。 芳基磺酸盐可以由苯酚和磺化剂制备。