申请人:Celgro
公开号:US06107521A1
公开(公告)日:2000-08-22
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.
N,N-二取代胺,其中氨基氮原子与带有对位碳原子二取代的芳香环碳原子相连,通过在碱性环境中,让一级胺和带有可离去基团的邻、对位二取代的芳香化合物在钯(0)配合物催化剂和配体的存在下反应,钯配合物与配体的比例至少大于1:1来制备。一个典型的实施例涉及2-甲基-6-乙基苯基三氟甲磺酸盐和(S)-1-甲氧基-2-氨基丙烷在二(二苄基丙酮)钯、三叔丁基膦和叔丁醇钠的存在下反应,以产生(S)-N-(1-甲氧基丙-2-基)-2-甲基-6-乙基苯胺。