Selective Synthesis of Polyamine Derivatives: Efficient derivatization of the secondary amino group ofN-monosubstituted 1,3-diamines
作者:Christian Jentgens、Richard Hofmann、Armin Guggisberg、Stefan Bienz、Manfred Hesse
DOI:10.1002/hlca.19970800328
日期:1997.5.12
N-Monosubstituted 1,3-diamines were selectively functionalized at the secondary N-atom via 2-Ph-substituted hexahydropyrimidine intermediates. Reaction of the diamines with benzaldehyde, followed by treatment with an electrophile and hydrolysis, provided the desired products with excellent selectivity and in high yields. N4,N9-bis[3-phenylprop-2-enoyl]spermine (4a), which was further converted to N1
N-单取代的1,3-二胺通过2-Ph-取代的六氢嘧啶中间体在仲N-原子上选择性官能化。二胺与苯甲醛的反应,然后用亲电试剂进行处理和水解,从而以极高的选择性和高收率提供了所需的产物。N 4,N 9-双[3-苯基丙-2-烯酰基]亚精胺(4a),通过氨基转移进一步转化为N 1,N 1 2-双[3-苯基丙-2-烯酰基]亚精胺(15)。用这种方法从精胺(1)中以82%的收率制备反应。化合物4a或者,通过涉及末端氨基的中间保护的序列,以83%的产率(平均等于1)来合成α-己内酰胺。