Selective Monoderivatization of Propane-1,3-diamine with Acid Chlorides: ?Hexahydropyrimidine method?vs. statistic methods
作者:Christian Jentgens、Stefan Bienz、Manfred Hesse
DOI:10.1002/hlca.19970800410
日期:1997.6.30
The selective N-monoderivatization of propane-1,3-diamine (5) with carbonyl and sulfonyl chlorides via2-phenylhexahydropyrimidine (6) was compared with the direct statistic monoderivatization. It was found that, under optimized conditions, both methods are competitive to one another, depending, however, strongly on the reactivity of the eleclrophile used. The ‘hexahydropyrimidine method’ is more reliable
将丙烷1,,3-二胺(5)与羰基和磺酰氯经2-苯基六氢嘧啶(6)的选择性N-单衍生化与直接统计单衍生化进行了比较。已经发现,在优化的条件下,两种方法彼此竞争,但是,这在很大程度上取决于所用亲电子试剂的反应性。就产量而言,“六氢嘧啶法”更为可靠,中等,但始终在54%至69%之间,而在某些情况下,“统计法”可导致极高的产率(高达96%),而在其他情况下,几乎没有。