Convergent Synthesis of Polynitrile and/or Polyamine Dendrimers through Hydroaminomethylation and Michael Addition
作者:Maryam Beigi、Stefan Ricken、Kai Sven Müller、Fikret Koç、Peter Eilbracht
DOI:10.1002/ejoc.201001307
日期:2011.3
A general concept for a versatile convergent synthesis of polynitrile and/or polyamine dendrimers has been developed by applying Vogtle's procedure in combination with the tandemhydroformylation/reductiveamination sequence, known as hydroaminomethylation. In this approach, first Vogtle's procedure is used to generate the desired dendron, which can then be attached to different types of polyfunctionalized
Polyamines, structurally related to putrescines and spermidines, are easily obtainable via hydroaminomethylation of methylallylphthalimide with primary or secondary amines. In addition, hydroaminomethylation of monoolefins with urea as a synthetic equivalent for ammonia, in contrast to other methods (e.g. the alkylation of ammonia or ammonium salts), allows selective synthesis of symmetric tertiary