作者:Dirk Schubert、Mirza Corda、Oleg Lukin、Boris Brusilowskij、Evgenij Fiškin、Christoph A. Schalley
DOI:10.1002/ejoc.200800408
日期:2008.8
A topological approach to the analysis of isomericdendrimers by considering their molecular graphs has been applied to correlate various properties of a series of new sulfonimide-based isomericdendrimers with their structures. According to this approach isomericdendrimers are referred to as either isographic, that is, having the same graph, or non-isographic, that is, having different graphs. Six
Systematic analysis of the persulfonylation of branched aromatic oligoamines with different arylsulfonyl chlorides allowed optimization of the repetitive steps involved in the synthesis of the sulfonimide-based dendrimers. The optimized procedures afforded the fourth generation N- and pentaphenylene-centered dendrimers with 16 and 32 peripheral groups, respectively. Analysis of products of incomplete substitution showed that the amino groups in aromatic oligoamines are persulfonylated consecutively.