Persulfonylation of amines applied to the synthesis of higher generation dendrimers |
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Authors: | Lukin Oleg Schubert Dirk Müller Claudia Corda Mirza Kandre Ramchandra |
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Affiliation: | Institute of Polymers, Department of Materials, ETH Zurich, HCI G 527, 8093 Zurich, Switzerland. oleg.lukin@mat.ethz.ch |
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Abstract: | 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. |
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