Hydrocarbon-bridged Metal Complexes, LII [1]. N1,N2-Di(tert-butoxycarbonyl)-1,2,4-triaminobutane, a Useful Reagent for the Synthesis of Hydrocarbon-bridged Bis(ethylenediamine) Ligands by Reactions with Dicarboxylic Acids
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چکیده
The reactions of N1,N2-Di-boc-1,2,4-triaminobutane with bridged dicarboxylic acids afford the corresponding bis-amides from which – after removal of the Boc groups – bis(N,N′-bidendate) ligands H2NCH2CH(NH2)(CH2)2NHCO-X-CONH(CH2)2CH(NH2)CH2NH2 can be obtained. New examples are the reactions of the triaminobutane with pyridine-2,6-dicarboxylic acid, with phenylene-1,4-diacetic acid, with terephthalic acid dichloride and with benzene-1,2,4,5-tetracarboxylic acid. From the new ligands with two terminal ethylenediamine groups, the bis(dichloroplatinum) complexes were synthesized.
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