Synthesis of Trimacrocyclic Compounds Comprising Diazacrown Ether Moieties via Pd(0)-Catalyzed Amination Reactionsстатья
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Macrobicycles comprising a central diazacrown structural unit were modified with two 3-bromobenzyl substituents and the resulting compounds were introduced in Pd(0)-catalyzed macrocyclization reactions with trioxadiamine, to give cryptand-like macrotricycles. In the second approach, diazacrown ethers were substituted with two 3,5-dibromobenzyl groups and their Pd(0)-catalyzed double macrocyclization with a series of oxadiamines produced a new family of trimacrocyclic compounds; the Pd(dba)2/RuPhos catalytic system was found to be the most efficient. The decoration of one trimacrocycle with four dansyl fluorophore groups produced a fluorescent molecular probe for Cu(II) and Al(III) cations.