Syntheses and properties of tetraaza-, diaza-, tetraoxa-, and dioxa-metacyclophanes

Metacyclophanes were prepared by cyclization reactions between bis(chloromethyl) compounds and piperazine, primary amines, or ethylene glycol. The H-1 nmr relaxation rime (T-1) measurements indicated that the macrocycles feature the up and down motion of the aromatic units around the XCH2Ar (X = N,...

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Published inJournal of heterocyclic chemistry Vol. 37; no. 6; pp. 1479 - 1489
Main Authors Ito, K, Ohba, Y, Shinagawa, E, Nakayama, S, Takahashi, S, Honda, K, Nagafuji, H, Suzuki, A, Sone, T
Format Journal Article
LanguageEnglish
Published ODESSA HETERO CORPORATION 01.11.2000
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
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Summary:Metacyclophanes were prepared by cyclization reactions between bis(chloromethyl) compounds and piperazine, primary amines, or ethylene glycol. The H-1 nmr relaxation rime (T-1) measurements indicated that the macrocycles feature the up and down motion of the aromatic units around the XCH2Ar (X = N, O) methylene moieties as the axes. Mctacyclophanes incorporating piperazine units showed high complexation ability for alkaline metal cations.
ISSN:0022-152X
DOI:10.1002/jhet.5570370612