A new procedure has been developed for the synthesis of formyl-substituted benzoazacrown ethers via cyclization of halogen derivatives of aza podands by the action of sodium hydride.
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-Methylbenzoazacrown ethers with the nitrogen atom conjugated with the benzene ring: the improved synthesis and the reasons for the high stability of complexes with metal and ammonium cations
作者:Sergey P. Gromov、Svetlana N. Dmitrieva、Artem I. Vedernikov、Nikolay A. Kurchavov、Lyudmila G. Kuz'mina、Yuri A. Strelenko、Michael V. Alfimov、Judith A. K. Howard
DOI:10.1002/poc.1527
日期:2009.9
1H NMR titration in CD3CN. High stability of complexes of N‐methyl derivatives of benzoazacrownethers is demonstrated, comparable with or even exceeding the stability of benzocrown‐ethercomplexes and markedly exceeding the stability of complexes of phenylazacrown ethers with the same macrocycle size. The structures of azacrown ethers and their complexes with Ba(ClO4)2 were studied by X‐ray diffraction