Macrocycle opening in formyl derivatives of benzocrown ethers under the action of methylamine
作者:S. P. Gromov、A. I. Vedernikov、O. A. Fedorova
DOI:10.1007/bf00696929
日期:1995.5
A new method for synthesizing nitrogen-containing podands by nucleophilic regioselective cleavage of the macrocycle in formyl derivatives of benzocrown ethers by heating with methylamine and methylammonium chloride has been developed. This reaction is the first example of crown ether opening by a nitrogen-containing nucleophile.
Macrocycle opening in crown ethers
作者:S. P. Gromov、A. I. Vedernikov、O. A. Fedorova
DOI:10.1007/bf01435799
日期:1996.3
Macrocycle opening in derivatives of benzocrown ethers under the action of amines is affected by the nature of the heteroatoms in the macrocycle, the nature of the functional group in the benzene ring of the crown ether, and the length, branching, and number oi hydrocarbon radicals at the amine nitrogen atom. A distinguishing feature of this reaction is the template effect of MeNH(3)(+), Me(2)NH(2)(+), Na+, and K+ ions.
New approach to the synthesis of benzoazacrown ethers
作者:S. P. Gromov、A. I. Vedernikov、S. N. Dmitriev
DOI:10.1007/bf02496032
日期:1999.6
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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