Synthesis of macrocyclic compounds with steric barriers in macroheterocycle proceeding from (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids

Author： Shabanov A.   Gasanova U.   Gakhramanova Z.   Gasanova M.  

Publisher： MAIK Nauka/Interperiodica

ISSN： 1070-4280

Source： Russian Journal of Organic Chemistry, Vol.45, Iss.11, 2009-11, pp. : 1714-1717

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Abstract

Using 1,2-dibromoethane, (E)-1,4-dibromo-2-butene, (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids we obtained along [1+1] scheme uncommon macrocyclic compounds containing ester groups, multiple bonds, and amide moieties in the macroheterocycle. The neutralization of bis-acids with ethylenediamine gave the corresponding macrocyclic diammonium salts that on heating to the melting point were converted into the corresponding macrocyclic diamides. The structure of compounds obtained was established from the elemental analyses, IR and NMR spectra.

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