SYNTHESIS OF DERIVATIVES OF THE NEW CONDENSED SYSTEM 4H,7H-FURO[3′,4′:6,7]CYCLOHEPTA[1,2-<i>b</i>]PYRAN
DOI:
https://doi.org/10.1007/6960Keywords:
2-amino-4H-pyran, 4-aminopyrimidine, benzylidene malononitrile, hydroxytropone, enol, pyrano[2, 3-d]pyrimidine, tropolone, tropone, Michael additionAbstract
8-Hydroxy-1,3-dimethyl-4H-cyclohepta[c]furan-4-one reacts with arylidenemalononitriles and, like 1,3-oxo enols, forms the corresponding condensed 2-amino-4H-pyrans. The analogous reaction with 3-(dicyanomethylene)indolin-2-ones give spirocyclic 2-amino-4H-pyrans. The 4-aminopyrimidine ring is formed on the basis of the enamino nitrile fragment of the new pyrans by successive reaction with triethoxymethane and then with aqueous ammonia.
How to Cite
Arsen'eva, M. Yu.; Arsen'ev, V. G. Chem. Heterocycl. Compd. 2008, 44, 136. [Khim. Geterotsikl. Soedin. 2008, 188.]
For this article in the English edition see DOI 10.1007/s10593-008-0037-1
