Synthesis of 2-phenyl-5,6-dihydropyrano[2,3-c]pyrrole-4,7-dione derivatives
作者:R. N. Vydzhak、S. Ya. Panchishin
DOI:10.1134/s1070363208080331
日期:2008.8
fused heterocyclic compounds. We have found only one publication where the synthesis of such compounds containing an alkoxycarbonyl or carboxy group in the 2-position has been described [1]. We have developed a new synthetic approach to pyrano [2,3-c]pyrrole-4,7-dione derivatives on the basis of methyl (E)-6-phenyl-2,4-dioxohex-5-enoate (I) [2]. By heating equimolar amounts of compound I, aromatic aldehyde