2-Amidinylindol-3-carbaldehydes bearing an alpha-alkoxycarbonyl substituent on the cyclic-tertiary amine moiety were prepared. Pyrolysis of these amidines in diethylenglycol-monoethyl ether produced mainly a pyrrolo[ 1',2'-1,2]-1,4-diazepino[5,6-b]indol-7,11-dione. A similar result was obtained starting from 2-amidinylbenzofuran-3-carbaldehyde.
2-amidinylindole-3-carbaldehydes: Synthesis of new tetracyclic compounds containing the pyrrolo[1,2-c]1,4-diazepine ring / F. Clerici, E. Erba, D. Pocar. - In: TETRAHEDRON. - ISSN 0040-4020. - 59:10(2003), pp. 1667-1671.
2-amidinylindole-3-carbaldehydes: Synthesis of new tetracyclic compounds containing the pyrrolo[1,2-c]1,4-diazepine ring
F. ClericiPrimo
;E. ErbaSecondo
;D. PocarUltimo
2003
Abstract
2-Amidinylindol-3-carbaldehydes bearing an alpha-alkoxycarbonyl substituent on the cyclic-tertiary amine moiety were prepared. Pyrolysis of these amidines in diethylenglycol-monoethyl ether produced mainly a pyrrolo[ 1',2'-1,2]-1,4-diazepino[5,6-b]indol-7,11-dione. A similar result was obtained starting from 2-amidinylbenzofuran-3-carbaldehyde.
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