91119-16-3Relevant academic research and scientific papers
Synthesis of Isomeric Benzodipyrroles
Katti, H. A.,Siddappa, S.
, p. 1205 - 1208 (2007/10/02)
Ethyl aminoindole-2-carboxylates (2), obtained by catalytic reduction of ethyl nitroindole-2-carboxylates (1) using Raney nickel, when subjected to Japp-Klingemann reaction furnish the respective indolylhydrazones (3).The latter undergo cyclization with H2SO4 to yield different isomeric benzodipyrroles (4-6).
