81888-14-4Relevant academic research and scientific papers
BISINDOLES. 10. SYNTHESIS OF 1,2-(5,5'-DIINDOLYL)ETHANE
Cheshmaritashvili, M. G.,Samsoniya, Sh. A.,Kurkovskaya, L. N.,Suvorov, N. N.
, p. 262 - 265 (2007/10/02)
A 2,2'-diethoxycarbonyl derivative of a new bisindole system, viz., 1,2-(5,5'-diindolyl)ethane, was obtained by cyclization of ethyl pyruvate sym-4,4'-diphenyleneethanedihydrazone. 5-(β-Phenylethyl)-2-ethoxycarbonylindole was also isolated in very low yield from the reaction products.Saponification of the 2,2'-diethoxycarbonyl derivative gave the corresponding dicarboxylic acid, the thermal decarboxylation of which leads to the formation of 1,2-(5,5'-diindolyl)ethane.The syn,syn and anti,anti forms of ethyl pyruvate sym-4,4'-diphenyleneethanedihydrazone were also obtained and characterized.
