Chemistry of Heterocyclic Compounds p. 874 - 876 (1988)
Update date:2022-09-26
Topics:
Zegkhugkh, Dzh.
Kadzhrishvili, D. O.
Samsoniya, Sh. A.
Suvorov, N. N.
Kedelashvili, N. Z.
7,7'-Dichloro-2,2'-dicarbethoxybis(5-indolyl)methane has been synthesized by cyclization of the 3,3'-dichloro-4,4'-diphenylmethanedihydrazone of ethyl pyruvate.Subsequent hydrolysis and decarboxylation of the corresponding diacid gave the unsubstituted 7,7'-dichlorobis(5-indolyl)methane.The syn-syn, syn-anti, and anti-anti forms of 3,3'-dichloro-4,4'-diphenylmethanedihydrazone of ethyl pyruvate have been separated and characterized.
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