Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 41, No. 10, 1995, pp.2161-2164
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7192
Simple Synthesis of 2,2'-Bisindole from Indigo and Its Application for the Syntheses of Indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7-(6H)dione and -5-(6H)one Derivatives

Masanori Somei,* Hiroyuki Hayashi, Tohru Izumi, and Shinobu Ohmoto

*Faculty of Pharmaceutical Scicences, Kanazawa University, 13-1 Takara-machi, Kanazawa 920, Japan

Abstract

Indiogo was converted to 2,2’-bisindole, from which 6-substituted indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7-(6H)dione and -5-(6H)one derivatives were prepared in short steps. Bromination of 6-methylindolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7-(6H)dione is also reported.