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6H-indeno[1,2-b]pyrido[3,2-e]pyrazines. A new heterocyclic ring system

✍ Scribed by Mervyn Israel; Lynne C. Jones; Edward J. Modest

Book ID: 112122621
Publisher: Journal of Heterocyclic Chemistry
Year: 1972
Tongue: English
Weight: 635 KB
Volume: 9
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570090213

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## Abstract The synthesis of new pyrido[3′,2′:5,6]thiopyrano[3,2‐__b__]indol‐5(6__H__)‐ones was accomplished by the Fischer‐indole cyclization of some 2,3‐dihydro‐3‐phenylhydrazonothiopyrano[2,3‐__b__]pyridin‐4(4__H__)‐ones, obtained from the 2,3‐dihydro‐3‐hydroxymethylenethiopyrano[2,3‐__b__]pyrid