Synthesis of Some Novel Binuclear Heterocyclic Compounds from 6-Ethyl-3-nitropyrano[3,2-c]quinoline-4,5(6H)-dione
✍ Scribed by M. Hassanin, Hany; Abdel-Kader, Dalia
- Book ID
- 120426411
- Publisher
- Japan Institute of Heterocyclic Chemistry
- Year
- 2013
- Tongue
- English
- Weight
- 838 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0385-5414
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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
## Abstract The reaction of 2‐chloro‐4‐(methylsulfonyl)benzoyl chloride (5) with 1‐methyl‐1__H__‐2,1‐benzothiazin‐4‐(3__H__)‐one 2,2‐dioxide (4) gave the __O__‐benzoyl compound, 1‐methyl‐2,2‐dioxido‐1__H__‐2,1‐benzothiazin‐4‐yl 2‐chloro‐4‐(methylsulfonyl)benzoate (6), which rearranged to give the C