Electrochemistry of 1,2,5-thiadiazole 1,1-dioxide derivatives with 3,4 substituents presenting separated, connected, and fused Pi-systems
✍ Scribed by Svartman, Esther Lea; Caram, José Alberto; Mirífico, María Virginia; Vasini, Enrique Julio
- Book ID
- 120606259
- Publisher
- NRC Research Press
- Year
- 1999
- Tongue
- French
- Weight
- 140 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0008-4042
- DOI
- 10.1139/v99-051
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## Abstract magnified image A series of isolated and fused tetracyclic compounds, containing pyrido[2′,3′:3,4]pyrazolo[1,5‐__a__]pyrimidine linked with 1,3,4‐oxa‐, thiadiazole, 1,2,4‐tetrazole, and pyrazole derivatives were prepared by the reaction of 1,8,10‐trimethyl‐4‐oxo‐1,4‐dihydropyrido[2′,3′:
Ah&met-The equilibrium between I and the product restthing from the addition of ethanol to one of its C-N double bonds: 3-ethoxy-3,4-diphenyl-lJ,Qhiadisxohne 1,ldioxide (II), is studied by electrochemical methods in ethanol (EtOH)-acetonitrile (ACN) solvent mixtures. The equilibrium constant is meas