## Abstract The ring‐photoisomerization of 3‐amino‐ and 3‐methylamino‐5‐phenyl‐1,2,4‐oxadiazoles into the corresponding 2‐amino‐ and 2‐methylamino‐5‐phenyl‐1,3,4‐oxadiazoles has been reinvestigated by examining the effect of a base on the photoreaction. On irradiating at λ = 254 nm in methanol, yie
Theoretical study of photoinduced ring-isomerization in the 1,2,4-oxadiazole series
✍ Scribed by Silvestre Buscemi; Maurizio D'Auria; Andrea Pace; Ivana Pibiri; Nicolò Vivona
- Book ID
- 108282522
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- French
- Weight
- 841 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0040-4020
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The photochemistry of some 1,2,4-oxadiazoles in the presence of sulphur nucleophiles has been investigated. Irradiation of the 5-amino-3-phenyl-and 3,5-diphenyl-l,2,4-oxadiazole at X = 254 nm in methanol in the presence of sodium hydrogen sulphide or thiols gave a photo-induced redox reaction at the