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Heterocyclic photorearrangements. Some investigations of the photochemical behaviour of 3-acylamino-1,2,4-oxadiazoles. Synthesis of the quinazolin-4-one system

✍ Scribed by Buscemi, Silvestre; Vivona, Nicol�

Book ID: 120595980
Publisher: Royal Society of Chemistry
Year: 1991
Tongue: English
Weight: 428 KB
Volume: 2
Category: Article
ISSN: 1472-779X
DOI: 10.1039/P29910000187

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## 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