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Novel Ring Contraction of 6-Azauracil Derivatives

✍ Scribed by Hanna Wojtowicz-Rajchel; Joanna Szczepkowska-Sztolcman; Andrzej Katrusiak; Krzysztof Golankiewicz

Book ID
104202821
Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
124 KB
Volume
56
Category
Article
ISSN
0040-4020

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✦ Synopsis

21008C with and without an electrophilic agent. Reactions of appropriate 6-azauracils with t-butyllithium and lithium diisopropylamide gave, as a result of a ring contraction, compounds 5 and 6. The structure of compound 5 was undeniably established by X-ray analysis. A mechanism of the novel ring transformation of 1,2,4-triazines to imidazoles is discussed.

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