The reaction of 3H‐pyrimido[5,4‐c] [1,2,5]oxadiazin‐3‐one (5) with carbanions prepared in situ from compounds containing an activated methylene group afforded 6,7‐disubstituted pteridine‐2,4‐diones 7a‐m in good yields. The reaction mechanism, involving the initial attack by carbanion at oxadiazinone nitrogen atom bonded to oxygen, is proposed and discussed. Copyright © 1986 Journal of Heterocyclic Chemistry
Reactivity of 3H-Pyrimido[5,4-c] [1,2,5]oxadiazin-3-one towards Carbanions: Synthesis of pteridine-2,4-diones
GIORI, Paolo;VERONESE, Augusto;VICENTINI, Chiara Beatrice;MANFRINI, Maurizio;GUARNERI, Mario
1986
Abstract
The reaction of 3H‐pyrimido[5,4‐c] [1,2,5]oxadiazin‐3‐one (5) with carbanions prepared in situ from compounds containing an activated methylene group afforded 6,7‐disubstituted pteridine‐2,4‐diones 7a‐m in good yields. The reaction mechanism, involving the initial attack by carbanion at oxadiazinone nitrogen atom bonded to oxygen, is proposed and discussed. Copyright © 1986 Journal of Heterocyclic ChemistryFile in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
