4-Alkylideneisoxazol-5(4H)-ones (1) were epoxidized with t-butyl hydroperoxide yielding 6-aza-1,5-dioxaspiro[2.4]hept-6-en-4-ones (2). By heating, compounds (2) rearranged to 5-hydroxy-1,3-oxazin-6(6H)-ones (3). © 1991.
5-Hydroxy-1,3-oxazin-6(6H)-ones from 6-aza-1,5-dioxa-spiro [2.4]hept-6-en-4-ones / N. Almirante, M.L. Gelmi, C. Scarpellini. - In: HETEROCYCLES. - ISSN 0385-5414. - 32:6(1991), pp. 1181-1187.
5-Hydroxy-1,3-oxazin-6(6H)-ones from 6-aza-1,5-dioxa-spiro [2.4]hept-6-en-4-ones
M.L. GelmiSecondo
;
1991
Abstract
4-Alkylideneisoxazol-5(4H)-ones (1) were epoxidized with t-butyl hydroperoxide yielding 6-aza-1,5-dioxaspiro[2.4]hept-6-en-4-ones (2). By heating, compounds (2) rearranged to 5-hydroxy-1,3-oxazin-6(6H)-ones (3). © 1991.
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