中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2,2,4,4-Tetramethyl-3-phenyliminocyclobutanon | 1445-29-0 | C14H17NO | 215.295 |
Acid-catalyzed rearrangement of 3-methylene-2,2,4,4-tetramethylcyclobutanone (1) gave the γ-lactone of 2,2,3,4-tetramethyl-4-hydroxyvaleric acid. Reaction of 2,2,4,4-tetramethylcyclobutane-1,3-dione (5) with PPA gave diisopropylketone with evolution of carbon dioxide. Acylium ions are postulated as intermediates in both these reactions.
Irradiation of 3-methylene-2,2,4,4-tetramethylcyclobutanone with nitrogen acids such as succinimide, phthalimide, imidazole, 3,5-dimethylpyrazole, purine, and benzimidazole gives 1:1 adducts that were identified as cyclic α-aminoacetals structurally related to nucleosides. Keywords: photochemistry of cyclobutanones, oxacarbene, nucleoside analogs.