The photo-sensitized oxygenation of 1, 2-diazepines (1 and 12) and azepine (17) results in the formation of the corresponding relatively stable epidioxides (2, 13, and 18). The dioxides (2) react with potassium hydroxide to give the epoxy-ketones (10) and with methanol to give the solvent adducts (11), probably via the intermediates (8 and 9). Treatment of 13 with alumina gives the hydroxy-epoxide (15), which is converted to the epoxy-diazepinone (16) by an alkali treatment. However, a similar treatment of 18 with bases gives only N-ethoxycarbonylaniline (19) and does not give any other characterized products.
1, 2-二氮杂
环庚烷(1 和 12)和氮杂
环庚烷(17)的光敏氧化反应会生成相应的相对稳定的
二氧杂环庚烷(2、13 和 18)。二氧化物 (2) 与
氢氧化钾反应生成环氧酮 (10),与
甲醇反应生成溶剂加合物 (11),这可能是通过中间产物 (8 和 9) 实现的。用氧化铝处理 13 可以得到羟基
环氧化物 (15),再用碱处理可以将其转化为环氧二氮杂
环庚酮 (16)。然而,用碱对 18 进行类似处理后,只能得到 N-乙氧基羰基
苯胺 (19),而不能得到任何其他特征产物。