The ketals or enol ethers of 1,5-azidoketones were converted into lactams using a two-stage process. Treatment of the ketals and enol ethers with acid (trifluoroacetic acid, triflic acid, or trimethylsilyl triflate) afforded an oxonium ion which reacted with the tethered azide to give a 1,1-azido-alkoxy intermediate. Bond reorganization led to an iminium ether that was reacted with sodium iodide in
使用两步法将1,5-
叠氮酮的
缩酮或烯醇醚转化为内酰胺。用酸(
三氟乙酸,
三氟甲磺酸或三甲基
三氟甲磺酸酯)处理
缩酮和烯醇醚,得到氧鎓离子,其与束缚的
叠氮化物反应,得到1,1-
叠氮基-烷氧基中间体。键的
重组产生了
亚胺醚,该
亚胺醚与
碘化钠在
丙酮中反应以暴露出酰胺产物。据报道,使用二甲基或
二乙基缩酮,有七个分子内实例的收率在68%至≥95%之间。还描述了使用1,3-二
氧戊环的尝试和一个分子间的实例。