The first formal [3 + 2] cycloaddition reaction of in situ generated azaoxyallyl cation with cyclic ketones has been developed using mild reaction conditions. A variety of spiro-4-oxazolidinones was obtained in excellent yields (up to 99%). The high efficiency of this process, coupled with the operational simplicity, makes it an attractive method for the synthesis of spiro-4-oxazolidinones.
使用温和的反应条件,已经开发出了第一个正式的[3 + 2]环加成反应,该反应是原位生成的氮杂烯丙基阳离子与环酮的反应。以优异的产率(高达99%)获得了各种螺-4-
恶唑烷酮。该方法的高效率以及操作简便性使其成为合成螺4-
恶唑烷酮的有吸引力的方法。