catalytic amount of TFA efficiently oxidizes aldoximes to nitrile oxides. The latter may be trapped in situ with olefins in a bimolecular or an intramolecular mode. The new method enables the execution of tandem oxidative dearomatization of phenols/intramolecular nitrile oxide cycloaddition sequences leading to useful synthetic intermediates.
含有催化量的TFA的
甲醇中的
碘乙酸二苯酯可将醛
肟有效氧化为腈。后者可以双分子或分子内方式用烯烃原位捕获。该新方法能够执行
苯酚/分子内
一氧化氮环加成序列的串联氧化脱芳香化反应,从而产生有用的合成中间体。