Copper-Catalyzed Intramolecular Dehydrogenative Aminooxygenation: Direct Access to Formyl-Substituted Aromatic N-Heterocycles
作者:Honggen Wang、Yong Wang、Dongdong Liang、Lanying Liu、Jiancun Zhang、Qiang Zhu
DOI:10.1002/anie.201100362
日期:2011.6.14
A direct synthesis of carbaldehydes through intramolecular dehydrogenative aminooxygenation has been developed. The process uses a catalytic amount of copper(II) in DMF or DMA under oxygen and does not require additional oxidants (see scheme). Mechanistic studies suggest that the carbonyl oxygen atom of the aldehyde is derived from oxygen through a copper‐mediated oxygen activation process via a peroxy–copper(III)
已经开发了通过分子内脱氢氨基氧化作用直接合成甲醛的方法。该方法在氧气下在DMF或DMA中使用催化量的铜(II),不需要其他氧化剂(请参见方案)。机理研究表明,醛的羰基氧原子是通过过氧铜(III)中间体通过铜介导的氧活化过程从氧衍生而来的。