Rh(III)- and Zn(II)-Catalyzed Synthesis of Quinazoline <i>N</i>-Oxides via C–H Amidation–Cyclization of Oximes
作者:Qiang Wang、Fen Wang、Xifa Yang、Xukai Zhou、Xingwei Li
DOI:10.1021/acs.orglett.6b03155
日期:2016.12.2
Quinazoline N-oxides have been prepared from simple ketoximes and 1,4,2-dioxazol-5-ones via Rh(III)-catalyzed C–H activation–amidation of the ketoximes and subsequent Zn(II)-catalyzed cyclization. The substrate scope and functional group compatibility were examined. The reaction features relay catalysis by Rh(III) and Zn(II).
由简单的酮肟和1,4,2-二恶唑-5-酮通过Rh(III)催化的酮肟的C–H活化-酰胺化和随后的Zn(II)催化的环化反应制备了喹唑啉N-氧化物。检查了底物范围和官能团的相容性。该反应具有Rh(III)和Zn(II)的中继催化作用。