Despite their tremendous synthetic and pharmaceutical utility, primary azaaromatic amines remain elusive for access based on a generally applicable C–H functionalization strategy. An oxadiazolone-enabled approach is reported for convenient entry into N-unsubstituted 1-aminoisoquinolines through Co(III)-catalyzed redox-neutral, step-, atom-, and purification-economic C–H functionalization with alkynes
Rh(III)-Catalyzed Synthesis of Substituted Isoindoles through a Direct C–H Activation/[4 + 1] Annulation and Acyl Migration Cascade of Oxadiazolones with Diazo Compounds
作者:Xiaohao Yang、Hairu Ren、Shengbin Zhou、Chunpu Li、Chaoyi Liu、Yu Zhou、Guoxue He、Hong Liu
DOI:10.1021/acs.orglett.3c00547
日期:2023.5.12
Rh(III)-catalyzed C–H bond activation for the synthesis of fused 2H-isoindole scaffolds from oxadiazolones with diazo compounds was developed. The reaction proceeded through C–H activation of oxadiazolones/[4 + 1] annulation, intramolecular cyclization, and an unusual acyl migration cascade to afford target scaffolds with good yields. These 2H-isoindole derivatives could be further transformed into intriguing