bridged aromatic azo compounds (AAzos) from aromatic amines was developed by using red copper as catalyst. Despite numerous efforts towards the catalytic synthesis of symmetric and asymmetric AAzos derivatives, most reactions present certain drawbacks inhibiting their industrial applications, such as laborious multi-step processes, harsh reaction conditions and expensive reagents. And the synthesis
Synthesis of (2<i>H</i>)-Indazoles and Dihydrocinnolinones through Annulation of Azobenzenes with Vinylene Carbonate under Rh(III) Catalysis
作者:Min Seo Park、Kyeongwon Moon、Harin Oh、Ji Yoon Lee、Prithwish Ghosh、Ju Young Kang、Jung Su Park、Neeraj Kumar Mishra、In Su Kim
DOI:10.1021/acs.orglett.1c01866
日期:2021.7.16
Phenyliodine(III) Diacetate (PIDA) Mediated Synthesis of Aromatic Azo Compounds through Oxidative Dehydrogenative Coupling of Anilines: Scope and Mechanism
An efficient and environmentally benign method has been developed for the synthesis of symmetrical and unsymmetrical aromatic azo compounds through phenyliodine(III) diacetate (PIDA) mediatedoxidative dehydrogenative coupling of anilines in high yields. The scope of the reaction is broad for both homo- and cross-dimerization. A plausible reaction mechanism has been proposed based on a structurally