Cyclometalated Ruthenium Catalyst Enables Selective Oxidation of <i>N</i>-Substituted Tetrahydroquinolines to Lactams
作者:Monuranjan Konwar、Tapashi Das、Animesh Das
DOI:10.1021/acs.orglett.3c04263
日期:2024.2.16
Herein, we report an unusual α-methylene oxidation of N-substituted tetrahydroquinoline to lactams using the cyclometalated Ru(II)-complex as a catalyst. Cyclic-α-methylene C–H bonds are selectively oxidized under the reaction conditions even in the presence of α-methyl or reactive α-methylene C–H bonds. This methodology is also useful in the late-stage functionalization of pharmaceuticals. Mechanistic