Commercial Pd/C-Catalyzed <i>N</i>-Methylation of Nitroarenes and Amines Using Methanol as Both C1 and H<sub>2</sub> Source
作者:Vishakha Goyal、Jyoti Gahtori、Anand Narani、Piyush Gupta、Ankur Bordoloi、Kishore Natte
DOI:10.1021/acs.joc.9b02141
日期:2019.12.6
Herein, we report commercially available carbon-supported-palladium (Pd/C)-catalyzed N-methylation of nitroarenes and amines using MeOH as both a C1 and a H-2 source. This transformation proceeds with high atom-economy and in an environmentally friendly way via borrowing hydrogen mechanism. A total of >30 structurally diverse N-methylamines, including bioactive compounds, were selectively synthesized with isolated yields of up to 95%. Furthermore, selective N-methylation and deuteration of nimesulide, a nonsteroidal anti-inflammatory drug, were realized through the late-stage functionalization.