Rapid Microwave-Assisted Syntheses of Derivatives of HIV-1 Entry Inhibitors
作者:David A. Vicic、Asim Kumar Debnath、Chris McFarland
DOI:10.1055/s-2006-926339
日期:——
The direct amidation of esters with 4-amino-2,2,6,6-tetramethylpiperidine was achieved by computer-controlled microwave irradiation in toluene. The microwave protocol allowed the new amides to be prepared in three hours rather than the three days required by traditional thermal methods.
Copper/O2-Mediated Oxidative C–C Activation of Nitriles for Selective Acylation-Bromination of Anilines
作者:Wei-Yu Shi、Song-Lin Zhang
DOI:10.1021/acs.joc.4c00287
日期:2024.5.17
This study reports selective dual amino acylation and C–H bromination of aniline compounds enabled by Cu/O2 catalyst systems. This method involves crucial oxidation-induced C–CN bond cleavage of α-methylene nitriles to generate an acylcyanide intermediate that is facilely intercepted by anilines. After amino acylation, the Cu(II) precatalyst in combination with NBS generates Cu(III)–Br in situ that