The intermolecular N-H insertion reaction of methyl α-diazo α-arylacetate with acetamide has been investigated using transition-metal complexes as catalysts. The Cu(II) complex Cu(hfacac)2 (hfacac represents hexafluoroacetylacetonate) has proven to be the most active catalyst to yield methyl N-acetyl-2-phenylglycin in good isolated yield (73–80%) with 3 mmol% of catalyst loading in reflux toluene.
Aqueous Benzylic C–H Trifluoromethylation for Late-Stage Functionalization
作者:Shuo Guo、Deyaa I. AbuSalim、Silas P. Cook
DOI:10.1021/jacs.8b08547
日期:2018.10.3
The installation of trifluoromethylgroups has become an essential step across a number of industries such as agrochemicals, drug discovery, and materials. Consequently, the rapid introduction of this critical functional group in a predictable fashion would benefit current practitioners in those fields. This communication describes a mild trifluoromethylation of benzylic C-H bonds with high selectivity