Remote, Late-Stage Oxidation of Aliphatic C–H Bonds in Amide-Containing Molecules
作者:Takeshi Nanjo、Emilio C. de Lucca、M. Christina White
DOI:10.1021/jacs.7b07665
日期:2017.10.18
systematic study of the main features that makes remote oxidations of amides in peptide settings possible, we developed an imidate salt protecting strategy that employs methyl trifluoromethanesulfonate as a reversible alkylating agent. The imidate salt strategy enables, for the first time, remote, nondirected, site-selective C(sp3)-H oxidation with Fe(PDP) and Fe(CF3PDP) catalysis in the presence of a broad
Intramolecular Keto Lactam Condensation: A Convenient and Straightforward Approach to Bicyclic Vinylogous Lactams
作者:Pei-Qiang Huang、Ting Fan
DOI:10.1002/ejoc.201701060
日期:2017.11.24
lyl trifluoromethanesulfonate (TBDMSOTf), lactam activation with triflicanhydride (Tf2O), and a tandem cyclocondensation reaction. The reaction can be run in a one-pot manner or in a two-step fashion, both under mild conditions. The yields for the one-pot version were 52–80 %. In some cases, the two-step version gave higher overall yields (44–85 %) than the one-pot version.