Metal-Free Functionalization of N,N-Dialkylanilines via Temporary Oxidation to N,N-Dialkylaniline N-Oxides and Group Transfer
摘要:
A simple set of protocols for the controlled elaboration of anilines is reported allowing access to a diverse array of aminophenols, aminoarylsulfonates, alkylated anilines, and aminoanilines in 29-95% yield in a single laboratory operation from easily isolable, bench-stable N,N-dialkylaniline N-oxides. The introduction of new C-O, C-C, and C-N bonds on the aromatic ring is made possible by a temporary increase in oxidation level and excision of a weak N-O bond.
A Mild Synthesis of Aryl Triflates Enabling the Late‐Stage Modification of Drug Analogs and Complex Peptides
作者:Stefan Schiesser、Joanna Ceklarz、Johanna Kollback、Lucie Borowiec、Julia Fagerlund、Shakiba Vahdat、Marika Lindhagen、Okky Dwichandra Putra
DOI:10.1002/chem.202301421
日期:2023.7.26
triflates using a newly discovered reagent in presence of a fluoride source. The reactions are generally complete within a few minutes at room temperature. The mild conditions allow the late-stage O-triflation of complex peptides bearing challenging side chains like arginine and histidine. We show that aryl triflates can be an interesting moiety for medicinal chemistry.