Visible-light-induced, iridium catalyzed, para-selective C–H difluoroalkylation of anilinederivatives under mild reaction conditions is reported. Various substrates and bioactive compounds, such as precursors of vorinostat and chlorpropham, were all well tolerated. This protocol features a wide substrate scope, high regioselectivity, low catalyst usage, and operational simplicity.
A process for the preparation of substituted oxazolidine-2,4-diones by treating a corresponding carbamate with a 2-hydroxycarboxylic acid ester at from 80.degree. to 250.degree. C.