achieved in a highly selective fashion. This study represents the first example of selective activation of unactivated alkanes by bromine radicals in a catalytic and metal-free manner. Good reactivity was achieved by using a sealed microtubing reactor or by adding a proper amount of water. This highly selective C(sp3)–H functionalization protocol offers a new paradigm for the direct synthesis of valuable compounds
Photocatalytic C–H Trifluoromethylthiolation by the Decatungstate Anion
作者:Tobias E. Schirmer、Alessa B. Rolka、Tobias A. Karl、Ferdinand Holzhausen、Burkhard König
DOI:10.1021/acs.orglett.1c01870
日期:2021.8.6
A broadly applicable method for the trifluoromethylthiolation of methylene C(sp3)–H, methine C(sp3)–H, α-oxygen C(sp3)–H, and formyl C(sp2)–H bonds is presented using the decatungstate anion as the sole catalyst. By adjusting the substrate ratio and reaction concentration, this method was applied to 40 examples in good regioselectivities, including the derivatization of natural products. Furthermore