Dicumyl Peroxide (DCP)
A copper-catalyzed radical methylation/sp3 C-H amination/oxidation reaction provides quinazolinone via a cascade reaction, in which dicumyl peroxide acts not only as an oxidant but also as an efficient methyl source.
Y. Bao, Y. Yan, K. Xu, J. Su, Z. Zha, Z. Wang, J. Org. Chem., 2015, 80, 4736-4742.
A rhodium-catalyzed carbonylative annulation methodology with nonactivated aromatic sulfides and terminal alkynes as the substrates provides thiochromenones effectively via [3 + 2+1]-type annulation.
F. Zhu, X.-F. Wu, J. Org. Chem., 2018, 83, 13612-13617.