Radical Alkynylations with EthynylBenziodoXolones: from Photocatalysis to Direct Excitation

Ethynylbenziodoxolones (EBXs) have recently emerged as potent reagents for the alkynylation of radicals. Their combination with photocatalysis allows synthesis valuable alkynes at room temperature. Herein, we discuss two photomediated strategies internal alkynes. The first transformation is a 1,2-oxyalkynylation N- and O-alkenes using 4ClCzIPN photocatalyst. second strategy makes use EBXs strong photooxidants allowing oxidation variety substrates no need