Facile Synthesis of 1,2‐Dicarbonyls From Alkynes Enabling by Oxone/PhSeSePh Under Mild Conditions

A robust, mild, and straightforward strategy for the efficient synthesis of structurally valuable 1,2‐dicarbonyls from alkynes under the cooperative work of Oxone/diselenide was reported. This method proceeded with high efficiency under mild conditions, accommodating various symmetric and unsymmetric alkynes, which yielded the corresponding 1,2‐diketones in 40%–96% yields. The control experiments indicated that both Oxone and diphenyl diselenide were crucial to this transformation. Furthermore, the preliminary mechanistic investigations revealed that a radical pathway was possibly involved in this reaction.