A Combination of Copper(0) Powder and Selectfluor Enables Generation of Cationic Copper Species for Mild 1,2-Dicarbonylation of Alkynes
摘要:
A combination of copper powder and Selectfluor permits the generation of cationic copper species that efficiently catalyze 1,2-dicarbonylation of alkynes under mild conditions with water and dioxygen as inexpensive and environmentally benign sources of oxygen.
A gold(I)-catalyzed oxidative diketonization of alkynes by water in the presence of Selectfluor has been achieved. The application of the present protocol for the one-pot synthesis of quinoxaline derivatives from alkynes and o-phenylenediamines has also been successful.