A Facile Route to γ-Nitro Imidates via Four-Component Reaction of Alkynes with Sulfonyl Azides, Alcohols, and Nitroolefins

gamma-Nitro imidates were synthesized via a copper-catalyzed four-component cascade reaction of sulfonyl azides, alkynes, alcohols, and nitroolefins. This one-step procedure is general and efficient, and the reaction condition is mild.