The First Catalytic Mannich‐Type Reaction of N‐Alkoxycarbonylamino Sulfones with Silyl Enolates

Bismuth triflate was found to be an efficient catalyst in the Mannich‐type reaction of silyl enolates with N‐alkoxycarbonylamino sulfones. The reaction proceeded smoothly with a low catalyst loading of bismuth triflate (0.5–1.0 mol %) to afford the corresponding protected β‐aminocarbonyl compound in very good yields (up to 96 %).