Michael and Acetal Aldol-Type Reactions on Solid-Phase. Use of the Swollen- Resin Magic Angle Spinning (SR-MAS) NMR Technique for the Development of the Solid-Phase Organic Reactions

Michael reactions of α,β-unsaturated ketones and aldol-type reactions of acetals with polymer- supported silyl enol ethers (PSSEEs) proceeded smoothly using a rare earth triflate as a catalyst. The Swollen-Resin Magic Angle Spinning (SR-MAS) NMR technique has been successfully used for the development of the reactions.