Dual Organocatalytic Ion‐Pair Assemblies: A Highly Efficient Approach for the Enantioselective Oxa‐Michael–Mannich Reaction of Salicylic Aldehydes with Cyclohexenones
State Key Laboratory Breeding Base of Green Chemistry‐Synthesis Technology, Zhejiang University of Technology, Hangzhou (China), Fax: (+86)?571‐8832‐0066